1976 – Entropy – Gene Oldfield (American)

ENTROPY— BUILDING A ROBOT FROM SCRATCH Gene Oldfield, began building his first major homebrew robot around 1976. Entropy, as it was called, was a mobile, three-wheeled robot powered by a car battery. A KIM single-board computer was interfaced to the sensors and relays by only seven microchips, which means that most of the processing was …

1984 – Moth , a light-seeking robot – Gene Oldfield (American)

Extract from the book "Everyone Can Build a Robot Book " by Gene Oldfield and Kendra Bonnet, 1984. "The concept behind the Moth is very simple. When you turn on the robot in a  dark room, the photocells have a high resistance rate that blocks the flow of electricity. The Moth does  not move. When …