The 7-segment display certainly is a popular build, and surprisingly people still come up with new takes on this over a hundred-year-old way to represent numbers. This time [jegatheesan.soundarapan… ...

Though [Connor] labels it as a work in progress, we’re pretty impressed with how polished his transparent 7-segment display looks. It’s also deceptively simple. The build uses a stack o… ...

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 ...

If we put in the sockets four 7-segments LED common cathode LCD display devices, we should connect the pin 33 of the board (the common pin) to the Arduino GND signal. At this point, all works fine ...