Pulse Reading from Coin slot to Arduino

Coin Slots - Body Mods by Shawn ear coin slot COIN SLOT MOD ear coin slot Well, it's just a little slit in your ear that can hold multiple rings It's called a Coinslot because it's like the shape of a coinslot in a vending machine

book gre slot Fresh #coinslot on @joakimaskag of @adorebodypiercing that I performed at