It’s built on an ATmega88 chip, and includes a programming header, reset button, a couple of filtering ... allowing it to be used in a breadboard or DIP socket. You can see a walk through ...

Jumperless is a jumperless breadboard with multicolored LED visualization of signals in real-time. Sounds like magic? This beautifully executed entry to the 2023 Hackaday Prize by [Kevin Santo ...