Maybe I'm biting off more than I can chew, but let's see what my options are.
I'm making a pachinko type game. It will use bottle caps for the dropped object (can switch to 1.25" washer for weight if that helps).
Every time it hits a peg, I want an LED on the end of the peg to flash.
Pegs will be #8 machine bolts, and any wiring will have to go under the bolts or behind the backboard.
My background in this is that I aced a DC electronics class 30 years ago, but can learn new stuff pretty quickly.
What kind of sensor am I looking for?
Any help on how to do this or to warn me that this is too difficult would be appreciated.
Best Answer
Can you make the backplate conductive and isolate the bolts? That would make it a simple continuity test.
Figure 1. A sensitive touch switch could be made as shown. Electrical contact between the washer and the screw would indicate contact.
A metal back-board would eliminate a considerable amount of wiring and assembly as only one wire would connect all the "washers".