Embedded Journeys

Raspberry Pi + HC-SR04 Ultrasonic Distance Sensor: Wiring, Code and Accuracy Tips

Exploring how the HC-SR04 ultrasonic sensor measures distance using sound, and how to wire and program it on a Raspberry Pi.

Learn how to use the HC-SR04 ultrasonic sensor with a Raspberry Pi, including wiring diagram, python code and oscilloscope measurements for distance sensing.

Posted by Steven De Bock on Monday, November 10, 2025

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I love making little machines tick—especially the smaller ones! The smaller they are, the cooler they get.

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