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 ...

The four servos are controlled by an Arduino – each digit changing one at a time to reduce current consumption – and a magnet and reed switch was added to each digit so the numbers could be ...

We like this clock, as it’s different from the norm in Arduino clocks. It’s not however the first flip dot clock we’ve seen, this one has a full dot matrix display.

This project uses an IC PCF1175CT, specialized for clock applications. PCF1175CT is a single chip, 4.19MHz CMOS clock circuit providing hour and minute functions with 12-hour or 24-hour mode. It is ...