Daily Cheer Automaton
This project creates an automatic cheering device that will play an MP3 of a crowd cheering loudly every day at 7 PM. Even if you can't be around at the right time, this device will remember for you and participate in the collective celebration of healthcare workers on your behalf. This project is designed around the Feather system of boards and can be easily modified to play any MP3 of your choice, and to go off at any time of day.
Open Source Protective Face Shield Designs
This prototype open-source face shield is based on a design originally published by Prusa Research can be created using a 3D printed headband and laser-cut or hand-cut clear plastic shield. We cover a few ways you can make these based on the tools you have available.
How to Build a Testing Jig
Need to quickly test a lot of custom boards? Time to build a testing jig! This guide takes you through the basics of soldering pogo pins straight and adding other necessary testing components to your test jig.
Machine Learning with Marshmallows and Tiny Sorter
This project uses a laptop's built-in camera to identify various cereal and marshmallows. The computer then sorts them based on a model you train. A Circuit Playground Express communicates with the computer to decide when to sort which marshmallow/cereal via a micro servo.
Musical Walking Stick with CircuitPlayground
Take any short clip of music and have it automatically start playing as soon as you pick up your cane and start walking. A few lines of code add illumination to a custom face plate of your design, making the walking stick a gleaming beacon as well as a magically musical object.
Xenomorph Halloween Candy Bucket
This robotic candy bucket shoots out a small receptacle to retrieve candy and bring it back into the bucket. Two servo motors powered by a Circuit Playground Express coded with MakeCode powers this project.
Magical Cardboard Craft Obsidian Sword
This sword's design is inspired by the Obsidian Sword in Cartoon Network's animated series "Steven Universe". The sword is made out of cardboard, ringed with lights, and has a touch sensitive handle, illuminating the lights as soon as you pick up the sword.
Simple Vertical Wordclock
This vertical take on the ever-popular wordclock spells out the time by illuminating rows of words. Reading from top to bottom, any five minute increment of time can be spelled out. This project uses a laser engraved piece of acrylic paired with a cardboard stand and is lit by a strip of NeoPixels powered by a Feather M4 Express board.
Color Spinner Camera Ring Light
This NeoPixel ring adds a new light source to your photography subjects and can be quickly adapted to provide bright colors to your shots. This project demonstrates the use of Circuit Playground Express and MakeCode to control NeoPixels and involves minimal soldering.
Drama Piñata
This customizable piñata is outfitted with Circuit Playground Express, enabling it to react when hit and disgorge its contents after being struck a set number of times. Demonstrates how to use MakeCode, CircuitPython, and basic mechanical principles.
CRICKIT Exhibit Demo Board
A playground of inputs and outputs, this board demonstrates all the functions possible with CRICKIT for Circuit Playground Express. It is easily customizable using CircuitPython.
Crickit Dancing Marionette Kit
This project demonstrates how to create a robotically-controlled marionette made out of household recyclable materials, controlled by CRICKIT for CPX, and shows how to use CircuitPython to control inputs and outputs.
Robotic Xylophone with Adafruit Grand Central
This robotic musician uses eight tiny solenoids to tap out melodies on a toy xylophone. The Adafruit Grand Central M4 controls the solenoids using Circuit Python, a quickly growing and easy to use programming language.
MLX90393 Wide-Range 3-Axis Magnetometer
The MLX90393 isn't Just One More 3-axis magnetometer! This device has a very wide measurement range (from 5-50mT), making it useful for far more than just orientation sensing toward a magnetic pole. You could use it for 'magnetic fingerprinting', for example, which uses variations in magnetic fields in a known/fixed location to determine where you are indoors. Or it makes a great contactless interface for measuring changes in anything the generates a magnetic field (motors, etc.). Dig into this guide for details on how to get started with this flexible magnetic field sensor!
Glue Stick Light Pipe Sculpture
Use glue sticks, Circuit Playground Express, and a handful of everyday materials to create your own illuminated art. This project uses MakeCode to conduct light shows with the NeoPixel strip, and is easy to adapt and experiment with.