# Tappy Robotic Hand ## Overview ## Tappy Hand This project combines very basic materials to create an entrancing hand that can be "programmed" to move its fingers in different sequences. ![](https://cdn-learn.adafruit.com/assets/assets/000/073/627/medium800thumb/makecode_Untitled3.2019-03-26_15_00_20.jpg?1553626844) ## The Electronics This project is based around the [Circuit Playground Express](https://learn.adafruit.com/adafruit-circuit-playground-express). This board is packed with sensors and is easy to program using the block-based code editor [MakeCode](https://learn.adafruit.com/makecode). ### Circuit Playground Express [Circuit Playground Express](https://www.adafruit.com/product/3333) **Circuit Playground Express** is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and made it even better! Not only did we pack even more sensors in, we also made it even easier to... In Stock [Buy Now](https://www.adafruit.com/product/3333) [Related Guides to the Product](https://learn.adafruit.com/products/3333/guides) ![A Black woman's manicured hand holds a round microcontroller with lit up LEDs.](https://cdn-shop.adafruit.com/640x480/3333-05.jpg) ### Continuous Rotation Servo [Continuous Rotation Servo](https://www.adafruit.com/product/154) This servo rotates fully forward or backward instead of moving to a position. You can use any servo code, hardware, or library to control these servos. Good for making simple moving robots. Comes with four different horns, as shown. To control with an Arduino, we suggest connecting... In Stock [Buy Now](https://www.adafruit.com/product/154) [Related Guides to the Product](https://learn.adafruit.com/products/154/guides) ![Continuous Rotation Servo with three pin cable](https://cdn-shop.adafruit.com/640x480/154-07.jpg) ### Continuous Rotation Servo Wheel [Continuous Rotation Servo Wheel](https://www.adafruit.com/product/167) Plastic wheel with a cutout specially designed to allow attachment to our [larger continuous rotation servo](https://www.adafruit.com/product/154). Makes it easy to get your robot rolling. Each wheel comes with a rubber tire that is quite sturdy. To attach, just remove the horn... In Stock [Buy Now](https://www.adafruit.com/product/167) [Related Guides to the Product](https://learn.adafruit.com/products/167/guides) ![Small, black, plastic wheel](https://cdn-shop.adafruit.com/640x480/167-02.jpg) ### USB cable - USB A to Micro-B [USB cable - USB A to Micro-B](https://www.adafruit.com/product/592) This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or microcontroller Approximately 3 feet / 1 meter long Out of Stock [Buy Now](https://www.adafruit.com/product/592) [Related Guides to the Product](https://learn.adafruit.com/products/592/guides) ![USB cable - USB A to Micro-B - 3 foot long](https://cdn-shop.adafruit.com/640x480/592-01.jpg) ### Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces [Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces](https://www.adafruit.com/product/3448) When working with unusual non-header-friendly surfaces, these handy cables will be your best friends! No longer will you have long, cumbersome strands of alligator clips. These compact jumper cables have a premium male header on one end and a grippy mini alligator clip on the... Out of Stock [Buy Now](https://www.adafruit.com/product/3448) [Related Guides to the Product](https://learn.adafruit.com/products/3448/guides) ![Group of Small Alligator Clip to Male Jumper Wires](https://cdn-shop.adafruit.com/640x480/3448-00.jpg) ### JST 2-pin Extension Cable with On/Off Switch - JST PH2 [JST 2-pin Extension Cable with On/Off Switch - JST PH2](https://www.adafruit.com/product/3064) By popular request - we now have a way you can turn on-and-off Lithium Polymer batteries without unplugging them. This **PH2 Female/Male JST 2-pin Extension Cable ** comes with an in-line **Switch** - click once to turn on, click again to turn off.... In Stock [Buy Now](https://www.adafruit.com/product/3064) [Related Guides to the Product](https://learn.adafruit.com/products/3064/guides) ![Top