Showing posts with label Programmable secret knock box made with an Arduino. Show all posts
Showing posts with label Programmable secret knock box made with an Arduino. Show all posts
Secret-Knock Box
Programmable secret knock box made with an Arduino, and piezo buzzer. The original code was written by Steve Hoefer for the Secret-Knock Gumball Machine in Make volume 25, I had to change it slightly.
