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Step 7Add proximity sensor
For this system I only cared about which cat enters, and any creature may exit. Thus, I only needed RFID on one side. The door should open to any animal that approaches from the other side. An IR proximity sensor works well.
Connect the out-pin of a Sharp GP2D12 to Analog port 0, the ground pin to the other grounds and the vcc pin to 5v.
Download IR_test_analog.pde to test this part of the system
Connect the out-pin of a Sharp GP2D12 to Analog port 0, the ground pin to the other grounds and the vcc pin to 5v.
Download IR_test_analog.pde to test this part of the system
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