# Circuit Playground Wearable ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/033/989/medium800/circuit_playground_hero-wrist-wide.jpg?1468857371) ## Hello Circuit Playground! Circuit Playground is our new all-in-one board aimed towards education and beginners.It features 10 NeoPixel LEDs, a motion sensor, temperature sensor, mini speaker, sound sensor, two buttons and a switch. It’s a great a way to practice programming on real hardware with no soldering or sewing required! The on-board Atmega32u4 processor is Arduino compatible so, you can program it with the Arduino IDE and upload code via micro USB. It also has a JST connector, so you can plug in a lipo battery to make your projects portable. ## 3D Printing & Circuit Playground There's lots of simple and easy ways to wear circuit playground. This project uses 3D Printing and flexible material to make a bumper and 2-piece strap. ## Parts & Supplies - [Circuit Playground](https://www.adafruit.com/products/3000) - [3D Printer](https://www.adafruit.com/category/128) - [Ninjaflex Filament](https://adafruit.com/products/2080) ## Prerequisite Guides Let's get familiar with Circuit Playground. Walkthrough the introduction guide. - [Introduction to Circuit Playground](../../../../introducing-circuit-playground) https://www.youtube.com/watch?v=wy8igdGP5UM # Circuit Playground Wearable ## 3D Printing ![](https://cdn-learn.adafruit.com/assets/assets/000/033/988/medium800/circuit_playground_printed-parts.jpg?1468855378) ## Slice Settings for Ninjaflex Depending on the 3D printer, Ninjaflex can be relatively challenging to print. The ideal type of 3D printer for printing Ninjaflex has a spring-loaded direct drive. Below are some recommend slice settings. - 240C Extruder - No-Heated Bed Required - 30mm/s Default Printing Speed - 0.2mm Layer Height ## To React or Not To React? Retraction is where the extruder will pull filament out of the nozzle to avoid over extruding which can cause zips, blobs and other artifacts. Since Ninjaflex extrudes very slowly, it might be effective to disable retraction, or use a very small amount to prevent under extrusion. [STLs on Thingiverse](http://www.thingiverse.com/thing:1682293/) [STLs on YouMagine](https://www.youmagine.com/designs/wearable-circuit-playground) [Download Source](http://a360.co/29OSTnu) [Circuit Playground CAD](http://a360.co/29J7KBB) ## Customize Design If you're interested in adjusting the length or width of the srtap, you can easily do so by modifying the "User Parameters" inside of Autodesk Fusion 360. Watch the video tutorial below to find out how simple it is. https://www.youtube.com/watch?v=mUCx9MsDHjM # Circuit Playground Wearable ## Put It Together ## Insert Straps Start by inserting **strap-a.stl** into one of the slots on the bumper. Pull it all the way through until the extension gets caught.    Insert **strap-b.stl** by pushing the extension stopper through the second slot. Pull the stopper through the slot. ![circuit_playground_bumper-slots.jpg](https://cdn-learn.adafruit.com/assets/assets/000/033/992/medium640/circuit_playground_bumper-slots.jpg?1468857713) ![circuit_playground_strap-endstop.jpg](https://cdn-learn.adafruit.com/assets/assets/000/033/993/medium640/circuit_playground_strap-endstop.jpg?1468857737) ![circuit_playground_strap-B-endstop.jpg](https://cdn-learn.adafruit.com/assets/assets/000/033/997/medium640/circuit_playground_strap-B-endstop.jpg?1468858011) ## Fasten Straps Use the holes on **strap-a.stl**  to adjust the size. The nub on **strap-b.stl** can be pressed through one of the holes. The excess from **strap-a.stl** can be inserted into the slot on **strap-b.stl** ![circuit_playground_strap-nub.jpg](https://cdn-learn.adafruit.com/assets/assets/000/033/994/medium640/circuit_playground_strap-nub.jpg?1468857895) ![circuit_playground_strap-slot.jpg](https://cdn-learn.adafruit.com/assets/assets/000/033/996/medium640/circuit_playground_strap-slot.jpg?1468857918) ## Install