Pin 12 reads LOW → button press detected. - LOW → button at (row, c) is pressed. - HIGH → button at (row, c) is not pressed. c. Set COL[c] back to INPUT (Hi-Z). 3. Repeat at scan interval (20 ms).

Hi, my name is Rahmat Hidayat. I code for fun and sometimes share my code here so I can reuse it later. Feel free to use or modify this project. If you need help setting it up, follow this tutorial.

Electronic, Arduino enthusiasts and makers looking for a project to keep them busy this weekend, may be interested in a cool custom switch created by Dave Darko. That requires users to intermittently ...