Brown Dog Gadgets

$22.95

Overview Build your own solar powered gadget charger in minutes with this simple soldering kit! Centered around 2 rechargeable AA batteries this kit is a great solar powered activity to learn about soldering, solar power, and engineering. Plug in your favorite USB device and when you've depleted your battery power stick this charger in the sun to recharge You'll need some simple soldering skills to build this kit. Overall there are 5 solder points with most of them being through hole to a circuit board. Build time is is between 20-45 minutes and will require a soldering iron, screw driver, and hot glue gun, though it isn't a bad idea to also have a wire cutter/ stripper around. Rechargeable AA batteries are a very safe and inexpensive source energy storage, but they're not really great at recharging devices. Typically a full charge on the included 2 AA batteries will only charge up a modern phone 5-10%, with some phones using MORE power than the charger can output (meaning you won't see any percent change). If you're looking to build yourself a more powerful version our Solar USB 3.0 includes a lithium battery, we just don't recommend this for younger Makers. The project does NOT come with an Altoids tin or enclosure. If you go this route please keep in mind that the tin edges are VERY sharp and can easily cut a finger open. It's also quite conductive so you'll need to properly insulate the tin with electrical tape or hot glue. We recommend using a $1 Store plastic food container instead. Directions, Lesson Plans, and Videos Follow our step by step directions or video found in our online Project Database . Directions available in English and Spanish. This kit is often used in classrooms, camps, and after school programs to teach solar energy. If you have questions about running a large group activity with this kit feel free to email or call us. We have a lot of helpful tips and tricks on appropriate classroom management when soldering.

$3.95

Overview This is a simple lithium battery charge controller for use with 3.7V lithium ion and lithium polymer batteries. The PCB is marked for easy soldering. To charge an attached battery either plug a mini USB cable unto the board or use the IN + and IN - solder points with a voltage between 4.5-5.5V DC. The board has a maximum current rating of 1A and uses linear charging. The board uses two small LEDs as indicators, with RED during charging and BLUE when the battery is full. Warning : Lithium batteries are in nearly every gadget we use and are, in general, safe. However they can start a fire or become deadly if handled improperly.

$3.95

Overview This is a simple lithium battery charge controller for use with 3.7V lithium ion and lithium polymer batteries. The PCB is marked for easy soldering, with power in, power out, and battery in solder points. To charge an attached battery either plug a micro USB cable unto the board or use the IN + and IN - solder points with a voltage between 4.5-5.5V DC. The board has a maximum current rating of 1A and uses linear charging. The board uses two small LEDs as indicators, with RED during charging and BLUE when the battery is full. Warning : Lithium batteries are in nearly every gadget we use and are, in general, safe. However they can start a fire or become deadly if handled improperly.

$4.95

Overview A small solar cell that outputs 6V at 80mA. The cell m easures only 73mm x 53mm and is encased in a hard epoxy. Two copper pads on the backside allows for easy soldering. We typically use this cell with our Solar USB Kits where they end up charging 2 or 3 AA batteries.

$4.95

Overview Create your own zippy bot in minutes with this fun filled electronics kit! Bristlebots are a fun way to learn about basic engineering, motor, circuits, and principals of balance. Creating a bot is simple, just attach the parts to the tooth brush head and watch them go. Change they way they move and behave by adjusting the balance and pipe cleaners. Bristlebots are a great rainy day activity or a fun way to spice up a classroom activity. Each Bristlebot Kit includes all the parts you need to create your own bot. Building a bot takes 5-10 minutes of time and their included battery lasts for up to 2 hours. Bristlebots are not intended to be taken apart and reused, however some parts can be individually reused. We recommend Bristlebots for anyone ages 10 and up due to the small parts and included coin cell batteries. Individual parts and components are also available for sale. Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Directions, Lesson Plans, and Videos Printable directions in English and Spanish can be found on our online Project Database , along with leveled Lesson Plans and Student Activity Sheets. If you have questions about implementing our Bristlebots in your classroom or after school program please contact us. We've been helping educators implement Bristlebots in their classrooms for years and have many helpful tips and tricks.

$2.95

Overview This small solar cell is encased in plastic and puts out 2V at 40mA. While not producing much overall energy it is plenty to activate one of our vibrating motors, a couple of LEDs, or even recharge a AA or AAA battery. We use it with our Solar Cockroach Kits and our Solar Bug Kits. Specifications: Dimensions: 60mm x 30mm Soldering tabs located on back of cell

$1.95

Overview Standard NiMH 1.2V rechargeable NiMh AAA batteries with a capacity of 1,800mAh. Great for all sorts of projects and work quite well with simple solar based systems. As a reminder rechargeable AA and AAA batteries have a lower voltage compared to regular batteries which have a voltage of 1.5V. If you plan on using several batteries in a series circuit make sure you account for the 0.3V per battery lower voltage.

$1.95

Overview The 1N914 diode is something every solar project needs. It blocks the flow of power in one direction, which is how you keep power from flowing back into the solar cell at night. This diode is great, but should only be used in solar projects where the solar cell is at or below about 200mA. The diode only allows up to 200mA, so the extra energy will be wasted if you have a massive cell. Contains 10 Diodes in this pack.

$2.95

Overview This small vibrating motor is used in our Bristlebot Kits . This handy little motor puts out quite a bit of vibration power in a very small package. We've special ordered this motor to have extra long wire leads as well as extra exposed wire on the ends. While it works just fine in paper crafts, we do recommend our self sticking disc motor for that task. The motor works well off an AG13 or a CR2032 battery power source. Specifications Diameter: 6.0mm (0.2 in) Length: 14.0mm (0.6 in) Length ( including wires): 45mm (1.7 in) Operating voltage: 1.3 to 3.0 Volts Stripped wire leads Extra exposed wire Use With CR2032 Battery AG13/LR44 Battery 2V 40mA Solar Cell Maker Tape

$2.95

Overview A five pack of CR2032 batteries. Handy for vibrating motors, paper crafts, LEDs, and for use with Maker Tape . These little batteries output 3V of power which will easily light up any color LED. For best use don't power more than 3 LEDs off one battery. Warning : Coin cell batteries can be deadly if swallowed by kids or pets. Keep out of the hands and mouths of all small mammals.

$4.95

Overview This kit is available by Special Request Only and NOT available to order directly off our website. This version has been replaced by our Solar Bug, Solar Critter, and Solar Sea Creature Kits . They're the newer and much improved version of this project intended for younger audiences. The 'Roach' version is only appropriate for older students, 8th Grade and up, due to the use of Hot Glue. If you REALLY need this version please reach out to us about it. Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Directions, eBooks, Lesson Plans, and Videos Directions in both English and Spanish can be found on our online Project Database .

$0.95

Overview A simple blue toggle switch with two solder points. Works wonderfully for all kinds of DIY projects where a tactical switch is needed. The switch comes with screws for easy panel mounting. When soldering to the switch be careful not to add too much heat, as the body of the switch is made of plastic and can melt. If possible thread wire into the small holes on the legs before soldering or use a well positioned helping hand tool.

$2.95

Overview Standard NiMH 1.2V rechargeable NiMh AA batteries with a capacity of 3,000mAh. Great for all sorts of projects and work quite well with simple solar based systems. As a reminder rechargeable AA and AAA batteries have a lower voltage compared to regular batteries which have a voltage of 1.5V. If you plan on using several batteries in a series circuit make sure you account for the 0.3V per battery lower voltage.

$5.95

A handy DC to USB assembled circuit that we use to make our Solar USB Chargers . You can use it too. Takes DC power from as low as 2V and bumps it up to the 5V USB needs at around 600mA (0.6A) of current. Due to popular request, we've now added soldered 6 inch wires to the USB circuit. This should entirely remove the need for soldering in many projects. This circuit works fine with most simple USB devices, however many modern phones or tablets require a much higher sustained amperage than what this circuit can output. For best results use a lithium or alkaline based battery source.

$2.95

Overview Holds three AA Batteries in series. Features six inch wire leads. When using 3 regular AAs this will output 4.5V of power, when using 3 rechargeable AAs you'll only get 3.6V. This holder is ideal for using with wearable projects or projects where you need to power an Arduino.

$35.95

Overview Build your own solar powered gadget charger in minutes with this simple soldering kit! Centered around 3 rechargeable AA batteries this kit is a great solar powered activity to learn about soldering, solar power, and engineering. Plug in your favorite USB device and when you've depleted your battery power stick this charger in the sun to recharge You'll need some simple soldering skills to build this kit. Overall there are 7 solder points with most of them being through hole to a circuit board. Build time is is between 20-45 minutes and will require a soldering iron, screw driver, and hot glue gun, though it isn't a bad idea to also have a wire cutter/ stripper around. Rechargeable AA batteries are a very safe and inexpensive source energy storage, but they're not really great at recharging devices. Typically a full charge on the included 3 AA batteries will only charge up a modern phone 5-10%, with some phones using MORE power than the charger can output (meaning you won't see any percent change). If you're looking to build yourself a more powerful version our Solar USB 3.0 includes a lithium battery, we just don't recommend this for younger Makers. Directions, Lesson Plans, and Videos Follow our step by step directions or video found in our online Project Database . Directions available in English and Spanish. This kit is often used in classrooms, camps, and after school programs to teach solar energy. If you have questions about running a large group activity with this kit feel free to email or call us. We have a lot of helpful tips and tricks on appropriate classroom management when soldering. For large group orders we can offer free custom laser engraving. Just ask!

$17.95

Overview This version is no longer being sold. You can find the much improved updated version at this link .

$10.95

These large LEDs are great for any project! Each LED also has a built in resistor designed to work with any 3V power supply, such as a CR2032 Battery or a 2 AA holder. This means that these LEDs will last longer, be less likely to burn out, and use less power than a regular LED! Add some flair to your project with our Color Cycling LEDs. Just add power and watch it slowly change all sorts of colors; no extra parts or supplies needed. (Resistors inside range from 120 ohm to 220 ohm depending on the LED color.)

