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The goal is now to use a pre-wired rain sensor module with an Arduino. ... (hook up diagram) As usual, power up the Arduino from an external 9V DC power supply unit. The buzzer/relay driver circuit ...
Interfacing IR Sensor Module with Arduino. Build Time: 2-4 hours. | Cost: $5-10. | Difficulty: suitable for beginners. What You'll Learn: You will learn to handle digital input/output, interface an IR ...
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