This is an oldie, but oh, man is this ever good. It’s a Nixie clock made without a microcontroller. In fact, there aren’t any logic chips in this circuit, either. As far as we can tell, the logic in ...

The project is a mere replication of the counting circuit used in Iron Man 2 by Ivan Vanko during his escape in Mexico Prison. To achieve the goals of the project, the combination of 555 timers, 7400 ...