Rain Detector

Step 3 Test It!

Sprinkle some salt in the bottom of the cup. This will improve the conductivity of the water. Then put a small amount of water in the cup, just enough to cover the bottom. That should complete the circuit and the light should turn on. If not, then go back and check the connections. Once it works, you can extend the wires and run the cup outside and have yourself a handy little rain detector.

Comments

[puneet sidhwani]

itz a gud model.............. bla bla