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 ...

It seemed that most multifunction shields don’t have their pins of the seven-segment LED display module trimmed enough. They will likely come into contact with the top of Arduino’s USB connector.

Inside the boxy blue base is an Arduino Nano, a DS3231 real-time clock ... We love the way this clock celebrates the seven-segment display, and only wish it were much bigger.

When [Rodrigo Feliciano] realized that the reason his seven-segment LED wall clock wasn’t working was because the original TG1508D5V5 controller was fried, he had a decision to make. He could ...