Introduction: Water Level Detector
Step 1: Sound Signal
find sound signal ( I use Mc'Donalds toy )
Step 2: Wires
prepare wires and open toy
Step 3: Solder
find two switch point and solder wires
Step 4: Holes
make holes for wires, and close the toy
Step 5: Sucker :)
mount handle (sucker)
Step 6: Finish
How this work ?? check video :) Good Luck