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GEMMA and CircuitPython: More Adafruit Learning System Updates

Adafruit’s new GEMMA M0 wearable microcontroller comes with CircuitPython support fresh from the factory. Plug it into USB and use any text editor to open and edit the “.py” file…it’s just that simple, no IDE to install!

We’ll be updating most of our “classic” GEMMA guides on the Adafruit Learning System to provide example CircuitPython code for the new board along with the original Arduino sketches, and bringing the latter up-to-date where needed. GEMMA M0 can run either one.

With something like 160 GEMMA-related guides in the Adafruit Learning System, watch for updates in small batches. Here are the latest:

A NeoPixel Blinkendisc — Customize a Flashflight or other suitable flying disc, and throw blinky programs at your friends.

Light-Activated Pixel Heart — Wear your heart on your sleeve! Or at least on your lapel. This light-up heart display uses a light-dependent resistor and GEMMA, Adafruit’s tiny wearable electronics platform.

NeoPixel Tiara — You can make a crown of light for prom or your birthday this year! A few free-wired NeoPixels make you the cyber-pageant queen.

LED Masquerade Masks — Got a costume ball coming up? Learn to adorn masquerade masks with LEDs, three ways! This guide will show you how to make three masks at different difficulty levels: Super Simple Sequin Mask, NeoPixel GEMMA Mask and Audio-Reactive Mask.

Trinket / Gemma Mini-Theramin — Snuck a Trinket guide in there! But this project works equally well with GEMMA. Make music with tiny microcontrollers and varying light levels.


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

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