This is a simple 0 to 9 counter circuit constructed using Arduino! Here, a common cathode 7-segment LED display is connected to Arduino for displaying the. Aspencore network. ... Push Switch (S1) ...

The main difference was that you had to press the switch when the ball was on the last led of your side, ... and I was inspired to build a project based on your 1D LED pong, Arduino-style project.