I have AJ-SR04M sensor connected to ESP8266, I use it to measure the level of water. The sensor is fixed on the top on cylinderical vessel (at distance 22cm above vessal top end) the size of vessel is 30cm diameter, 28cm height. The problem that the reading of sensor is unstable.If any one could advice me to solution for this problem? Knowing that the reading is flactuate from 18 to 45 cm.
– best regards