Photo Interrupter Breakout
£1.86
A simple breakout PCB for the GP1A57HR photo interrupter.
This PCB has three connections for PWR, GND, and Signal.
Details
When the gate is clear, SIG will be high (>4.9V).
When the gate is blocked by a finger, writing utensil, food pellet, or anything else - SIG will go low (<0.4V).