By Boris Landoni on October 2, 2023
This monitoring device is useful for keeping track of the liquid level (such as water) inside tanks, reservoirs, and containers. It features seven inputs (to connect electrodes) that can be positioned inside the tank. Each electrode is associated with a corresponding LED that lights up when the liquid reaches the desired level (i.e., the electrode).
The core of the device is the ULN2003 integrated circuit, a versatile and robust line