Semi-Automatic Water Level Controller Circuit Project Using 555 Timer With Indicator. Manual On and auto off.
This is a very simple water controller circuit built using the popular 555 timer ic. It is called as semi-automatic water level controller because we have to manually switch on the circuit and it will turn off the water pump automatically once the level of water touches the contact type sensor placed at the top of of the water tank. Instead of using contact type sensors, we can also use magnetic float switches.