Knock'n Arduino Shield
The device contains:
- Breakout of all I/O
- 1x Dry Contact relay allowing you to drive custom voltages up to 4 amps
- 1x Screw terminal pair for easy piezo hookup
- 1x Momentary program button
- 2x indicator lights
Compatible with standard UNO and Mega hardware!
This board is built around a modified version of Steve Hoefers Instructable.
The modified code can be downloaded here.
What Piezo Do you recommend?
Where is the code?