![]() This sensor is very simple, so it can be made with very few parts. This happens because the sensor portion on the PCB is made out of 10 conducting plates, 5 of which are power tracks and 5 others are the sensor tracks. This phenomenon is directly proportional to the output voltage. ![]() As you can see when the drop of water falls inside the glass, the water level rises and the voltage on the output pin also rises. The above Gif shows the working of the water level sensor in action. When the water reaches a certain level the conductivity between the two plates changes, and by measuring the changes we can measure the water level. The PCB is made out of long conductive plates. The working of the water level sensor is pretty simple and easy to understand. OUT is the Analog output pin of the board that will give us an analog signal in between VCC and ground. GND is the ground pin of the board and it should be connected to the ground pin of the Arduino. VCC is the power supply pin of the Rain Detection Sensor that can be connected to 5V of the supply. The pinout of the water level sensor is given below: The water level sensor has three pins, runs on 5V power, and gives out the data in analog format. The working principle of the water level sensor module is very similar to that of a Rain Sensor. So without further ado, let's get right into it. So in this tutorial, we are going to interface a water level sensor with Arduino to measure the water level and in the process, we will let you know the details about this sensor and its working. Water tank overflow is a common problem that results in water wastage, and it's surprising to note that it's not even considered a concern in many households. Though there are many solutions for it like ball valves that automatically cut the flow of water when a certain level is reached but as an electronic engineer, I prefer a solution that includes sensors and automation. ![]()
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