$48.95

Overview The Solar Science Station is a non-soldering solar data collector and tool that you build yourself. The Solar Science Station is designed to record solar data in the classroom or for a science faire project. Use the included digital volt meter and adjustable solar panel to record your local solar energy. Use the ample 6V 200mA solar panel to power external devices through the USB port or banana plugs. It's a great way to power other science projects or create an interactive solar demo. The kit is 100% reusable which makes it perfect for any science classroom. Just use a screw driver (not included) to assemble or disassemble the project. An external 3AA rechargeable battery pack is available as an add-on (batteries included) to store power collected by the solar panel and turn the Science Station into a portable USB power source! When using it as part of a classroom activity be sure to check out our free lesson plans and activities, or download our free Solar Science Station eBook. In a classroom environment it's possible to connect several Science Stations together to generate even more energy or model a solar farm. Parts Included 6V 200mA Solar Panel Terminal Block LED Voltmeter USB Circuit Banana Sockets Laser Cut Wood Enclosure w/ Screws Optional Battery Pack You will also need a Phillips head screwdriver and small slotted (flat head) screwdriver to build this project. It's also handy to have a wire stripper available in case you need it. Directions, Lesson Plans, and Videos All our resources can be found in our online project directory . The Solar Science Station comes with six days worth of Lesson Plans and Activity Guides . Feel free to read them over before buying the kit. If you're looking to use the Solar Science Station as a Science Faire Project we highly recommend you read this article we wrote about how to use the kit for that purpose. We lay out several options for how to run experiments and activities in order to collect and later present your data.

$131.95

Overview Please note that this kit has been discontinued. Create your own computer controlled Solar Tracker in under an hour with this specialized solar kit! This kit includes everything you need to complete the project, from the wooden parts and screws to the custom Arduino shield and micro servos. The entire project takes about an hour to build. The only tools you'll need to complete this project are some screw drivers and a computer to upload the final code (included). When finished the project can be power by any USB power source, such as a power bank or computer USB port. Data collection is easy using the 6V 200mA solar panel and the LED volt meter. This allows the tracker to easily be used as part of a science faire project or as a classroom demo. Since the kit is only held together by screws it can easily be disassembled for multiple uses in a classroom setting. To make the build easier we've designed out own custom Arduino Shield and PCB sensor holder. Code is included in our online directions and can be uploaded via the free Arduino IDE software. Curious creators can also modify or upload their own custom code through the same interface. If you don't wish to purchase the full kit you can chose to buy just the electronics or just the wooden pieces and screws. The Electronics Package comes with our custom shield, Arduino, servos, solar panel and other various electronics components. We do recommend buying the full kit as all our parts are designed to work together and we can not guarantee that other components will provide the same build experience. Directions, Lesson Plans, and Videos Detailed instructions as well as a build guide video can be found in our Project Database . If your solar tracker is labeled V3 on the wood, use that guide as we have made some minor modifications. Otherwise you most likely have V2. If you're interested in building your own from tracker 100% from scratch we make all our laser cut, PCBs, and code available as Open Source. This information can all be found on our GitHub Repo . The only downside is that we can't provide any technical support.

$23.95

Overview Why mess with wires when you can just use conductive tape! Choose from our personal sized Standard Kit or our giant Classroom Set to create all kinds of electronics projects out of paper! Designed from the ground up to be engaging for kids of all ages, our kit fits right at home at a kitchen table, workshop, or classroom. Create your own projects from scratch or use one of our many free Paper Circuits project guides or our themed eBooks . Teach the basics of electronics by using our online lessons and simple curriculum, complete with student and teacher documentation. Take things one step further by using our amazing Maker Tape to build projects on fabric! Create simple wearables just by sticking Maker Tape onto a shirt, hat, or felt fabric sheet. Avoid the mess of conductive sewing and just stick your parts on. Maker Tape's nylon fibers combined with conductive materials result in an amazingly strong and highly conductive tape that won't leave a mess on your next project. Maker Tape turns any surface into your next circuitry project. Use it on walls or windows, cardboard or fabric, design your own Paper Craft creation or even apply it to building bricks for use with Crazy Circuits. Unlike other conductive tape options Maker Tape is specially designed to be Z Axis Conductive for much easier project creation. Just overlap two pieces of Maker Tape to create a solid electrical connection. Just tape down the component for a simple connection. No mess, hassle, or special tools needed. Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Standard Kit vs Classroom Set The Standard Kit is intended as an individual or small group activity kit, with enough parts for at least 10 projects. The Classroom Set is intended for large groups and includes enough parts for at least 40 projects. The kits include the same variety of components, with the Classroom Set containing four times as many components. The Standard Kit Includes: Maker Tape 1/4th Inch Conductive Tape Roll 5M (16 Feet) CR2032 Batteries (x10) Jumbo LEDs (x30) - Five Colors including Color Changing Binder Clips (x10) The Classroom Set Includes: Maker Tape 1/4th Inch Conductive Nylon Tape Roll 2 x 20M (130 Feet total) CR2032 Batteries (x25) Jumbo LEDs (x120) - Five Colors including Color Changing Binder Clips (x40) Directions, eBooks, Lesson Plans, and Videos A wide variety of paper craft templates and designs can be found on our online Project Database or through one of our themed eBooks. New users will find our Getting Started With Paper Circuits eBook quite helpful in learning the basics. Educators who want to use Paper Circuits to teach the fundamentals of electronics can use our Paper Circuits eBook as a workbook to teach basic lessons.

$9.95

Overview This robust solar cell puts out 6V at 200mA in an open circuit in a package that's only 110x85 mm in size (4.3x3.3 inches). The cell is encased in a hard epoxy and has many solder points o the backside.

$2.95

Overview A small vibrating motor is used in our Solar Cockroach Kits , Origami Circuits Kits , and our new Solar Bug Kit . Great for projects that need an easily secured motor. This motor has a self-adhesive backing which allows it to be attached to smooth surfaces. We've special ordered this motor to have extra long 6cm wire leads as well as increased the exposed wire on the ends. This allows the motor to be more easily used in paper craft projects and makes it slightly easier to solder with. Ideally you'd want to use a 2-3V power supply with the motor but it'll trigger at voltages as low as 1.3V. Specifications Diameter: 12mm (0.5 in) Length (including wires): 72mm (2.8 in) Height: 4.2mm (0.2 in) Operating voltage: 1.3 to 3 Volts 6cm length wires Extra exposed wire Use With CR2032 Battery AG13/LR44 Battery 2V 40mA Solar Cell Maker Tape

$1.95

Overview A rather standard 10 pack of AG13/ LR44 sized coin cell batteries. These batteries output 1.5V of power and work quite well with all the vibrating motors we sell on our website. These will not work with LEDs, and you should instead use CR2032 Batteries. Warning : Coin cell batteries can be deadly if swallowed by children or pets. Keep out of the hands and mouths of all small mammals.

$2.95

Overview A standard sized momentary pushbutton designed to work in a building brick or conductive sewing based environment. Press the button to add power to a circuit, release to cut off power. Like all of our Crazy Circuits components this pushbutton is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 1x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this button to other components.

$2.95

Overview A jumbo sized momentary pushbutton designed to work in a building brick or conductive sewing based environment. Press the button to add power to a circuit, release to cut off power. Like all of our Crazy Circuits components this pushbutton is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 2x4 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this button to other components.

$3.95

Overview A two position slide switch designed to work in a building brick or conductive sewing based environment. Move the switch back and forth to change the direction that power flows. Like all of our Crazy Circuits components this switch is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 2x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this switch to other components.

$3.95

Overview NOTE : As of June 2026 we have phased out this part in our Crazy Circuits Kits in favor of our new Power Chip, which adapts a AAA battery pack and adds short circuit protection. If you have a specific need for the older CR2032 holder please contact us and we might be able to provide some to you. A CR2032 battery holder designed to work in a brick or conductive sewing based environment. Like all of our Crazy Circuits components this battery holder is soldered to a small circuit board with large building brick sized holes in it. The overall PCB size is the same as a 3x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this battery holder to other components. This LED is designed to work with a standard CR2032 battery providing 3V of power. Use it to power LEDs, switches, and small motors.

$7.95

Overview A pre programmed micro controller designed to work in a brick or conductive sewing based environment. Use it to add blinking and fading effects to your project without any programing. Like all of our Crazy Circuits components this controller is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 3x4 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this controller to other components. This controller is designed to work with 3V of power such as found coming out of a CR2032 battery or a 2 AA/ 2 AAA battery holder. Once Power and Ground are connected you can wire an LED to any of the numbered pins. Pins 1 & 2 slowly fade. Pin 3 blinks at a fast rate, while Pins 4 and 5 alternate blinking. You can wire up LEDs, or multpul LEDs, to each pin. Just keep in mind that a CR2032 battery will only power 2-3 LEDs and if you're powering more you'll need to use a more power battery source.

$2.95

Overview A color cycling jumbo 10mm LED Crazy Circuits chip that can be used in any building brick compatible environment or sewn using conductive thread. Just add power and watch this LED slowly change from color to color. Like all of our Crazy Circuits components this LED is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 2x2 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this LED to other components. This LED is designed to work in a 3V system and has a built in resistor in its head for extra protection. Power it using a CR2032 Battery, a 2 AA or 2 AA holder, or power from an Arduino based board such as our Robotics or Invention Boards.

$2.95

Overview A standard sized momentary pushbutton with a tall head designed to work in a building brick or conductive sewing based environment. Press the button to add power to a circuit, release to cut off power. Like all of our Crazy Circuits components this pushbutton is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 1x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this button to other components.

$2.95

Overview This surface mount RGB LED works well in any building brick or Conductive Sewing based environment. Its low profile surface mount components are quite handy when building complicated projects. Like all of our Crazy Circuits components this LED is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 2x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this LED to other components. This LED is designed to work with Arduino based board such as our Robotics or Invention Boards. Connect it to digital pins and then program your micro controller to change the colors.

$6.95

Overview A piezoelectric speaker designed to work in a building brick or conductive sewing based environment. Connect this speaker to a micro controller to change the sounds coming out of it. Like all of our Crazy Circuits components this speaker is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 2x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this speaker to other components. Use it with our Robotics or Bit Board to add sound effects to your next project.

$3.95

Overview A two port screw terminal designed to work in a building brick or conductive sewing based environment. Screw in standard components to connect them to the Crazy Circuits system. Like all of our Crazy Circuits components this terminal is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 2x2 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this terminal to other components. Typically this part is used to connect a 2 AA or 2 AAA battery holder for use in the Crazy Circuits system. However any 2 pin or 2 wire component can be plugged in, such as LEDs, motors, or speakers.

