SparkFun Photo Interrupter Breakout Board - GP1A57HRJ00F Infrared Power Packs and as a trigger for

and as a trigger for reed switches

video phone and vehicle rear view etc

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

SparkFun Photo Interrupter Breakout Board - GP1A57HRJ00F Infrared Power Packs and as a trigger forA 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