Hi! I use an ultrasonic distance sensor hc-sr04 to display distance on an i2c lcd monitor, in general the business works fine but at certain distances it displays not so correct numbers. For example in the picture above he brings the number 1198 at a distance of 30 cm from the wall. This lie happen…

Errors in hc-sr04 sensor readings

Paul_KD7HB August 24, 2021, 4:35pm 4

The shape and material make a huge difference.
Paul

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