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).

NOTE: This example depends on the configuration shown in image below: Library depends upon the initialization of matrix_config() in src - delcared as a prototype in button_matrix.h matrix_config() ...

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 ...