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GitHub - alaudet/hcsr04sensor: Python module for measuring distance and depth (metric or imperial) with a Raspberry Pi and HC-SR04 sensor
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Interfacing HC-SR04 Ultrasonic Sensor with Raspberry Pi
Ultrasonic HC-SR04 Sensor Python Library for Raspberry Pi GPIO - bluetin.io
Ultrasonic HC-SR04 Sensor Python Library for Raspberry Pi GPIO - bluetin.io