@RueNahcMohr rue, you need to understand that there's a difference between something being technically possible and something being feasible.
The only municipal e-waste dropoff site around here is only open from like 9-4 Monday through Thursday, and it's about ten miles from my house.
I'm not going to go all the way over there to see if they have junk that I can bring home, open up, and look for optoisolators inside, then take all the way back to the e-waste dropoff site to get rid of -- just so i can try an experimental circuit you showed me on the internet.
@MLE_online I know, and I sort of wish I could prove it (tho it doesn't matter) but I'm sure on your bike trips you have encountered multiple e-waste things that would have almost everything you need in them.
It may not seem like it, but I do understand your position.
@MLE_online I dont know which bike is your daily driver, dont have you a thing that would fit a dvd player on it?
wait, I feel like I'm pushing now, is this just postulation?