ABOUT ULTRASONIC LEVEL SENSOR

Take note The sensor provides a working voltage number of 3 to 5V and employs around 20mA of existing. So, you'll be able to feed the sensor which has a 3.3V Arduino pin.Established the multimeter to DC voltage measurement mode and measure the sensor’s S pin voltage in relation to Gnd (definitely, in the event the sensor is dry, it ought to be ze