I’d figured out how to solve Challenge 129 “theoretically”- I had a diagram that would work with equivalent electronic components, but was having trouble with the sprocket levels. I couldn’t figure out how to link the components without using a second switch. I looked at the solution after being stuck a few hours, and felt like a dolt. Here’s a third hint for anyone else stuck trying to wire up the transistor paths.
Have you tried coupling a junction on the outside of a loop?
The little idiosyncracies in Spintronics which don’t exist in electronics are super fascinating from a puzzle standpoint. I was stuck on the fact that…
The junction, being a part itself, can be coupled against- meaning that an electronic diagram which would solve this challenge can’t be converted into a spintronic one directly.