I had a go at this concept as well, over a decade ago [1]. I used rubber bands to collect energy from the mechanical movement so the gate could be reset, but th

I had a go at this concept as well, over a decade ago [1]. I used rubber bands to collect energy from the mechanical movement so the gate could be reset, but this would ostensibly require larger and larger forces to operate more complex gate architectures. 1. https://keshav.is/building/lego-logic-gates/ https://keshav.is/building/lego-logic-gates/