Segment Pins (A-G) are connected to Arduino pins 2-8. Digit Control Pins are connected to Arduino pins 9-12. Push Buttons are connected to Arduino pins 13 (Hour) and 14 (Minute) with one side to ...

Circuit description Heart of the project is IC MAX7219 - U2 . It is driver for seven segments numeric LED display and is able to energize 8 digits by time multiplex. Display segments “a” to “f”, are ...

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 ...