Semi-Automatic Water Level Controller Circuit Project Using 555 Timer With Indicator. Manual On and auto off.
A semi-automatic water level controller circuit is used for automatically controlling the level of water in a tank and avoid overflowing. This circuit is made up of a sensor, timer chip, relay, pump driver and power supply. The sensor senses the water level in the tank and converts it to voltage. The timer chip takes care of sensing voltage from sensor and turns ON/OFF pump driver accordingly.