$0.95

Overview A three pin female header designed to work in a brick or conductive sewing based environment. Use this component to bring 2 and 3 pin standard comments into the Crazy Circuits system Like all of our Crazy Circuits components this female header is soldered to a small circuit board with large building brick sized holes in it. The overall PCB size is the same as a 2x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this female header to other components. This part is quite handy for wiring in resistors, capacitors, LEDs, diodes, and transistors into the Crazy Circuits system. Any 2 or 3 pin component will easily plug in.

$2.95

Overview A white jumbo 10mm LED Crazy Circuits chip that can be used in any building brick compatible environment or sewn using conductive thread. Like all of our Crazy Circuits components this LED is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 2x2 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this LED to other components. This LED is designed to work in a 3V system and has a built in resistor in its head for extra protection. Power it using a CR2032 Battery, a 2 AA or 2 AA holder, or power from our Robotics or Bit Boards

$48.95

Overview Add electronics to any brick based project with this fun STEM Kit! Crazy Circuits allows you to create complex circuits in a brick based environment! Using our specialized components and Maker Tape, users build their own circuit boards on top of the bricks! Design your own projects or add lights and effects to existing projects. The Starter Set comes with 10 jumbo LEDs for intense lighting. The included Bink/Fade Board lets you add blinking and fading effects to your project without the need for programming. Don't have bricks of your own? We include a 8x16 base plate with every kit to help you get started. Electronics newbies will find our included parts cards handy for understanding how components work together. Parts Included (Updated and Upgraded for 2022!) Slide Switch - Two Position Large Pushbutton Two Coin Cell Battery Holders Ten Jumbo 10mm LEDs (Red, blue, Green, White, and Color Changing) Maker Tape - ⅛ inch, 16 feet Five CR2032 Batteries Brick Baseplate (8x16 studs) Plastic Organizer Parts and Component Use Cards Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Directions, Lesson Plans, and Videos Find step by step project guides in our online Project Database or try some of our lessons in our Circuits 101 Curriculum. (The Starter Kit has enough components to do SOME of the Circuits 101 Curriculum, but not all of it.)

$966.95

Overview Updated for 2023 with new components and more parts! The Makerspace Set has everything you need to get an entire classroom creating projects with Crazy Circuits. Create projects both big and small with over 180 included parts. Create simple analogue circuits on building bricks using the included Jumbo 10mm LEDs, Jumbo Pushbuttons, and Slide Switches. Parts connect together using our amazing Maker Tape, which allows you to create projects in three dimensions! The included Blink/Fade Boards make adding simple lighting effects simple and require no programming. More advanced users can create interactive robotics projects in both the Arduino and Micro:Bit Environment. Connect our Crazy Circuits NeoPixel, Piezo Speaker, Potentiometer, and Brick Servos to the included Robotics Boards and Bit Boards for easy programming. Each Kit comes with both brick compatible Continuous Rotation Servos and 270 Degree Servos, allowing users to create rovers or robotic hands. Crafty users will find the included Conductive Thread handy for designing wearable electronics. All Crazy Circuits components are 100% Conductive Thread compatible. Add lights to a shirt or create an interactive pillow using only a needle and thread. Parts Included 60 x 10mm Jumbo LEDs 5 x NeoPixel LEDs 5 x RGB LEDs 50 x Coin Cell Batteries (CR2032) 10 x Coin Cell Battery Holders 5 x Jumbo Pushbutton Switch 5 x Mini Pushbutton Switches 5 x Two Position Slide Switch 10 x Screw Terminals 5 x Potentiometer 5 x Piezo Speaker 10 x Brick Base Plate 10 x Rolls of 1/8th Inch Maker Tape 4 x Brick Compatible Continuous Rotation Servo 4 x Brick Compatible 270 Degree Servo 1 x Bit Board 1 x Micro:Bit V2 5 x Robotics Board 5 x Blink Fade Board 6 x USB Cables 5 x 2AAA Battery Holders 2 x Bundles of Alligator Clips 2 x Plastic Organizers Instructional Cards Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Directions, eBooks, Lesson Plans, and Videos Find a wide range of guides and activities in our online Project Database . There you'll find information on how to set up your Robotics and Bit Boards as well as example projects and build guides. Classroom Teachers will find our Circuits 101, Programming 101, and Bit Board Curriculum helpful. (Please note that the Maker Space Set has components enough to do many of the projects found in our curriculum but doesn't have all the needed components.

$4.95

Overview Maker Tape's nylon fibers combined with conductive materials result in an amazingly strong and highly conductive tape that won't leave a mess on your next project. Maker Tape turns any surface into your next circuitry project. Use it on walls or windows, cardboard or fabric, design your own Paper Craft creation or even apply it to building bricks for use with Crazy Circuits. Unlike other conductive tape options Maker Tape is specially designed to be Z Axis Conductive for much easier project creation. Just overlap two pieces of Maker Tape to create a solid electrical connection. Just tape down the component for a simple connection. No mess, hassle, or special tools needed. Maker Tape works well for projects of all sizes. Use the 1/4th inch wide tape for paper to create light up paper crafts or use it on fabric to make short term wearable projects. Use the 1/8th inch wide tape on any compatible bricks along with our Crazy Circuits components to make circuit boards on plastic. Since Maker Tape has under 5 ohms per foot of resistance it can be used for both simple circuits as well as Arduino level projects. While we typically use our 1/4th inch wide tape with LEDs it also works quite well with our self sticking vibrating motors. Add these to a paper project to make your crafts move and shake. This listing is for one 5M (16.4 feet) of Maker Tape at a width of 3mm (1/8th inch). Tape comes with a plastic backing applied which makes it ideal for precutting. When using the tape either run the tape over the leg or exposed wire of your part, or place the part on top of the tape and apply a small second strip on top (sandwiching the two together). Directions, Lesson Plans, and Videos We're always adding projects and templates to our online Project Database . There you'll find greeting cards, simple paper crafts, LED projects, and motor based projects.

$8.95

Overview Maker Tape's nylon fibers combined with conductive materials result in an amazingly strong and highly conductive tape that won't leave a mess on your next project. Maker Tape turns any surface into your next circuitry project. Use it on walls or windows, cardboard or fabric, design your own Paper Craft creation or even apply it to building bricks for use with Crazy Circuits. Unlike other conductive tape options Maker Tape is specially designed to be Z Axis Conductive for much easier project creation. Just overlap two pieces of Maker Tape to create a solid electrical connection. Just tape down the component for a simple connection. No mess, hassle, or special tools needed. Maker Tape works well for projects of all sizes. Use the 1/4th inch wide tape for paper to create light up paper crafts or use it on fabric to make short term wearable projects. Use the 1/8th inch wide tape on any compatible building bricks along with our Crazy Circuits components to make circuit boards on plastic. Since Maker Tape has under 5 ohms per foot of resistance it can be used for both simple circuits as well as Arduino level projects. While we typically use our 1/4th inch wide tape with LEDs it also works quite well with our self sticking vibrating motors. Add these to a paper project to make your crafts move and shake. This listing is for one 20M (65 feet) of Maker Tape at a width of 6mm (1/4th inch). Tape comes with a plastic backing applied which makes it ideal for precutting. When using the tape either run the tape over the leg or exposed wire of your part, or place the part on top of the tape and apply a small second strip on top (sandwiching the two together). Directions, Lesson Plans, and Videos We're always adding projects and templates to our online Project Database . There you'll find greeting cards, simple paper crafts, LED projects, and motor based projects.

$2.95

Overview Spun from stainless steel fibers and nylon this conductive thread is the perfect solution to all your e-textile needs. This is great as it acts like thread, not like a wire! We like this particular thread for several reasons. First, it's thin and easy to sew with. Second, it's strong. Really strong. As in machine washable strong. Lastly, it only has a resistance of between 10-20 ohm per foot which makes it excellent for both large and small projects. Our pre-wound plastic bobbins each come with 16.4 feet (5 meters) of conductive thread. Most projects only need 1 to 3 feet of thread, such as our bracelet project, which uses 3 feet of thread each. Directions, Lesson Plans, and Videos Check out all our free conductive sewing projects, templates, videos and guides in our online Projects Database . If you have questions about implementing conductive sewing projects into your classroom or after school program just ask! We've done sewing projects with kids in 2nd grade all the way up through college, and have a few tips and tricks we can share.

$26.95

Overview These are the custom Arduino Servo Shield and LDR Sensor PCBs that we use in our Dual Axis Solar Tracker Kit . Whether you're building a single or dual axis tracker these custom PCBs can come in quite handy and eliminate a lot of wiring work. Our Servo Shield works with any standard Arduino that accepts shields, such as the popular Arduino Uno. Both PCBs come 100% soldered and ready to go. Code, laser cut files, and heaps of legacy files on our Solar Tracker projects can be found for free on our GitHub Repo .

$3.95

Overview A package of 5 alligator clips. RoHS lead free. 15 CM in length.

$36.95

Overview Create your own light up acrylic name badge in minutes with this simple STEAM activity. This simple activity teaches kids about optics and circuitry through an engaging art activity. You start with a blank piece of acrylic and etch your name or design on it using an (included) safety pin. Once finished add in an LED to make your project light up! This process is typically called "edge lit acrylic" and you can often find it being used for fancy Exit or shop display signs. The kits come with all the parts needed; acrylic blanks, safety pins, batteries, blue LEDs, and dot stickers. You will need to provide your own dry erase markers, or something similar, to complete this project. All kits are shipped with special blue LEDs. We've found that blue has the most vibrant appearance under all lighting conditions. This project is for ages 10 and up, and younger students will find this project very difficult to do on their own. The included coin cell batteries will last several days, slowly becoming dimmer. They can easily be replaced with a similar battery. Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Directions, Lesson Plans, and Videos Printable directions and a step by step video can be found on our online Project Database . If you have access to your own laser cutter or CNC router our design files are available for download . Use your machines to etch in your digital files and designs.

