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• 03:32, 27 August 2026 CogWikiEditor talk contribs created page IDPL - 15: IoT-Based Small Project (Created page with "== IDPL - 9A: Distance Measurement Using Arduino Uno and Ultrasonic Sensor == === Objective === To interface an '''ultrasonic sensor''' with an '''Arduino Uno''' and measure the distance of an object from the sensor. === Required Components === * Arduino Uno * HC-SR04 ultrasonic sensor * USB cable * Jumper wires === Circuit Diagram === <!-- IMAGE PLACEHOLDER: Suggested image: Circuit diagram showing Arduino Uno connected to an HC-SR04 ultrasonic sensor. Show: * HC-...")