Using a Circuit Playground Express programmed with MakeCode, you can control a servo motor to swing open the door on your model garage! A pushrod mechanism made from a paperclip and cardboard mounting horn is the simple, yet effective method you'll use to make it all work.

Use cardboard to build a slider crank linkage mechanism powered by a servo motor to control a slider crank mechanism. Program the Circuit Playground Express using MakeCode to control the motion and use it to build your own machines or animatronics.

The DSP-G1 is a digital synthesizer chip modeled after an analog synth, that has three oscillators per voice, a +24dB filter, two ADSR envelope generators, LFO, and more, for a great, paraphonic, five-voice 80s synth sound! Control it using MIDI note messages with a Trellis or two for input, and six knobs to send MIDI CC parameters to the synth.

Learn to transcribe songs into MakeCode or CircuitPython using procedures for song passages and phrases. Play them back over a piezo speaker for a retro hip personal spy theme at any time!

This AdaBox is super sneaky with a Secret + Spy + Security theme. Everything in this box will teach you stuff they don't want you to know! You'll use your brains and hands to solve puzzles, send secret messages, bypass locks, and listen in on radio waves around you.

Hold a capacitive touch pad on the Gemma M0 to light up a UV LED and read an invisible message! Code it in MakeCode!

Use CircuitPython to program the Gemma M0 to sound an alarm any time the vibration switch is triggered! Adjust the sensitivity in software for any scenario!

Using a Gemma M0, this sound prank device will play highly distracting sounds every 30 minutes (or however long you decide) including ringtones, cricket chirps, beeps, doorbells, and high pitched sounds only teenagers can hear!

Use your powers for good while teaching people about computer security! This Gemma M0 will pretend to be a USB keyboard when plugged into a host computer, and then it will inject the machine with commands to swap background images or leave warning messages that can't be ignored! Or, turn it into a USB Mouse Jiggler for more antics!

The Gemma M0 can act as a USB HID mouse. By coding it to move the cursor all on its own, you can devise the perfect prank for any computer user in your life!

This transmitter sends dots and dashes at the touch of the paddle over the AM airwaves. Made from a Gemma M0, wires, nails, conductive fabric (or aluminum foil), and a block of wood.

This guide will show you how to make your own hollowed out book, and then show how to make a simple alarm with a Circuit Playground Express, or, even set up the Haven app on an old Android phone, just like Snowden would want you to!

We've filled our custom crossword puzzle and word search with fun STEAM/STEM, high-tech, and Adafruit terms. You can make your own to share with your students, classmates, and friends!

Have you built a Picade or other retro cabinet and want to be able to insert coins to play? Add this programmable coin acceptor and you'll be able to relive the glory days of the arcade!

Use the sound sensor (microphone) on your Circuit Playground Express to detect a puff of air, which will then fade up the NeoPixels to illuminate this beautiful cloud of cotton. Build it all in the block-based MakeCode GUI!