A simple breakout PCB for the GP1A57HR photo interrupter. This PCB has three connections for PWR, GND, and Signal.
Now with added M3 Mounting holes and in a fetching black with gold pads!
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).
Assembled picture is for reference only, board comes bare; photo interrupter and the 220O (330O, works as well) current limiting resistor are listed below.
Want this with the sensor, 220 Ohm resistor and 3 pin male header? get it here.