$114.95

Overview Teaching electronics can be a daunting task no matter what age or ability level you're working with. Theres choosing the various components, creating projects and activities, as well as the massive task of designing lesson plans and materials. The Circuits 101 Classroom line was designed as a complete classroom solution for teaching electronics. Not only do we give teachers a robust set of materials to use but we also provide the lesson plans, projects, activities, diagrams, and videos. Circuits 101 Sets comes with anywhere from 4 to 25 student boxes filled with electronics parts and supplies. Teachers can easily hand out the boxes and use our free curriculum and resources to quickly and easily run lessons. Every Set comes with a Teacher Box which includes a full set of supplies as well as additional batteries, tape, and informational cards. Each student box is a complete set of supplies intended for one group of students. (We recommend groups of no more than three students.) Our curriculum is always being updated and improved on. We've aligned our lessons to Common Core and NGSS standards for easy integration into any new or existing curriculum. In addition to lesson plans our curriculum also includes activity pages, assessments, diagrams, and videos for classroom use. As with all Crazy Circuits Kits, our Classroom Sets require no soldering. Parts are connected in a brick based building environment via our special Maker Tape conductive tape. The only additional tools you'll need are scissors. All Circuits 101 Sets Include One Teacher Box with extra materials (Not included in the Single Student Box) Free teacher approved curriculum, lesson plans, videos, and diagrams Maker Tape conductive tape Over 27 Parts including LEDs, buttons, switches, motor, transistor, and light sensor. Batteries included Durable plastic organizers Information cards for all our Crazy Circuits components. Directions, Lesson Plans, and Videos All resources are available for free in our online Project Database . Print off our lesson plans, evaluate our worksheets, and even try out our code.

$22.95

Overview Make simple wearable electronics with this fun filled STEAM and STEM kit. Making wearable electronics and soft circuitry projects has never been easier thanks to the Sewing Circuits Kits. Using Conductive Thread and our special Crazy Circuits components you can easily sew a circuit onto any fabric. Create a shirt, bracket, or pillow in minutes using only basic sewing skills. If you can sew a button on a shirt you can make your own wearable project. Each version of the kit comes with everything you need to start creating projects right out of the box. We include large needles, conductive thread, batteries, and our custom electronics parts. The Classroom Set also include multiple colors of felt fabric sheets. Follow the included directions, one of our step by step video guides, or create your own project from scratch. Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. We highly recommend that users have a basic background knowledge of how to sew, especially in a classroom environment. All projects are run on 3V of power which can not be felt when worn. For a much simpler wearable project use our Paper Circuits Kit and build our No Sew Bracelet project. Standard vs Classroom Set The Standard Kit is designed to be used by an individual or small group and includes enough materials for at least 2 projects, whereas the Classroom Set includes enough components for at least 25 projects. Standard Kit Includes: 5 Batteries 4 Jumbo Sewable LEDs (Red, Blue, Green, and White) 2 Sewable Battery Holders 2 Needles 2 Threading Tools 2 Button Snaps 1 Roll of Conductive Thread (16 feet) Classroom Set Includes: 25 Jumbo Sewable LEDs (Red, Blue, Green, White and Color Changing) 30 Batteries 25 Sewable Battery Holders 25 Needles 25 Threading Tools 25 Button Snaps 13 Sheets of Fabric 12 Bobbins of Conductive Thread (16 feet each) Directions, Lesson Plans, and Videos Print and and use one of our many sewable projects from our online Project Database . We're always adding new projects to our database so be sure to check back frequently. If you have questions about implementing sewing projects in your classroom or after school group feel free to contact us at any time. We've done sewing projects with students from 2nd grade up through college and have many useful tips and tricks for successful classroom management.

$23.95

Overview Bring your paper crafts to life with these engaging STEM kit! By adding LEDs and self-sticking motors we're able to create 3D paper craft projects that move, light up, and blink! This is a great way to teach art, design, engineering, and basic electronics. Create your own project from scratch or use one of many free projects and templates. These kits include everything you need to get started. Our self sticking vibrating motors are the prefect solution for any paper or cardboard based project. We include our huge 10mm Jumbo LEDs as well as naturally blinking red LEDs to help jazz up your project. Our nylon conductive Maker Tape is flexible, durable, and makes connecting components easy. Take things one step further and use Maker Tape on a shirt or fabric based project for a simple wearable project! If you're new to Paper Circuits, check out our free Introduction to Paper Circuits eBook. It'll walk you through the basics and help get you familiar with various building methods. Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Standard vs Classroom The Standard Kit is intended for a single user or small group activities and includes enough parts for at least five projects, whereas the Classroom Set includes enough components for at least 25 projects. The Standard Kit also includes one card stock robot template, users of the Classroom Set can print off the robot template from our Project Database. Standard Kit includes: 10 Red Blinking LEDs 5 Jumbo LEDs (Red, Blue, Green, White, and Color Changing) 5 Coin Cell Batteries 4 Self Sticking Vibrating Motors 1 Roll of Maker Tape (1/4th inch at 16 feet long) 1 Robot Template Classroom Set Includes: 30 pcs Shape Templates 50 Red Blinking LEDs 25 Jumbo LEDs (Color Changing) 25 Coin Cell Batteries 25 Self Sticking Vibrating Motors 2 Rolls of Maker Tape (1/4th inch by 65 feet, for 130 feet total) Note: The classroom set DOES NOT come with Robot Templates. Printable files are available for free. Directions, Lesson Plans, and Videos A wide variety of paper craft templates and designs can be found on our online Project Database . You'll find a wide range of designs, from simple greeting cards to holiday themed paper crafts. Print off the guides, watch the videos, and cut out the templates or create a fun project of your own!

$39.95

Overview By popular demand we've brought back the lithium battery version of our popular Solar USB Kits! Build your own solar powered gadget charger in minutes with this simple soldering kit! Centered around a 2200mAh Lithium Ion Battery this charger has the ability to charge up most cell phones with one full charge*. When you've depleted your battery power stick this charger in the sun or plug it into a USB power source to recharge. You'll need some simple soldering skills to build this kit. Overall there are 15 solder points with most of them being through hole to a circuit board. Build time is is between 20-45 minutes and will require a soldering iron and screw driver, though it isn't a bad idea to also have a wire cutter/ stripper around. Lithium batteries are a very common power source and can be found in nearly every smart gadget around your home. However they can also be quite dangerous if they're not handled properly. We do not recommend anyone under the age of 14 to build this project without direct adult supervision and appropriate safety gear. When in doubt, try one of our other Solar USB kits that use AA batteries. *Different phones, gadgets, and tablets have wildly different sized batteries inside which makes it difficult to judge just how much this charger will actually charge up your device. In general when it's 100% charged up it should charge up most cell phones between 75-100%. We don't recommend charging up tablets. Directions, Lesson Plans, and Videos Follow our step by step directions or video found in our online Project Database .

$2.95

Overview A blue jumbo 10mm LED Crazy Circuits chip that can be used in any brick compatible environment or sewn using conductive thread. Like all of our Crazy Circuits components this LED is soldered to a small circuit board with large building brick sized holes in it. The overall PCB size is the same as a 2x2 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this LED to other components. This LED is designed to work in a 3V system and has a built in resistor in its head for extra protection. Power it using a CR2032 Battery, a 2 AA or 2 AA holder, or power from an Arduino based board such as our Robotics or Invention Boards.

$2.95

Overview A green jumbo 10mm LED Crazy Circuits chip that can be used in any brick compatible environment or sewn using conductive thread. Like all of our Crazy Circuits components this LED is soldered to a small circuit board with large building brick sized holes in it. The overall PCB size is the same as a 2x2 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this LED to other components. This LED is designed to work in a 3V system and has a built in resistor in its head for extra protection. Power it using a CR2032 Battery, a 2 AA or 2 AA holder, or power from an Arduino based board such as our Robotics or Invention Boards.

$2.95

Overview A white jumbo 10mm LED Crazy Circuits chip that can be used in any building brick compatible environment or sewn using conductive thread. Like all of our Crazy Circuits components this LED is soldered to a small circuit board with large brick sized holes in it. The overall PCB size is the same as a 2x2 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this LED to other components. This LED is designed to work in a 3V system and has a built in resistor in its head for extra protection. Power it using a CR2032 Battery, a 2 AA or 2 AA holder, or power from our Robotics or Bit Boards.

$5.95

Add a servo to your next programable project with this mini 270 degree servo! This handy micro servo is designed to work in any building brick compatible environment. It features male and female brick studs as well as two axle mounting holes for easy building. Instead of a standard servo horn we instead have a standard axle mount. This means you can easily plug gears, wheels, and other axle mounting pieces directly to the servo! No need for an adapter! To connect this servo to a microcontroller, such as our Crazy Circuits Robotics Board , just use the standard three pin JST connector. When coding treat this servo like any other servo. This part is also known as a "GeekServo or 270 degree Geek Servo." It is NOT a standard motor. If you need a motor try this instead .

$5.95

Add a simple motor to your next project! This handy motor is designed to work in any building brick compatible environment. It features male and female brick studs as well as two axle mounting holes for easy building. Instead of a standard motor shaft we instead have a standard axle mount. This means you can easily plug gears, wheels, and other axle mounting pieces directly to the motor! No need for an adapter. Do NOT use this with a Bit Board, Micro:Bit, Robotics Board, Arduino, or Invention Board. You will destroy your microcontroller. (You can use it with the Bit Board's built in relay.) If you need a 'motor' for a robotics project use the 360 Degree servo , it'll meet your needs. To power this motor you'll need a power supply between 3-5V. We recommend using a 2AA or 2AAA battery pack for power. We DO NOT recommend using a CR2032 battery, as the motor will drain it within a few minutes. This part is also called a "GeekServo or 360 degree Geek Servo", through it is most certainly NOT a Servo. If you need a servo try out this instead .

$7.95

These clear LEDs are great for lots of different projects! These LEDs have a clear bulb on them which shines a bright light forward. This works well for projects that need a concentrated beam of light, such as our Straw Wars Cards or our LED Name Badges. However if you're doing regular paper craft projects you probably want to use our Jumbo Diffused LEDs that have a solid glow to them. Add some flair to your project with our Color Cycling LEDs. Just add power and watch it slowly change all sorts of colors; no extra parts or supplies needed. Power these LEDs from a 3V coin cell battery such as a CR2032. If you're using AA or AAA batteries it may be wise to throw in a 100 ohm resistor to prevent any burn outs. Please keep in mind that clear LEDs provide a beam of light outwards, like a flashlight. Most DIY, paper circuits, and wearable projects greatly benefit from a DIFFUSED LED bulb as they provide a pleasing 360 degree glow. You can find heaps of free Paper Circuits projects and guides in our Online Project Database.

