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How To MacGyver A Laser Tripwire Using Arduino
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Hilitchi 40Pcs Mini Laser Dot Diode Module Head WL Red 650nm 6mm 5V 5mW and 3V 5mW and Light Dependent Resistor LDR Sensor 5 mm GM5539 5539: Amazon.com: Industrial & Scientific
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JavaScript: Laser Intrusion Detection with Johnny-Five on Node.js - javascript robotics, johnny-five, microprocessor, nodebots, tutorial, web connected devices - Bocoup
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