Microcontroller-Based Water Level Indicator

This project is useful for those who have a big water storage tank on the rooftop and use a powered motor to fill it with ground water. This circuit will indicate you when the tank is about to full. It uses a PIC12F683 microcontroller as a controller and copper probes to sense the water level.

The circuit operates on 4.5V (3 AA batteries) and the PIC controller works in sleeping mode that extends the battery life.

Source:http://www.bobhobby.com/2008/01/27/water-level-detector-with-pic12f683/

Here is the link of

Software.