$7.95

These Blinking Red LEDs are great for lots of different projects! These LEDs have a diffused bulb on them which shines in 360 degrees. While the bulb is made of a white plastic the internal diode shines red when power is applied. These LEDs naturally blink on and off without any need for additional programming. Power these LEDs from a 3V coin cell battery such as a CR2032. If you're using AA or AAA batteries it may be wise to throw in a 100 ohm resistor to prevent any burn outs. You can find heaps of free Paper Circuits projects and guides in our Online Project Database.

$5.95

Add a Servo to your next programable brick project with this mini Continuous Rotation 360 degree servo! This handy micro servo is designed to work in any building brick compatible environment. It features male and female brick studs as well as two axle mounting holes for easy building. Instead of a standard servo horn we instead have a standard axle mount. This means you can easily plug gears, wheels, and other axle mounting pieces directly to the servo! No need for an adapter! To connect this servo to a microcontroller, such as our Crazy Circuits Robotics Board , just use the standard three pin JST connector. When coding treat this servo like any other servo. This part is also known as a "GeekServo or 360 degree Geek Servo." It is NOT a standard motor. If you need a motor try this instead or if you're in need of a standard servo try this one .

$3.95

Overview A NeoPixel LED designed to work in a building brick or conductive sewing based environment. Connect it to your MicroController of choice and program away. Use this as you would any other NeoPixel LED component; daisy chain them together, create a matrix, control them with an Arduino or Micro:Bit board, or just use it as a high tech RGB LED. Like all of our Crazy Circuits components this NeoPixel LED is soldered to a small circuit board with large building brick sized holes in it. The overall PCB size is the same as a 2x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this button to other components.

$3.95

Overview A 10K Ohm Potentiometer designed to work in a building brick or conductive sewing based environment. Connect it to your MicroController of choice and program away. Use this as you would any other potentiometer in a project, be it analogue or digital. This potentiometer utilizes a large blue knob for easy finger adjusting. Like all of our Crazy Circuits components this potentiometer is soldered to a small circuit board with large building brick sized holes in it. The overall PCB size is the same as a 2x3 brick component. The part is designed to connect to other components in a brick based environment using our 1/8th inch wide Maker Tape. This part can also be used with Conductive Thread for use in Soft Circuits. Just sew through the large copper plated holes to make your circuit. For quick testing you can also use alligator clips to connect this button to other components.

$5.95

Overview Create a solar powered insect that moves with this fun filled STEM project! Learn about solar energy by creating a simple solar circuit in minutes using only conductive tape! Cut out your bug, decorate it, then add your solar cell and vibrating motor! All parts are connected with our special Maker Tape conductive tape, perfect for younger students. Once built these bugs will move around in the sun, and best of all they'll never run out of power! The Standard Kit comes with supplies for four full bugs, as well as 8 different card stock bug templates to choose from. Additional bug parts (legs and wings) can be found in our online guide for printing. Scissors and coloring supplies not included. The Classroom Set comes with supplies for 25 bugs, and includes 2 card stock bug designs for each student to choose from. Student activity pages, directions and lesson plans can be freely printed off our website at any time. Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Directions, eBooks, Lesson Plans, and Videos Printable directions and an eBook can be found on our online Project Database , and include leveled Lesson Plans and Student Activity Sheets. If you have questions about implementing our Solar Bugs in your classroom or after school program please contact us. We've been helping educators implement solar activities in their classrooms for years and have many helpful tips and tricks.

$2.95

This handy sensor works great with our Robotic Board, Invention Board, and Bit Board (or pretty much any programable board on the market). The Thumbstick features a full 360 degree of motion that outputs a signal via two bi-directional variable resistors. We enjoy using it to control servos and LEDs in a wide variety of projects. The Thumbstick also features a momentary pushbutton that can be activated by pushing down on the joystick. Information is output via 5 male pin headers on the circuit board. To connect it to our Robotics or Bit Board just use a standard female to female ribbon cable. When programming use standard potentiometer and button commands. For example code and projects please look around our Project Database .

$2.95

This handy sensor works great with our Robotic Board, Invention Board, and Bit Board (or pretty much any programable board on the market). Easily display information with this bright 7 Segment Display. Easily show up to four numbers and letters from your microcontroller of choice. We use this display to show values from our various temperature, distance, and light sensors. Perfect for anyone wanting to show a few numbers at an affordable price. Information is output via 4 male pin headers on the circuit board. To connect it to our Robotics or Bit Board just use a standard female to female ribbon cable. When programming use standard TM1637 libraries. For example code and projects please look around our Project Database .

$2.95

This handy sensor works great with our Robotic Board, Invention Board, and Bit Board (or pretty much any programable board on the market) to provide an accurate Temperature and Humidity readout. This DHT11 sensor module outputs a digital signal for measuring temperature and humidity. The sensor can measure humidity between 20%-95% with an accuracy of +-5%, and Temperature between 0-50 Degree C with an accuracy of between +-2 degrees. More or less it's a pretty useful and inexpensive sensor to add to your project while being powered directly from your microcontroller. Information is output via 3 male pin headers on the circuit board. To connect it to our Robotics or Bit Board just use the female to female ribbon cable included with the sensor. When programming use standard DHT11 Libraries. For example code and projects please look around our Project Database .

$3.95

This handy sensor works great with our Robotic Board, Invention Board, and Bit Board (or pretty much any programable board on the market). Easily and accurately detect objects and distance using a digital output. This ultrasonic sensor uses sound to detect objects as close as one inch away! We often use this sensor to activate a sensor or act as simple radar in our projects. The sensor can detect objects between 1-196 CM away. Programming is simple via Arduino or Micro:Bit. Information is output via 4 male pin headers on the circuit board. To connect it to our Robotics or Bit Board just use a standard female to female ribbon cable. When programming use standard HC-SR04 libraries. For example code and projects please look around our Project Database .

$4.95

Make your Paper Circuits projects interactive through the use of Transistors! This add-on allows you to create projects in our Advanced Paper Circuits guides. Inside you'll find 40 resistors (100 ohm, 1,000 ohm, 5,000 ohm, and 10,000 ohm), 10 Light Detecting Resistors, and 10 2N3904 Transistors. Use them to create light and dark detecting circuits, touch activated circuits, and even moisture detecting circuits!

$26.95

Overview Welcome to the world of programming and creation with Micro:Bit! The Bit Board greatly expands the capabilities of a standard Micro:Bit by giving users access to all the ports, expanding it from the standard 3 to a full 20 interface points. Instead of connecting 3 LEDs or buttons to a Micro:Bit you can connect up to 20! This means you can create bigger and better projects within the Micro:Bit environment. Connect standard servos and sensors to the Bit Board by simplify plugging them into the five Pin Header strips located on the backside. If you've never used these types of components before, don't worry! We have plenty of guides to show you how! External batteries can easily be connected through the dedicated power pins, the brick based connection holes, or the power screw terminal port. Every Bit Board Basic Kit comes with a 2 AAA battery holder with a special connection port to power the Bit Board. The Bit Board also features a built-in relay connected to Pin 16. This allows users to control 'dumb' components such as motors or mechanical buzzers, something the Micro:Bit can't do on its own. Version 1.5 of the Bit Board also features dedicated Pin Headers for Pins 19 and 20. This allows users to connect advanced SCL, SDA, and I2C accessories. Components such as Real Time Clocks and OLED Displays require access to these pins. Kit includes : Crazy Circuits Bit Board Right angled Micro USB Cable 16 foot 1/8th inch roll of Maker Tape 2AAA Battery Holder with JST Connector A Micro:Bit is not included with this kit, but can be added on in the options above. Warning : Kit includes small parts. These are a choking hazard. Not intended for children under the age of 10. Directions, Lesson Plans, and Guides Find step by step project guides in our online Project Database .

$96.95

Overview Automate and expand your creativity with this Micro:Bit focused STEM Kit. Our Bit Board Kit contains a wide range of parts and components to help you get started building all kinds of projects. We've included LEDs, a potentiometer, a servo, and even a programable NeoPixel LED! Follow one of our many step by step guides or create your own project from scratch! The Bit Board greatly expands the capabilities of a standard Micro:Bit by giving users access to all the ports, expanding it from the standard 3 to a full 20 interface points. Instead of connecting 3 LEDs or buttons to a Micro:Bit you can connect up to 20! This means you can create bigger and better projects within the Micro:Bit environment. Connect standard servos and sensors to the Bit Board by simplify plugging them into the five Pin Header strips located on the backside. If you've never used these types of components before, don't worry! We have plenty of guides to show you how! External batteries can easily be connected through the dedicated power pins, the brick based connection holes, or the power screw terminal port. Every Bit Board Basic Kit comes with a 2 AAA battery holder with a special connection port to power the Bit Board. The Bit Board also features a built-in relay connected to Pin 16. This allows users to control 'dumb' components such as motors or mechanical buzzers, something the Micro:Bit can't do on its own. Version 1.5 of the Bit Board also features dedicated Pin Headers for Pins 19 and 20. This allows users to connect advanced SCL, SDA, and I2C accessories. Components such as Real Time Clocks and OLED Displays require access to these pins. Kit includes: Crazy Circuits Bit Board Right angled Micro USB Cable 16 foot 1/8th inch roll of Maker Tape 2AAA Battery Holder with JST Connector 2 x Jumbo Pushbuttons 4 x Jumbo 10mm LEDs NeoPixel LED Potentiometer Piezo Speaker Slide Switch Brick Compatible Servo with Connector Brick Base Plate Alligator Clips Guide Cards Plastic Organizer A Micro:Bit is not included with this kit, but can be added on in the options above. Warning : Kit includes small parts. These are a choking hazard. Not intended for children under the age of 10. Directions, Lesson Plans, and Guides Find step by step project guides in our online Project Database .

