This interesting digital counter with relays with complementary outputs was found in the Radio Electronics magazine of October 1961. The supply voltage is in accordance with the relays used.
If the reader has an old MSX still working, it can be used as a microcontroller for your robotics...
This circuit was found in a 1993 Electronics Hobbyst Handbook. The circuit operates in the FM...
In the figure we have the way to simulate an SCR using two complementary general-purpose...