connect to the row R1-R4 pinouts of the keypad byte colPins[COLS] = {2, 3, 4}; //connect to the column C1-C3 pinouts of the keypad Next is a project example, where the Arduino is instructed to do ...

Isn’t it time for a full Arduino-compatible keyboard? [ELECTRONOOBS] thinks so. This 41-button Arduino keyboard PCB is a stepping stone to his next project, a pair of two-way texting machines.

To learn more about the JC Pro Macro 2 mechanical keypad kit project watch the promotional video below. “Programming and customization are via the Arduino IDE, and it can theoretically run QMK ...