He used an Arduino, and multiplexed RGB LEDs with some digital potentiometers to create a color mixing keypad. Since we couldn’t fit the complete 4×4 keypad into a standard 2 gang wall box ...

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 ...

If you want to add a keypad to your Arduino project, the options are pretty ... Future plans include an LED to indicate when shift is pressed, and adding the special characters next to the numbers ...

You can fade out and fade in the light of an LED automatically by using Arduino and a simple code that is described below. Even though the Arduino board cannot output variable voltage on its digital ...

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 ...