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John Park’s Mystery Box: Crypto Countdown Case @adafruit #adafruit @johnedgarpark

Build your own Cold War-era countdown timer prop with John Park’s Mystery Box: Crypto Countdown Case learning guide. This mystery box is a Soviet themed launch-code box complete with missile switch covered toggles, a Feather microcontroller with red 14-segment display, and stress-inducing piezo buzzer. Use it for an escape room, prop, or wedding proposal. Your players, or potential spouse-to-be, will need to enter the correct five-switch sequence to defuse the device before all is lost. (Note: this project is a harmless prop, not an actual bomb.) Customize it with your own secret message.  

John Park’s Coffee Detonator @adafruit @johnedgarpark #adafruit

Use a high-voltage AC power source to trigger a Feather microcontroller-driven coffee grinder. This guide will show you how a magneto, generator, or other AC power source can be safely converted into a small DC signal easily read by an Arduino-compatible microcontroller. Then, the microcontroller can trigger a 120V relay to turn on any AC device or appliance, such as a coffee grinder, blender, lamp, or pump.  

John Park’s Remote Effects Trigger Box @adafruit @johnedgarpark #adafruit

Build this powerful RF Feather-based controller to wirelessly trigger props, lights, effects, and more! Using 900Mhz (or 425Mhz) RF for long-range, encrypted communications between the transmitter and the receivers, this general purpose controller will make your wireless triggering wishes come true! Plus, you get to use a rotary encoder knob to scroll menu sets, and punch in your commands on the lighted 4×4 Trellis keypad.  

My Mini Race Car Kit @adafruit #adafruit @johnedgarpark #MyMiniRaceCar

Zooooom! Now you can build and drive your own Mini Race Car using the Feather 32u4 Bluefruit LE microcontroller. Keep an eye on racetrack telemetry with the included HTU21D-F temperature & humidity sensor breakout board.   We partnered with our good friends at Digi-Key and TE Connectivity for this project pack. Check out digikey.com/racing for more info on all the fun efforts Adafruit, Digi-Key, and TE are teaming up on!  

Circuit Playground Express Light Paintbrush with MakeCode @adafruit @johnedgarpark #adafruit

Now, with MakeCode on Circuit Playground Express! Paint with light using the Circuit Playground Light Paint Brush for long exposure photography. Tilt the brush to change colors using the on-board accelerometer.   Streaks of colorful light, suspended in midair — ever since people began to capture images on film we have had a fascination with light painting and light drawing. By simply moving a light source in front of an open shutter, motion over time could be captured on camera.  

John Park’s Mystery Box: The Freefall Deck with MakeCode @adafruit @johnedgarpark #adafruit

Perfect for escape rooms, magic tricks, and other mysterious events — this seemingly innocuous, sealed deck of cards contains a secret. When the puzzle is solved, the deck is thrown in the air, tossed to a friend, or dropped a short distance. Freefall is detected by the Circuit Playground embedded within, and it beeps a secret Morse code message.  

John Park’s Mystery Box: The Haunted Radio @adafruit @johnedgarpark #adafruit

Breathe spooky life into an old radio by adding a Feather microcontroller to read the dial and play mysterious sounds and music! Here’s how you can repurpose a vintage radio as an eerie playback device that uses the original tuner dial, power knob, and speake, then grafts on a Feather ESP8266 Huzzah with Music Maker MP3 FeatherWing to play creepy sound effects, and trigger a specific song when intrepid guests tune the dial to a specific frequency, tripping the Hall effect sensor.  

John Park’s Metro Minimalist Clock @adafruit @johnedgarpark #adafruit

What time is it? Metro Mini time! Build this stylish, minimalist clock. It’s a clock made of love. And a Metro mini, a real time clock module, and a 7-segment display backpack. You can build it on a breadboard, solder it to a perma proto board, or, go for a minimalist “dead bug” air wiring method using header strips. Then, mount it to anything you like, such as the hardwood floor scrap seen here.  

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