Rain Detector


Posted on Apr 27, 2012

This circuit uses a sensor made of a small piece of etched PC board and a simple SCR circuit to detect rain and sound a buzzer. The SCR could also be used to activate a relay, turn on a lamp, or send a signal to a security system.


Rain Detector
Click here to download the full size of the above Circuit.

# The sensor is a small piece of PC board etched to the pattern showen in the schematic. The traces should be very close to each other, but never touching. A large spiral pattern would also work. # Make sure to use a loud buzzer.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Self-powered Doorbell
Audible Milliohmmeter with 555
Fish Tank Lights and Temperature Detector
5W RF power amplifier
alternating square pulse generator
Fluid level control schematic diagrams
One second Audible Clock Circuit Schematic
MFOS Micro-Sample & Hold circuit
Practical Method for Production of Water Fuel with Piezoelectric



Top