Water Sensor is an easy-to-use, cost-effective water level water droplet recognition detection sensor. It measures the water level by measuring the amount of water droplets / water through the exposed parallel wire traces of the-series. The conversion of water quantity to analog signal is easily completed, and the output analog value can be directly read by the development board to achieve the effect of water level alarm.
Working principle:
The parallel exposed wires are divided into two groups, A and B. The wires of the same group are connected, and the current flows from B through the conduction of the liquid to A. The exposed wires can sense whether there is liquid and the liquid in contact with it. The magnitude of the quantity, the larger the quantity, the larger the current passing through the wire and finally reaching the loop, and the triode is converted into a corresponding analog signal output. By reading the output analog signal through an external system, you can know the corresponding level change.
Parameter:
Working voltage: DC3-5V
Working current: less than 20mA
Sensor type: Analog
Detection area: 40mm x 16mm
Pin definition:
+: Pin is connected to power VCC
-: Pin is connected to power GND
S: The pin analog signal output can be connected to the AD converter or the AD conversion pin of the microcontroller
