Here is a simple, yet useful circuit of an Arduino 4-digit 7-segment LED display ... on at once (the numeral 8), the current demand will exceed this 40 mA limit. The image shown below indicates the ...

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 ...