view shot of JST 2-pin Extension Cable with On/Off Switch.](https://cdn-shop.adafruit.com/640x480/3064-02.jpg) # Power If you'd like to power your project without connecting a USB cable to your computer either of these battery options work well to untether your device. ### 3 x AAA Battery Holder with On/Off Switch and 2-Pin JST [3 x AAA Battery Holder with On/Off Switch and 2-Pin JST](https://www.adafruit.com/product/727) This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries and have an on-off switch. That makes... In Stock [Buy Now](https://www.adafruit.com/product/727) [Related Guides to the Product](https://learn.adafruit.com/products/727/guides) ![Front angled shot of 3 x AAA battery holder with on-off switch and 2-pin JST PH connector.](https://cdn-shop.adafruit.com/640x480/727-07.jpg) ### Alkaline AAA batteries - 3 pack [Alkaline AAA batteries - 3 pack](https://www.adafruit.com/product/3520) Battery power for your portable project! These batteries are good quality at a good price, and work fantastic with any of the kits or projects in the shop that use AAA's. This is a pack of **3 AAA batteries**. These batteries are Alkaline (MnO2) chemistry, with a... In Stock [Buy Now](https://www.adafruit.com/product/3520) [Related Guides to the Product](https://learn.adafruit.com/products/3520/guides) ![Angled shot of 3 PKcell AAA batteries. ](https://cdn-shop.adafruit.com/640x480/3520-00.jpg) ### Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh [Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh](https://www.adafruit.com/product/3898) Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of **400mAh** for a total of about 1.9 Wh. If you need a larger (or smaller!)... In Stock [Buy Now](https://www.adafruit.com/product/3898) [Related Guides to the Product](https://learn.adafruit.com/products/3898/guides) ![Slim Lithium Ion Polymer Battery 3.7v 400mAh with JST 2-PH connector and short cable](https://cdn-shop.adafruit.com/640x480/3898-05.jpg) ## Other Materials In addition to the electronics, for this project you will need: - A known good A to micro-B [USB cable](https://www.adafruit.com/product/592) - Scrap corrugated cardboard - Scissors and/or box cutter - [Hot glue gun](https://www.amazon.com/dp/B006IY359K/ref=cm_sw_r_tw_dp_U_x_K0DeCbCR4A6B5) - [Hot glue sticks](https://www.amazon.com/Surebonder-PRO2-100-Watt-High-Temperature/dp/B00627G6QC/ref=sr_1_6?s=hi&ie=UTF8&qid=1548380526&sr=1-6&keywords=10+inch+glue+sticks)  - A bamboo skewer - [Next Page](https://learn.adafruit.com/robotic-tapping-hand-with-cpx/cardboard-construction.md) ## Featured Products ### Circuit Playground Express [Circuit Playground Express](https://www.adafruit.com/product/3333) **Circuit Playground Express** is the next step towards a perfect introduction to electronics and programming. We've taken the original Circuit Playground Classic and made it even better! Not only did we pack even more sensors in, we also made it even easier to... In Stock [Buy Now](https://www.adafruit.com/product/3333) [Related Guides to the Product](https://learn.adafruit.com/products/3333/guides) ### Continuous Rotation Servo [Continuous Rotation Servo](https://www.adafruit.com/product/154) This servo rotates fully forward or backward instead of moving to a position. You can use any servo code, hardware, or library to control these servos. Good for making simple moving robots. Comes with four different horns, as shown. To control with an Arduino, we suggest connecting... In Stock [Buy Now](https://www.adafruit.com/product/154) [Related Guides to the Product](https://learn.adafruit.com/products/154/guides) ### Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces [Small Alligator Clip to Male Jumper Wire Bundle - 6 Pieces](https://www.adafruit.com/product/3448) When working with unusual non-header-friendly surfaces, these handy cables will be your best friends! No longer will you have long, cumbersome strands of alligator clips. These compact jumper cables have a premium male header on one end and a grippy mini alligator clip on the... Out of Stock [Buy Now](https://www.adafruit.com/product/3448) [Related Guides to the Product](https://learn.adafruit.com/products/3448/guides) ### JST 2-pin Extension Cable with On/Off Switch - JST PH2 [JST 2-pin Extension Cable with On/Off Switch - JST PH2](https://www.adafruit.com/product/3064) By popular request - we now have a way you can turn on-and-off Lithium Polymer batteries without unplugging them. This **PH2 Female/Male JST 2-pin Extension Cable ** comes with an in-line **Switch** - click once to turn on, click again to turn off.... In Stock [Buy Now](https://www.adafruit.com/product/3064) [Related Guides to the Product](https://learn.adafruit.com/products/3064/guides) ### Continuous Rotation Servo Wheel [Continuous Rotation Servo Wheel](https://www.adafruit.com/product/167) Plastic wheel with a cutout specially designed to allow attachment to our [larger continuous rotation servo](https://www.adafruit.com/product/154). Makes it easy to get your robot rolling. Each wheel comes with a rubber tire that is quite sturdy. To attach, just remove the horn... In Stock [Buy Now](https://www.adafruit.com/product/167) [Related Guides to the Product](https://learn.adafruit.com/products/167/guides) ### USB cable - USB A to Micro-B [USB cable - USB A to Micro-B](https://www.adafruit.com/product/592) This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or microcontroller Approximately 3 feet / 1 meter long Out of Stock [Buy Now](https://www.adafruit.com/product/592) [Related Guides to the Product](https://learn.adafruit.com/products/592/guides) ### Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh [Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh](https://www.adafruit.com/product/3898) Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of **400mAh** for a total of about 1.9 Wh. If you need a larger (or smaller!)... In Stock [Buy Now](https://www.adafruit.com/product/3898) [Related Guides to the Product](https://learn.adafruit.com/products/3898/guides) ### 3 x AAA Battery Holder with On/Off Switch and 2-Pin JST [3 x AAA Battery Holder with On/Off Switch and 2-Pin JST](https://www.adafruit.com/product/727) This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries and have an on-off switch. That makes... In Stock [Buy Now](https://www.adafruit.com/product/727) [Related Guides to the Product](https://learn.adafruit.com/products/727/guides) ## Related Guides - [Adafruit Circuit Playground Express](https://learn.adafruit.com/adafruit-circuit-playground-express.md) - [Light Paintbrush with Circuit Playground](https://learn.adafruit.com/lightpaint-cplay.md) - [Stand-alone programming AVRs using CircuitPython](https://learn.adafruit.com/stand-alone-programming-avrs-using-circuitpython.md) - [CircuitPython Basics: Analog Inputs & Outputs](https://learn.adafruit.com/circuitpython-basics-analog-inputs-and-outputs.md) - [Bunny Ears with MakeCode](https://learn.adafruit.com/bunny-ears-with-makecode.md) - [Cartoon Network MakeCode: Garnet's Palm Gems from Steven Universe](https://learn.adafruit.com/cartoon-network-makecode-garnet-s-palm-gems-from-steven-universe.md) - [Circuit Playground or Hallowing Jack-o'-Lantern](https://learn.adafruit.com/circuit-playground-jack-o-lantern.md) - [Trash-Built Robotic Fish](https://learn.adafruit.com/trash-robo-fish.md) - [Musical Walking Stick with Circuit Playground](https://learn.adafruit.com/musical-cane-walking-stick.md) - [Xenomorph Halloween Candy Bucket](https://learn.adafruit.com/xenomorph-halloween-candy-bucket.md) - [Circuit Playground Digital Input](https://learn.adafruit.com/circuit-playground-digital-input.md) - [Chinese Dragon Puppet with Motion-Reactive Flame Effect](https://learn.adafruit.com/chinese-dragon-puppet-with-motion-reactive-flame-effect.md) - [LED Reactive Light-Up Hockey Puck in MakeCode](https://learn.adafruit.com/led-hockey-puck.md) - [Datalogging and File Storage in MakeCode](https://learn.adafruit.com/data-logging-and-file-storage-in-makecode.md) - [Steven Universe Cosplay Shirt & Gem](https://learn.adafruit.com/steven-universe-cosplay-shirt-gem.md)