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 ...

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 ...