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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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KY-008 3pin 650nm Red Laser Transmitter Dot Diode Copper Head Module for arduino DIY Kit - ASK Electronics
![How to build an optical/light barrier with the Arduino, the Keyes laser module (KY-008) and a laser receiver/detector module - Michael Schoeffler How to build an optical/light barrier with the Arduino, the Keyes laser module (KY-008) and a laser receiver/detector module - Michael Schoeffler](https://mschoeffler.com/wp-content/uploads/2017/01/Laser_detector_schematic.jpg)
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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