SparkFun Photo Interrupter Breakout Board - GP1A57HRJ00F Infrared Power Packs This is not a true

This is not a true piezoelectric speaker but behaves similarly

and as a trigger for reed switches

35K ohm max (18K ohm typical) series resistance

Before you can get your set-top box on the internet

1x Vertical Surface J-Hook Buckle

SparkFun Photo Interrupter Breakout Board - GP1A57HRJ00F Infrared Power Packs This is not a trueA simple breakout PCB for the GP1A57HR photo interrupter. This PCB has three connections for PWR, GND, and Signal. 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 220? (330?, works as well) current limiting resistor are listed below. Documents: Schematic