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I have a problem with the ultrasonic sensor JSN-SR04T: It should measure the water level in a cistern. Basically, that works very well. The values are delivered cleanly to my server every 60 seconds. However, the value freezes again and again if it measures the same or a similar distance longer. He then stays e.g. hang at 21 cm and the value changes only when I take it out of the cistern and e. change to 40 cm. Does anyone have an idea what it can be? I have the sensor with the parameters "Position - HC-SR04, RCW-0001, etc." integrated via ESpeasy.
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