$162.95

Overview Teaching Micro:Bit programming has never been easier thanks to the Bit Board Classroom Set. The Bit Board Classroom line was designed as a complete classroom solution for teaching electronics. Not only do we give teachers a robust set of materials to use but we also provide the lesson plans, projects, activities, diagrams, and videos. With our resources your students will be able to create all kinds of amazing projects such as interactive games, automated robots, and musical instruments! Take the guess work out of Micro:Bit lesson planing and creation. Our curriculum and lesson plans focus on teaching students the basics of Micro:Bit programing while also having them create more complicated code in order to learn HOW different parts interact. We take parts such as distance sensors and show how to manipulate servos, 7 segment displays, speakers, and LEDs to show readings. Our goal is to inspire and engage students, not just teach them how to write lines of code. Bit Board Classroom Sets comes with anywhere from 5 to 25 complete sets of materials filled with electronics parts and supplies. Teachers can easily hand out the boxes and use our free curriculum and resources to quickly and easily run lessons. Every Set comes with a Teacher Box which includes a full set of supplies as well as additional ribbon cables, tape, components, and informational cards. Each student box is a compete set of parts to be used by one group of students. (We recommend groups of no larger than three students, especially when working with a computer.) Our curriculum is always being updated and improved on. We've aligned our lessons to Common Core and NGSS standards for easy integration into any new or existing curriculum. In addition to lesson plans our curriculum also includes activity pages, assessments, diagrams, and videos for classroom use. As with all Crazy Circuits Kits, our Classroom Sets require no soldering. Parts are connected in a brick based building environment via our special Maker Tape conductive tape. The only additional tools you'll need are scissors and a computer to manipulate code. Bit Board Classroom Set Packs Include One Teacher Box with additional supplies Free teacher approved curriculum, lesson plans, videos, and diagrams Maker Tape brand conductive tape Free software Over 33 Parts in each box Distance Sensors, Light Sensors, 7 Segment Display, and Temperature Sensors Classroom ready packaging in heavy duty plastic containers Informational Cards with part explanations and example circuits Bit Board Classroom Sets do not come with a Micro:Bit. They can be added in for an additional cost. Warning : Kit includes small parts. These are a choking hazard. Not intended for children under the age of 10. Directions, Lesson Plans, and Videos Full access to all our resources can be found in our online Project Database . Evaluate our materials before you buy. All our resources are 100% Open Source and free to use.

$18.95

Just a single Micro:Bit V2 in an anti-static bag. Does NOT come with any cables, wire, addition components, or even a fancy box. Just the board in a bag. Here is a summary of all the features: 64 MHz Arm Cortex-M4 with FPU 512KB Flash 128KB RAM 5x5 Red LED Array Two Programmable Buttons, one touch sensitive logo MEMS microphone and LED indicator Onboard Light, Compass, Accelerometer, Temp Sensors and Speaker 2.4 Ghz Micro:bit Radio/BLE 5.0 Smart Antenna 25-pin Edge Connector 4 dedicated GPIO, PWM, I2C, SPI, and ext. power Three Digital/Analog Input/Output Rings Two Power Rings --- 3V and GND Dedicated I2C bus for peripherals MicroUSB Connector (5V) JST-PH Battery Connector ( Not JST-XH) (3V) Power/reset Button with Status LED 200 mA available for accessories Program with C++, MakeCode, Python, Scratch

$1.95

This handy little headphone jack is a simple way to connect standard 3.5mm headphone jacks to a Micro:Bit or Arduino. Just connect the two wires to your microcontroller of choice and plug-in a pair of headphones or a speaker. This is a great alternative to using a noisy piezo speaker, which may annoy other people around you, or to actively annoy other people by making the sounds louder with some big speakers! This is a mono jack, meaning you'll only get a single channel of sound coming from a single speaker in a stereo system. If you're using a microcontroller from our Crazy Circuits system you may find using a Screw Terminal Chip helpful. We added an option to get one with the headphone jack. When programming sounds just treat the headphone jack as if it was a piezo speaker. A guide on how to connect your Headphone Jack can be found in our documentation system at this link .

$1317.95

Overview Learn how to implement Paper Circuits lessons and curriculum in your classroom with this interactive virtual workshop! Paper Circuits is, in our opinion, the most engaging and simple way to teach electronics to children. However, finding the right materials and lessons can be a problem. In this hour long workshop we show you how to effectively engage your students by implementing paper circuits lessons, activities, and projects while understanding how to align them with local teaching standards. Teachers will not only watch live demonstrations of the materials but also use the included workshop kits to create example activities of their own. In our Paper Circuits Workshop you'll learn how to teach the following electrical concepts: Simple Circuits Conductivity - Create your own tester! Conductive Materials Buttons and Switches - How to make your own Simple Wearable Electronics Transistors Simple Sensors - Create a dark detecting circuit All Brown Dog workshops we provide both live instruction and materials. Choose from different pack sizes of materials that best meet the needs of your school or group. Our workshops are intended for adult learners who wish to instruct others, and are not suitable for children. The live workshop session will be recorded and posted to a private YouTube video so that educators can revisit it at later dates. Participants will leave the workshop with lesson documentation, printable learning materials, access to online materials, a copy of the workshop, and their own Paper Circuits supplies. Each Workshop Kit comes with materials worth over $40, and includes: Paper Circuits Kit Conductive Tape Holder Transistor and Resistor Set Self Sticking Vibrating Motor Paper Circuits Printed Workbook Custom workshop pack sizes available upon request. For more information, or to schedule a workshop, contact us!

$1317.95

Overview Learn how to implement Wearable Circuitry lessons and curriculum in your classroom with this interactive virtual workshop! Wearable technology is starting to take over our modern world. As educators we can use this trend to motivate our students in STEM lessons and activities. In this hour long workshop we show you how to effectively engage your students by implementing a variety of wearable lessons, activities, and projects while understanding how to align them with local teaching standards. Teachers will not only watch live demonstrations of the materials but also use the included workshop kits to create example activities of their own. In our Wearable Circuits Workshop you'll learn how to teach the following electrical concepts: Simple Circuits Wearable components and materials Conductive Sewing Projects and Lessons Conductive Tape Projects and Lessons Connecting Wearable Electronics to Standards Advanced Wearables using Arduino and Micro:Bit All Brown Dog workshops we provide both live instruction and materials. Choose from different pack sizes of materials that best meet the needs of your school or group. Our workshops are intended for adult learners who wish to instruct others, and are not suitable for children. The live workshop session will be recorded and posted to a private YouTube video so that educators can revisit it at later dates. Participants will leave the workshop with lesson documentation, printable learning materials, access to online materials, a copy of the workshop, and their own Wearable Circuits supplies. Each Wearable Workshop Kit comes with materials worth over $40, and includes: Conductive Sewing Kit Conductive Tape and LEDs Conductive Tape Holder Felt Fabric Wearable Circuits Printed Workbook Custom workshop pack sizes available upon request. For more information, or to schedule a workshop, contact us!

$202.95

Overview This is a standard Micro:bit V2 Club - 10 Pack. It comes in a retail box and includes enough supplies for 10 sets of Micro:bits. These can be used as stand alone projects or with our various Crazy Circuits Bit Board Kits and components. The kit includes the following items: 10 x Micro:bit V2 10 x USB Cable 10 x Battery Holder 20 x AAA batteries Also includes instructional booklet and stickers. Brown Dog Gadgets has a limited supply of these and is currently unable to give discounts.

$57.95

Custom Makerspace Kit and Micro:Bit Kit for St Catherine University Student. This is the 2023 version.

$30.95

Overview The Solar House is a non-soldering solar project that you build yourself! We designed the Solar House Kit as the perfect companion project for solar based learning. It requires no tools to assemble, is easy to wire up using our special conductive tape, and can be used again and again. Light up LEDs, power the motor, create switches, and assemble your house. The Solar House features a robust 6V solar panel that can light up the included LEDs or can power the motor + fan. Just stick the Solar House in moderate sunlight and watch the fun! In some situations it'll even work with artificial light, provided you have a strong enough light source. For extra fun, the motor + fan can be turned into a power source and used to light LEDs! 9 x Wooden Pieces 5 x Wire Strips 4 x Self Stick Rubber Feet 4 x 10mm Jumbo LEDs 1 x Motor + Fan 1 x 6V 80mA Solar Cell with Wires 1 x 5m Roll of Maker Tape Directions, Lesson Plans, and Videos All our resources can be found in our online project directory.

$23.95

Overview Why mess with thread and sewing when you can just use conductive tape. Choose from our personal sized Standard Kit or our giant Classroom Set to create all kinds of simple wearable projects in minutes! Adding circuity to wearable items is a fun and engaging way to introduce core science and engineering concepts within an arts context. Our new Wearable Circuits kits make this idea approachable for all learners regardless of dexterity issues, classroom time constraints and existing sewing skills. Use our conductive Maker Tape and raw circuit components to add a variety of LED accents to virtually any wearable item that you can stick a piece of tape to! For extra fun we've also included our special conductive hook and loop fasteners! These are a great way to create switches in wearable project or connect two pieces of fabric together. Unlike other conductive tape options Maker Tape is specially designed to be Z Axis Conductive for much easier project creation. Just overlap two pieces of Maker Tape to create a solid electrical connection. Just tape down the component for a simple connection. No mess, hassle, or special tools needed. Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Standard Kit vs Classroom Set The Standard Kit is intended as an individual or small group activity kit, with enough parts for at least 5 projects. The Classroom Set is intended for large groups and includes enough parts for at least 25 projects. The kits include the same variety of components, with the Classroom Set containing four times as many components. The Standard Kit Includes: Maker Tape 1/4th Inch Conductive Tape Roll 5M (16 Feet) CR2032 Batteries (x5) Jumbo LEDs (x15) - Five Colors including Color Changing Conductive Hook and Loop (2" strip) Standard Self Adhesive Hook and Loop Dots (x5) The Classroom Set Includes: Maker Tape 1/4th Inch Conductive Nylon Tape Roll 2 x 20M (130 Feet total) CR2032 Batteries (x25) Jumbo LEDs (x75) - 25 each of Red, Green, and Color Changing Conductive Hook and Loop (8") Standard Self Adhesive Hook and Loop Dots (x25) Directions, eBooks, Lesson Plans, and Videos A templates and designs can be found on our online Project Database or through one of our themed eBooks. New users will find our Getting Started with Wearables eBook quite helpful in learning the basics.

