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An Arduino-Controlled Photogate
The photogate housing was made with plastic (PVC) water pipe parts.
The two photogate electronic circuits are based on an infrared LED and a matching phototransistor.
The photogate circuit and the Arduino board.
The “picket fence” was made with Lego bricks.
The Arduino code for the picket fence experiment.
The graph of distance vs time for an object in free fall.
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