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Crossed Beam Photogate Breadboard Kit, unassembled

CBP-O/F

 

The kit comes unassembled. Assembly instructions are here.

 

The view below shows an assembled crossed-beam photogate triggering on the passage of a tufted titmouse. Flash units (not provided) are positioned to either side of the gate.

 

Click on the photo for a larger view.

 

crossed-beam photogate frame

 

The photo below shows the circuit used to detect the passage of an object through the center of the gate.

 

crossed-beam photogate circuit

 

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