John Park’s Secret Hollow Book Intrusion Detector @adafruit @johnedgarpark #adafruit

Build your own safe hidden in plain sight to store valuables — and rig up an intrusion detector that uses a Circuit Playground Express programmed with MakeCode. Visit the Adafruit shop online – http://www.adafruit.com Adafruit on Instagram: https://www.instagram.com/adafruit —————————————– LIVE CHAT IS HERE! http://adafru.it/discord Subscribe…