Water Level Monitoring system using transistors/ Water Diyo / Simple Rain Detector

 It is very easy to make water level monitoring system using NPN transistors

Water diyo is also the same with a single transistor

MATERIALS REQUIRED:

1. NPN transistors (BC547 2N2222A)

2. Buzzer and 3 LED's

3. Resistors(100,220,330[Based on power source])

4.Wires

5. 9V battery with battery cap

6. Waterproof box for electronics.

SOME MORE !!!

We can also make rain detector using transistors.

the smallest water droplet ever measured is 0.1 mm in diameter so by keeping the probes 0.1 mm apart we can create a fairly accurate rain detector.

Note**: I forgot to add resistor above.....but if you are using batteries other than coin cell and AA batteries you should add a resistor bu using ohm's law.