$158.95

Overview The Bit Board Rover combines Bricks and Micro:Bit into an amazing robotics platform. Learn how to create your own bots, code, and design your own projects! By popular request we've made a Rover Remote Kit . This is 100% optional as the Rover can be controlled by a cell phone. If you'd like to add one to your order we have it as a listing at this link . Create a robotics Rover or Tank with the 207 included brick compatible components. Use our online guides and directions or design your own bot! Parts to build both designs are included, as well as parts to build a gripper, lifter, or sweeper attachment! If you don't like our designs add in your own components and make something new! The Bit Board Rover was designed for both home and classroom use. Our online lessons and activities will have you programing your own projects in no time. We provide the instruction, code, and wiring diagrams for easy instruction no matter what your experience level. Thanks to the robust features of the Micro:Bit you'll be able to program with block based programming through Microsoft MakeCode, MicroPython, Python, Arduino, or JavaScript. Design and play your own games using with our robotic gripper! Play soccer, move objects, complete complex tasks! If the gripper isn't exciting enough, disassemble it to create a lifter or sweeper attachment. Automate tasks or remote control the gripper to annoy those around you. Kit includes: 207 Building Blocks/ Parts Crazy Circuits Bit Board V2 Right angled Micro USB Cable 2 x Brick Compatible Continuous Rotation Servos Brick Compatible 270 Degree Servo 2 x Line Following Sensors with Brick Adaptors 2 x Sets of Ribbon Cables Thumbstick 2 x Distance Sensor with Brick Adaptor AA Battery Holder with Brick Adaptor (Batteries not included) Pen Holder Neopixel Lighting Array with Brick Adaptor Plastic Organizer Larger Packs Come with additional Remote Control Components A Micro:Bit is not included with this kit, but can be added on in the options above. Warning : Kit includes small parts. These are a choking hazard. Not intended for children under the age of 10. Directions, Lesson Plans, and Guides Find step by step project guides in our online Project Database .

$35.95

By popular request we're now selling a complete Thumbstick Remote Kit for the Bit Board Rover . Control your Rover or Tank with this easy to assemble kit. It takes minutes to build and can be used with any Micro:Bit project you dream up. Note : You don't NEED this kit to remote control your Rover. We have guides on how to do that with a smart phone or raw Micro:Bit. If you have the electronics you can also 3D print or laser cut your own version of this kit using our free resourc es. The Rover Remote Kit is an optional add-on kit for the Bit Board Rover Kit . It uses a Bit Board, Micro:Bit, and two thumbsticks to control the Rover or Tank in a classic game controller style. The entire project is powered by a 2 AAA battery holder that's been designed to work in a brick based environment. You will need a Micro:Bit in order to use this remote and we can provide one if needed. Included Components: Laser Cut Body Thumbsticks Ribbon Cable AAA Battery Holder with Brick Adaptor Connector Pegs and Beams Nuts and Screws Directions, Guides, and Code A full build guide with code can be found in our Project Database . You can also find full guides for all our Rover and Tank projects.

$5.95

Overview If you're familiar with our Solar Bug 2.0 Kit then you'll recognize this project. By popular request we've made a reptile and amphibian version of the kit. The kits come with 8 different critters (four cards, and a design on each side) to choose from. For our Classroom Set you can also add in additional critter templates (so everyone in the class has the exact same thing). Create a solar powered critter that moves with this fun filled STEM project! Learn about solar energy by creating a simple solar circuit in minutes using only conductive tape! Cut out your critter template, decorate it, then add your solar cell and vibrating motor! All parts are connected with our special Maker Tape conductive tape, perfect for younger students. Once built these critters will move around in the sun, and best of all they'll never run out of power! The Single Kit comes with supplies for one complete critter and features the Alligator/ Salamander build card. Scissors and color supplies not included. The Standard Kit comes with supplies for four full critter, as well as 8 different card stock animal templates to choose from. Scissors and coloring supplies not included. The Classroom Set comes with supplies for 25 individual critters. We have several options for the types of critter cards you'll receive. We have a multi-pack that contains a mixture of all four card types. We also have individual card sets; Salamander and Crocodile Set, the Painted Turtle and Sea Turtle Set, the Horned Lizard and Armadillo Set, and the Bullfrog and Tree Frog set. Each set contains 25 of that type of card. Only available for the Classroom Set. Warning : Kit includes small parts. These are a choking hazard. Not intended for children under the age of 10. Directions, eBooks, Lesson Plans, and Videos Printable directions and an eBook can be found on our online Project Database , and include leveled Lesson Plans and Student Activity Sheets. Currently you can use the Solar Bug 2.0 guides, lessons, and activities for the Critters as they're identical projects. If you have questions about implementing our Solar Critters in your classroom or after school program please contact us. We've been helping educators implement solar activities in their classrooms for years and have many helpful tips and tricks.

$61.95

Please keep in mind that this kit contains enough supplies for students to build 50 Name Tags. Overview This fun project is a perfect group activity for classrooms, camps, after school programs, or high interest days. Each student creates their own colorful light-up "Hello My name Is" style name tag. The project takes 10-15 minutes to complete and is perfect for kids (or adults) ages 10+. The kits come with all the parts needed; paper blanks, color changing LEDs, self sticking safety pins, batteries, and Maker Tape. All you need to add are markers and scissors. All kits are shipped with our custom 10mm 'jumbo' color changing LEDs. This project is for ages 10 and up, and younger students will find this project very difficult to do on their own. The included coin cell batteries will last several days, slowly becoming dimmer. They can easily be replaced with a similar battery. The Classroom Set Includes enough parts for 50 individual name tags. Jumbo 10mm LEDs (x50) Self Sticking Safety Pins (x50) CR2032 Batteries (x50) Card Stock Paper Name Tag Templates (x50) Maker Tape Roll (20M/ 65 feet) Warning : Kit includes small parts and batteries. These are a choking hazard. Not intended for children under the age of 10. Directions, Lesson Plans, and Videos Printable directions and a step by step video can be found on our online Project Database . This includes printable large step by step guides, printable templates, and a teacher guide for fixing problems.

$14.95

Use this fun material to help connect your soft circuitry and wearable projects! Our Conductive Hook and Loop is a super handy material when creating wearable projects. Use our conductive Maker Tape or conductive thread to attach the Hook and Loop to your project. If you're new to the process we've got eBooks and Project Guides for you to follow! Our Hook and Loop comes in 8 inch strips. We typically recommend using between 1/4th to 1/2 of an inch of material per connection point on your project.

$13.95

Overview Add some fast paced fun to your next solar lesson with the Solar Racer Kit. This project will wow your students with it's simple to assemble design and exciting speed. The Solar Racer is a great tool to teach the fundamentals of solar energy, power conversion, motors, and real world solar application. Once assembled the Solar Racer moves at a fast pace (fast adult walk in full sunlight) and provides hours of exciting racing fun. The entire project requires no tools to build with components that easily pop together with friction and hold tight. We highly recommend having your students decorate their Racers for extra fun. Washable Markers, Sharpies, or craft paint work wonderfully and allow for a wide range of decorating options. The Solar Racer is available in a variety of pack sizes. The Single Solar Racer comes in retail packaging and makes for a nice birthday or stocking stuffer. Additionally 5, 10, 25, and 50 Classroom Packs are available that come in simpler packaging along with a discounted rate. We can also provide custom engraving on extra large orders for corporate and non-profit partners. Directions, eBooks, Lesson Plans, and Videos Printable directions and Step by Step Directions can be found on our online Project Database. A video guide and lessons plans will be available shortly. If you have questions about implementing our Solar Racers in your classroom or after school program please contact us. We've been helping educators implement solar activities in their classrooms for years and have many helpful tips and tricks.

$5.95

Overview Create a Solar Powered Mars Rover that moves with this fun filled STEM project! Learn about solar energy by creating a simple solar circuit in minutes using only conductive tape! Cut out your Mars Rover, decorate it, then add your solar cell and vibrating motor! All parts are connected with our special Maker Tape conductive tape, perfect for younger students. Once built these bots will move around in the sun, and best of all they'll never run out of power! The Standard Kit comes with supplies for four full Solar Mars Rovers. Scissors and coloring supplies not included, but required. The Classroom Set comes with supplies for 25 full Solar Mars Rovers. Student activity pages and lesson plans can be found on our website. Warning : Kit includes small parts. These are a choking hazard. Not intended for children under the age of 10. Directions, eBooks, Lesson Plans, and Videos Printable directions and an eBook can be found on our online Project Database , and include leveled Lesson Plans and Student Activity Sheets. If you have questions about implementing our Solar Mars Rovers in your classroom or after school program please contact us. We've been helping educators implement solar activities in their classrooms for years and have many helpful tips and tricks.

$1.95

This two AA battery holder also comes with a JST connector on the end of its 6 inch wire leads. You'll find this, and it's AAA counter part, included with some of our Crazy Circuits and Bit Board kits. The red JST connector allows for easy connections with our Bit Board and Right Angled Male Header Chip. If you're using this with certain brick building platforms, you can add on our custom holder. This allows Technic pegs to be inserted along the bottom. The battery holder is held in with double sided tape. You can also 3D print your own using our free files. If you use 2 AA rechargeable batteries you'll get 2.4V of output. If you're using 2 regular AA batteries you'll get 3V of output. Either output works find with our V2 Bit Board, but for simpler projects you'll need to make sure the power output is appropriate.

$1.95

This two AAA battery holder also comes with a JST connector on the end of its 6 inch wire leads. You'll find this, and it's AA counter part, included with some of our Crazy Circuits and Bit Board kits. The red JST connector allows for easy connections with our Bit Board and Right Angled Male Header Chip. If you're using this with certain brick building platforms, you can add on our custom holder. This allows Technic pegs to be inserted along the bottom. The battery holder is held in with double sided tape. You can also 3D print your own using our free files. If you use 2 AAA rechargeable batteries you'll get 2.4V of output. If you're using 2 regular AAA batteries you'll get 3V of output. Either output works find with our V2 Bit Board, but for simpler projects you'll need to make sure the power output is appropriate.

$0.95

A single 9V battery adaptor. We typically use it with our Relay Module for projects that need to power larger motors. Included in our Plant Watering Bundle and Bubble Blowing Bundle. Features six inch wire leads. Buying 1 of these gets you one 9V plug.

