HC SR04 Ultrasonic Range Sensor on the Raspberry Pi

HC-SR04 Ultrasonic Range Sensor on the Raspberry Pi

In previous tutorials we’ve outlined temperature sensing, PIR motion controllers and buttons and switches, all of which can plug directly into the Raspberry Pi’s GPIO ports. The HC-SR04 ultrasonic range finder is very simple to use, however the signal it outputs needs to be converted from 5V to 3.3V so as not to damage our […]

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