Circuit Playground onto Bumper Line up the JST and microUSB ports on the bumper so they're in line with the cutouts. The PCB from Circuit Playground is fitted into the bumper with the edges tucked into the lip. Press the PCB into the bumper so the edges are all tucked in. ![circuit_playground_bumper-edge.jpg](https://cdn-learn.adafruit.com/assets/assets/000/034/000/medium640/circuit_playground_bumper-edge.jpg?1468858231) ![circuit_playground_jst.jpg](https://cdn-learn.adafruit.com/assets/assets/000/034/001/medium640/circuit_playground_jst.jpg?1468858246) ![circuit_playground_microUSB.jpg](https://cdn-learn.adafruit.com/assets/assets/000/034/002/medium640/circuit_playground_microUSB.jpg?1468858257) ## Bumper and Strap The back of the bumper has an opening, reveling the lovely silk screen on the back of Circuit Playground. ![circuit_playground_finished-cp.jpg](https://cdn-learn.adafruit.com/assets/assets/000/034/005/medium640/circuit_playground_finished-cp.jpg?1468858409) ![circuit_playground_cp-back.jpg](https://cdn-learn.adafruit.com/assets/assets/000/034/006/medium640/circuit_playground_cp-back.jpg?1468858422) ## Fitting On Wrist While fitting the strap onto your wrist, you may find one of the extension stoppers will come loose and pull through the slots on the bumper. If that happens, you might fine it easier if you buckle the two straps together first, and then pull one of the extension stopper through the slot. Then, install Circuit Playground onto the bumper while the fitted is secured to your wrist. ![circuit_playground_install-on-wrist.jpg](https://cdn-learn.adafruit.com/assets/assets/000/033/998/medium640/circuit_playground_install-on-wrist.jpg?1468858079) ## Plug In Battery A lipoly battery can be tucked underneath the PCB or band. Try both ways and see which is more comfortable and practicle.  ![circuit_playground_lipo.jpg](https://cdn-learn.adafruit.com/assets/assets/000/034/003/medium640/circuit_playground_lipo.jpg?1468858286) ![circuit_playground_on-wrist-powered.jpg](https://cdn-learn.adafruit.com/assets/assets/000/034/004/medium640/circuit_playground_on-wrist-powered.jpg?1468858312) ## Featured Products ### Circuit Playground Classic [Circuit Playground Classic](https://www.adafruit.com/product/3000) Would you like to learn electronics, with an all-in-one board that has sensors and LEDs built in? **Circuit Playground** is here - and it's the best way to practice programming on real hardware with no soldering or sewing required! This is the **Classic**... In Stock [Buy Now](https://www.adafruit.com/product/3000) [Related Guides to the Product](https://learn.adafruit.com/products/3000/guides) ### Lithium Ion Polymer Battery - 3.7v 500mAh [Lithium Ion Polymer Battery - 3.7v 500mAh](https://www.adafruit.com/product/1578) 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 500mAh for a total of about 1.9 Wh. If you need a larger (or smaller!) battery, In Stock [Buy Now](https://www.adafruit.com/product/1578) [Related Guides to the Product](https://learn.adafruit.com/products/1578/guides) ### NinjaFlex - 1.75mm Diameter - Midnight Black - 0.5Kg [NinjaFlex - 1.75mm Diameter - Midnight Black - 0.5Kg](https://www.adafruit.com/product/1690) Looking beyond ABS? Tired of PLA? Open a world of possibilities, limited only by your imagination. NinjaFlex, a cutting-edge filament for 3D printers, is a specially formulated thermoplastic elastomer (TPE) that produces flexible prints with elastic properties. Patent pending technology allows... No Longer Stocked [Buy Now](https://www.adafruit.com/product/1690) [Related Guides to the Product](https://learn.adafruit.com/products/1690/guides) ### NinjaFlex - 1.75mm Diameter - Sterling Silver - 0.5Kg [NinjaFlex - 1.75mm Diameter - Sterling Silver - 0.5Kg](https://www.adafruit.com/product/2108) Looking beyond ABS? Tired of PLA? Open a world of possibilities, limited only by your imagination. NinjaFlex, a cutting-edge filament for 3D printers, is a specially formulated thermoplastic elastomer (TPE) that produces flexible prints with elastic properties. Patent pending technology allows... No Longer Stocked [Buy Now](https://www.adafruit.com/product/2108) [Related Guides to the Product](https://learn.adafruit.com/products/2108/guides) ### NinjaFlex - 1.75mm Diameter - Snow White - 0.5 Kg [NinjaFlex - 1.75mm Diameter - Snow White - 0.5 Kg](https://www.adafruit.com/product/1691) Discontinued - **you can grab ** [NinjaFlex - 1.75mm Diameter - Almond-Peach Smoothie - 0.50Kg](https://www.adafruit.com/product/2383) **instead! ** Looking beyond ABS? Tired of PLA? Open a world of possibilities, limited only by your imagination. NinjaFlex, a... No Longer Stocked [Buy Now](https://www.adafruit.com/product/1691) [Related Guides to the Product](https://learn.adafruit.com/products/1691/guides) ### Flashforge Creator PRO [Flashforge Creator PRO](https://www.adafruit.com/product/2742) The **Flashforge Creator Pro** is the latest addition to FlashForge’s Creator family, built upon an open source platform. Based on proven design of the Creator X chassis, the Pro is now enclosed so you can print ABS better and more efficient than ever. The upgraded... No Longer Stocked [Buy Now](https://www.adafruit.com/product/2742) [Related Guides to the Product](https://learn.adafruit.com/products/2742/guides) ### PrintrBot Simple Metal 3D Printer - Black - Assembled [PrintrBot Simple Metal 3D Printer - Black - Assembled](https://www.adafruit.com/product/1760) New from Printrbot, the Metal Simple is a brand new rock solid, all metal, fully-assembled Printrbot Simple! As opposed to the [Printrbot Simple Kit](http://www.adafruit.com/products/1735), all of the laser cut wood parts have been replaced by rock solid metal and assembled. In... No Longer Stocked [Buy Now](https://www.adafruit.com/product/1760) [Related Guides to the Product](https://learn.adafruit.com/products/1760/guides) ## Related Guides - [Introducing Circuit Playground](https://learn.adafruit.com/introducing-circuit-playground.md) - [Circuit Playground & Bluetooth Low Energy](https://learn.adafruit.com/circuit-playground-and-bluetooth-low-energy.md) - [Circuit Playground Bike Glove](https://learn.adafruit.com/circuit-playground-bike-glove.md) - [Wonder Woman Cosplay Bracers](https://learn.adafruit.com/wonder-woman-cosplay-bracers.md) - [Circuit Playground Yoyo](https://learn.adafruit.com/circuit-playground-yoyo.md) - [Circuit Playground Hot Potato](https://learn.adafruit.com/circuit-playground-hot-potato.md) - [How Cold Is It?](https://learn.adafruit.com/how-cold-is-it.md) - [Circuit Playground Kaleidoscope](https://learn.adafruit.com/circuit-playground-kaleidoscope.md) - [Simple and Beautiful NeoPixel Holiday Lights](https://learn.adafruit.com/simple-beautiful-color-changing-light-strand.md) - [Circuit Playground PZ-1: Pizza Box DJ Controller](https://learn.adafruit.com/circuit-playground-pizza-box-dj-controller.md) - [Ever-Burning Flame Painting](https://learn.adafruit.com/ever-burning-flame-painting.md) - [Meditation Trainer](https://learn.adafruit.com/heart-rate-variability-sensor.md) - [Glowing Beehive Hairdo Wig](https://learn.adafruit.com/glowing-beehive-hairdo-wig.md) - [Circuit Playground Fruit Drums](https://learn.adafruit.com/circuit-playground-fruit-drums.md) - [Circuit Playground Hourglass](https://learn.adafruit.com/circuit-playground-hourglass.md) - [Circuit Playground's Motion Sensor](https://learn.adafruit.com/circuit-playgrounds-motion-sensor.md)