I ve got two HC-SR04 ultrasonic sensor. I am trying make a radar with that but before, I ve faced with a problem. When there is an stable object(simply a wall) sensor's output is changing. Actually it gives values more than its range. Its range is 400cm but sensor returns 2995 even thought there is …

HC-SR04 Ultrasonic gives big numbers

knut_ny April 17, 2018, 11:02am 2

code isn't complete. Which library?
Try a short delay between readings

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