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How to build an optical/light barrier with the Arduino, the Keyes laser module (KY-008) and a laser receiver/detector module - Michael Schoeffler
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How to build an optical/light barrier with the Arduino, the Keyes laser module (KY-008) and a laser receiver/detector module - Michael Schoeffler
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Icstation KY-008 Laser Transmitter 5mW 650nm Red Dot Laser Diode Module for Arduino (Pack of 10): Amazon.com: Industrial & Scientific
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