Posted in Arduino Hacks, clock hacks Tagged 7 segment LED display, arduino, DS3231 RTC, leds, single digit clock Post navigation ← Classic Leica Film Camera Turns Digital ...

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 ...

This presented a problem, as [Frugha] wanted to control the clock with a single Arduino Nano. ... With 4*7+2 = 30 units you can make a 4-digit 7-segment clock. Report comment. Reply.