Low volts simple circuit water detector.

Hello everybody, today I'm going to show you how to make simple circuit water detector. The circuit is very easy to build and use minimal component and works very well.

How the circuit works.
This circuit use transistor to amplifies small current that pass through water to enough current to drive led light without using complex ic.

List of component.
The circuit is very simple and easy to build.
2 transistor bd 139
2 resistor 10kohms, 100 ohms
1 led
2.4 to 6 volts batteries(usb power compatible).
conductive tape.

The video below show test circuit and how it's working and circuit diagram

Water detector schematic diagram.

Water detector wiring diagram.