8_Water_Level_Controller

Water Level Controller

This is the 8th project for Kids. Kids will understand the working of SR04 , distance sensor with Arduino.

SR04 ultrasonic distance sensor consist of two ultrasonic transducers. One transducer works as a transmeter convert electrical signal into 40 Khz ultrasonic sound pulses. The receiver receive the transmitted pulses. With this sensor we can know the distance of the filled water as frequency and time of the pulse is known.

This sensor works from 2 c.m to 400 c.m.and working voltage is 5 volts. In Water level controller this sensor is placed upper portion of the tank. Measure two distances from the sensor :

Higher level – HL_Up to which the tank has to be filled.>/li>

Lower Level–LL_ Minimum level of the tank, where the pump should start to fill the water

Now in the program from LL to HL the pin voltage of the arduino we will do high to switch on the pump . At HL distance the pin voltage will do low to switch off the pump.

At HL distance we will do other pin of the arduino high to switch on the bell.