This project circuit helps to detect and control the water level in an overhead tank or container. Here, we use 8051 microcontroller. This is an interesting and very useful project in our real life.

[Bob] was having trouble keeping up with his water troughs. He had to constantly check them to make sure they weren’t empty, and he always found that the water level was lower than he thought. He ...

Now, the water level begins to decrease and the shorter sensor will be no longer in contact with the water, but IC1C output will be hold high by the signal return to pin #5 of IC1B, so the pump will ...

Here's an extremely simple water-level maintainer that keeps the water level between two predefined levels (see the figure). Due to the high input impedance of the LM311 IC (U1), practically no ...