Here is a simple, yet useful circuit of an Arduino 4-digit 7-segment LED display unit. ... The image shown below indicates the basic wiring diagram of the current limiting resistors and driver ...

Here, a common cathode 7-segment LED display is connected to Arduino for displaying the digits. The code (Arduino sketch) allows push button increment of the counter from 0 to 9. The whole circuit can ...

You can pretty much tell that this is an outstretched hand shown on a large grid of 7-segment displays. But the only reason you have to look twice is because it is a still photo. When you see the v… ...