Vidyarthiplus (V+) - Indian Students Online Education Forum

This is the Basic Circuit Diagram of this concept... We can Extend it with LCD Display and Microcontroller to view the accurate result....

[attachment=11874]

Components required :
Power supply
Resistors ¼ watt (1kΩ; 150kΩ)
Light depended resistor (LDR)
Transistor BC547
Buzzer 6V
Transparent flexible plastic tube

Guys Do it.. And Post here your outputs..

Co0l..Bro...
Am ITian! am not good with circuits...I taught tis idea so shared....

@Srini why led and ldr placed inside the water?