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All-in-one game emulator/controller built inside a NES cartridge using Joy Bonnet and Raspberry Pi Zero!
NES Cart RetroPie Game Console
by John Park
Make a pinball controller for your iOS device using Teensy
Pinball Controller for iPad
by John Park
What time is it? Metro Mini time! Build this stylish, minimalist clock.
Metro Minimalist Clock
by John Park
Use infrared IR transmission to blast your targets -- all made with Circuit Playground Express!
Circuit Playground Express Laser Tag
by John Park
Make a fancy, color changing Pixie Dust Bag with Circuit Playground Express!
NeoPixie Dust Bag with Circuit Playground Express
by John Park
You can connect this easy-to-build ESP8266 Feather HUZZAH MP3 player to all your Internet alerts!
WiFi Music Alert Box
by John Park
Breathe spooky life into an old radio by adding a Feather microcontroller to read the dial and play mysterious sounds and music!
Mystery Box: Haunted Radio
by John Park
Bluetooth controlled, temperature sensing Formula E racer!
My Mini Race Car
by John Park
Build this powerful RF Feather-based controller to wirelessly trigger props, lights, effects, and more!
Remote Effects Trigger Box
by John Park
Use a high-voltage AC power source to trigger a Feather microcontroller-driven coffee grinder.
Coffee Detonator: The TNT Plunger Grinder
by John Park
Astound people with a mystery box that will reveal secrets hidden behind its transforming panels!
Mystery Box: Shutterglass Chamber
by John Park
The powerful, 32-bit, Bluetooth enabled, three-layer robot of the future!
CurieBot: Arduino 101 Mini Robot Rover
by John Park
Build an inexpensive, collapsable photo light stage for beautiful project photography
Photo Light Box
by John Park
Build a huge timer for an event or race. It's a digital segment display made from RGB NeoPixels!
Ninja Timer: Giant 7-Segment Display
by John Park
Level shifters are like little bilingual translators for your electronics!
Level Shifting 3.3V microcontrollers and NeoPixels
by John Park
This Cold War-era mystery box's disarm code must be toggled in before the timer reaches zero!
Mystery Box: Crypto Countdown Case
by John Park
Part 3: Permanent circuit, 3D printing, and final assembly
Overwatch Prop Gun: Lucio's Blaster Pt. 3
by John Park
When this deck of cards is tossed in the air, it reveals a secret audible Morse code message.
Mystery Box: The Freefall Deck
by John Park
Build your own locking mystery box which can only be opened with a magnet in just the right place!
Mystery Box: The Nautical Crate
by John Park
Part 2: Lights, music, and sound effects prop circuit integration
Overwatch Prop Gun: Lucio's Blaster Pt. 2
by John Park
Lights, music, and sound effects prop circuit design
Overwatch Prop Gun: Lucio's Blaster Pt. 1
by John Park
Create beautiful, expressive light paintings using the Circuit Playground for long exposure photography.
Light Paintbrush with Circuit Playground
by John Park
Use this Python script to enable artist-friendly NeoPixel animation on Circuit Playground
NeoAnim: Using Bitmaps to Animate NeoPixels on Circuit Playground
by John Park
Add motion triggered sound and light effects to any prop with Circuit Playground
Sword & Wand Prop Effects with Circuit Playground
by John Park