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Created March 28, 2012
Last modified March 28, 2012
Tags microcontroller   pcb-design   phototransistor  


Not provided.


A simple light curtain made of three identical PCBs with various populated components.

Further described on the Electrical Engineering Stackexchange at Sensor for detecting airsoft bullet.

Note: This design is intended to detect objects to time physics experiments, not machine safety, and should not be considered a substitute for real light curtains.


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