Questions, 4 of 3 (Told ya!)
I want to use a piezo knock sensor so I can tap on the glass and turn the lights on without breaking the door seal. Can I mount the piezo anywhere in the cabinet, or does it need to be on the door.
There are 14 millions piezo sensor tutorials on the web, but every one of them starts with "What's an Arduino?" and and ends with the piezo plugged into a breadboard. Nobody explains the mechanical considerations.
55/N