| Created by |
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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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