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How to use ultrasonic sensor with Arduino

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  • 26 2021-07
    How to use ultrasonic sensor with Arduino?
    Introduction of HC-SR04HC-SR04 is a very popular sensor for measuring distance. It emits ultrasonic waves at a frequency of 40KHz. The ultrasonic waves travel through the air. If there are objects or obstacles in the path, it will bounce back to the module. Taking into account the propagation time a
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