$2.95

This handy little motor with fan is great for a wide variety of projects. The motor will trigger from as little as 1.5V of input and makes a nice addition to simple solar projects. If you blow really hard on the fan you can also generate a brief power output of up to 2.5V which is enough to momentary light up a Red or Green LED. Important Motor Details Input Voltage: 1.5-9V DC RPM: 1700 - 7000 Wire Length: 8 Inches

$4.95

A strong DC motor with two different sized fan that can put out a surprisingly strong gust of air. This motor can output 6,000 RPM at 6V and up to 12,000 RPM at 12V, which is why we use it with our Bit Board Bubble Blower Project and Bundle. The motor also features soldered on 8 inch wire leads. When using this motor with a Bit Board or Robotics Board please be sure to use a Relay Module and a 9V Battery Plug. Important Motor Details Input Voltage: 6-12V DC RPM: 6000 - 12000 Wire Length: 8 Inches

$3.95

This IR Sensor works great with our Bit Board or Robotics Board and is a simple way to add a sensor to your next robotics project. This IR Sensor uses light to detect changes in color. We use this sensor with our Bit Board Rover in order to tell the difference between black and white in our Line Follow projects. This sensor will accept voltage inputs from 3.3V to 5V and can detect changes between 1mm and 25mm away. Output is digital, not analogue. Simple adjustments can be made using the on board potentiometer. Information is output via 4 male pin headers on the circuit board. To connect it to our Robotics or Bit Board just use a standard female to female ribbon cable or our custom Crazy Circuits Ribbon Cable . For example code and projects please look around our Project Database .

$3.95

These female to female ribbon cables are custom made to make your life easier! We've designed these from the ground up to work perfectly with our Bit Board and Robotics board, as well as simplify connections to sensors. You'll find these in all our Crazy Circuits and Bit Board Rover Kits. Why our are ribbon cables so amazing? First off, we've color matched the ribbon cable to the connectors on our Bit Board and Robotics Board. This means that board connections are as easy as connecting black wire to black pion and red wire to red pin. Secondly, we've added a 3 plug connector on one end which makes connecting it to our Robotics or Bit Board just a single push. Lastly, we've labeled both ends of the ribbon cables which takes away the headaches of connecting the wires to any sensor you end up using. Basically we've taken away the annoying color tracing issues that typically come with ribbon cables. When you order this you'll receive five of our Crazy Circuits Ribbon Cables.

$3.95

This Moisture Sensor is the perfect way to turn your robotics project into a gardening project. This Moisture Sensor uses capacitive sensing to detect minor changes in moisture, and we highly recommend using it in soil. We use this sensor with our Automated Plant Watering project and bundle. It's compatible with our Bit Board, Robotics Board, MicroBit, and MS Make Code. Voltage input is 3.3 - 5V and the output signal is digital. Information is output via the JST connector on the board and using the included JST to female ribbon cable. To connect it to our Robotics or Bit Board just use the included female to female ribbon cable. For example code and projects please look around our Project Database .

$4.95

Add some lighting effects to your next MicroBit or Arduino project without the need for soldering. This hard PCB stick features 8 individual WS2812B RGB LEDs, often called NeoPixels. Just plug your ribbon cable of choice, such as our Crazy Circuits Ribbon Cable , connect it to a Bit Board or Robotics Board and program away. Each individual LED can be controlled using only a single data line. We use this part in several of our Crazy Circuits and Bit Board Rover Kits. It's very easy to learn and control, especially with a MicroBit and MS Make Code. If you've never used one before check out our many guides . We find it to be super handy to show output from various sensors. To connect it to our Robotics or Bit Board use any three pin ribbon cable. The board requires a power input of between 3V and 5V, though it does tend to work best between 4V-5V. It is also possible to connect several of these boards together by soldering on male headers, female headers, or wires onto the additional solder points. The board also features two M33 sized screw holes for mounting. For a whole mess of example code and projects please look around our Project Database .

$4.95

A Relay Module that can easily be controlled by a Bit Board, Robotics Board, or MicroBit. A Relay Module allows a microcontroller, such as a MicroBit, to turn on or off a 'dumb' component. Think of it as a programmable DC switch. Typically these are used to turn on or off high amperage draw components, such as a motor or water pump, since such components will destroy a microcontroller if hooked up directly. We use this module in projects such as our Bubble Blower or Automatic Plant Watering System . To use this component, just connect it to your micro controller of choice with a ribbon cable. Then connect your motor (or other component) along with a power source (such as a 2AA battery holder or 9V plug) to the screw terminal side. You're now ready to turn things on and off. For example code, please reference this guide . For example projects please look around our Project Database .

$8.95

A strong DC water pump with tubing that can be used for all sorts of projects. This DC water pump operates at 6V-12V of power and can deliver up to 100ml per minute. We use this component is our Automated Plant Watering System project, you can check out the guide here . Also included is a 48 inch strip of rubber tubing which can be cut apart for use in your project. The plastic molding around the pump allows it to lay flat on a table or use the screw holes to securely mount it. Connect the rubber tubing to the two rubber connectors coming out of the pump. To power the motor attach wires to connectors on the backside of the motor. We recommend using a 9V battery to power this pump. When using this motor with a Bit Board or Robotics Board please be sure to use a Relay Module and a 9V Battery. Important Motor Details Input Voltage: 6-12V DC RPM: 2500-5000 RPM Water Flow: 100ml per minute at 12V Wire Length: None. Tubing Length: 48 Inches

$4.95

This motor leads a double life. By default it's a handy gearbox motor that'll output a strong 120 - 250 RM which makes it great for all sorts of robotics projects. However, if you use our included hand crank this motor becomes a surprisingly handy generator that can output up to 6V of DC power! This means it can easily power another motor or a whole mess of LEDs. Connect it to a Volt Meter and see how much energy you can create! You can use these motors with a Bit Board or Robotics Board, however you will need a Relay Module and a battery holder. Directly powering one of these off a microcontroller will most likely predominately damage it. Important Motor Details Input Voltage: 3-6V DC RPM: 120 - 250 RPM Wire Length: 8 Inches Output Generator Voltage: 1 - 6V DC

$5.95

Overview If you're familiar with our Solar Bug 2.0 Kit then you'll recognize this project. By popular request we've created a fun collection of underwater creatures that wiggle around in the sun. The kits come with 8 different sea creatures (four cards, and a design on each side) to choose from. For our Classroom Set you can also add in additional sea creature cards (so everyone in the class has the exact same thing). Create a solar powered sea creature that moves with this fun filled STEM project! Learn about solar energy by creating a simple solar circuit in minutes using only conductive tape! Cut out your sea creature template, decorate it, then add your solar cell and vibrating motor! All parts are connected with our special Maker Tape conductive tape, perfect for younger students. Once built these critters will move around in the sun, and best of all they'll never run out of power! The Single Kit comes with supplies for one complete sea creature and features the Sting Ray/ Cuttlefish card. Scissors and color supplies not included. The Standard Kit comes with supplies for four full sea creatures, as well as 8 different card stock creature templates to choose from. Scissors and coloring supplies not included. The Classroom Set comes with supplies for 25 individual sea creatures. We have several options for the types of critter cards you'll receive. We have a multi-pack that contains a mixture of all four card types. Warning : Kit includes small parts. These are a choking hazard. Not intended for children under the age of 10. Directions, eBooks, Lesson Plans, and Videos Printable directions and an eBook can be found on our online Project Database , and include leveled Lesson Plans and Student Activity Sheets. Currently you can use the Solar Bug 2.0 guides, lessons, and activities for the Critters as they're identical projects. If you have questions about implementing our Solar Sea Creatures in your classroom or after school program please contact us. We've been helping educators implement solar activities in their classrooms for years and have many helpful tips and tricks.

$5.95

Overview Learn about wind energy with this simple Wind Generator project! Turn on an LED with the power of Wind! All it takes is a strong blow and the fan turns, powering the LED. Use the included paper template to make additional fan blades, and see what happens. This project was designed as a simple 'Make and Take' project for younger students interested in learning about green energy. The entire project takes under five minutes to make and is perfect for ages 10+. All materials needed to build the Wind Wand are included, and only tool needed to build it is a pair of scissors. The Single version of the kit comes in a shrink wrapped plastic container. The Classroom Set version has enough materials for 25 Kits and is bulk packaged. Paper Blade template included. If you need replacements, follow the link below and print off more. Educational resources are available for free. Directions, eBooks, Lesson Plans, and Videos Printable directions and Step by Step Directions can be found on our online Project Database. If you have questions about implementing our Wind Wand in your classroom or after school program please contact us. We've been helping educators implement Green Energy activities in their classrooms for years and have many helpful tips and tricks.

$52.95

Overview The Brown Dog Gadgets Flat Fish is a paper circuitry project designed to directly support student exploration of the circuitry involved in building underwater robots! Are you a robotics coach who wants to firm up some core concepts used in your real ROVs or teach ROV circuitry, but also hate getting wet? Then the Flat Fish is the project for you! This paper circuits project is really an ROV simulator in disguise! Have your students work in pairs to build their own working control box that acts just like a REAL ROV control box. But on paper. The Flat Fish is a great companion piece for educators looking to expand their students' understanding of robotics. Also included with the Flat Fish are our fantastic lesson plans and activity videos. Just follow our guides and your students will be one step closer to mastering the world of underwater ROVs. The Flat Fish comes in a '5 Pack' and is appropriate for 5-15 children (1-3 kids per set of materials). The kit comes with 5 complete sets of electronics, conductive Maker Tape, and large card stock template. Please keep in mind that while many of the parts in this kit can be reused, most of the parts CAN NOT. This kit is design to be ready to go out of the box, but you will need scissors for each group of students. It is also recommended to have a set of Wire Strippers available if needed. Warning : Kit includes small parts. These are a choking hazard. Not intended for children under the age of 10. Directions, eBooks, Lesson Plans, and Videos Printable directions and an eBook can be found on our online Project Database ,. If you have questions about implementing our Flat Fish in your classroom or after school program please contact us. We've been helping educators implement solar activities in their classrooms for years and have many helpful tips and tricks.

$8.95

Please note, this accessory is included in all Bit Board Rover Kits produced after Feb 2026. The purpose of this listing is for customers who have the previous version of the Bit Board Rover Kit that did not include these additional parts. The Claw is a new type of advanced gripper for the Bit Board Rover . It's compatible with ALL generations of the Bit Board Rover Kit. Bit Board Rover, Servo, or MicroBit, are not included. Contains all brick building parts to build The Claw gripper. A build guide for The Claw can be found here.

$3.95

New for 2026 is our Crazy Circuits Power Chip with AAA Battery pack! This part replaces our CR2032 Coin Cell Battery Chip in all our kits. This component connects a 2 AA or 2 AAA battery pack to the Crazy Circuits system. To help with building projects, we've added in two requested features! First, a small status LED shows when power is flowing to the system. Second, we've built in Short Circuit protection. If a short is present in your circuit the status LED will turn off and power will stop flowing to your project. This prevents batteries from wearing our or getting uncomfortably hot.