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Build a Motion Security Chime with an Arduino Nano
I
IoTSim Editor
Oct 3, 2026

Build a Motion Security Chime with an Arduino Nano

Build a compact perimeter intruder alarm and entrance chime with the Arduino Nano V3. Interface an HC-SR501 PIR motion sensor, an SPDT arming slide switch, and a dual-tone piezo sounder with serial status logging.
Arduino NanoPIR Motion Sensor +2