Here is a simple, yet useful circuit of an Arduino 4-digit 7-segment LED display unit. The module used here is a self-contained, compact common-cathode module containing four 7-segment LED numeric ...

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, we ...

Arduino Camping LED Light. February 12, 2014 by T.K. Hareendran Comments 9. Advertisement. Here is a simple Arduino Camping Light project. In this design, only one push button switch is used to ...