Wednesday, March 21, 2012 by skemarangkaian
circuit of rain detector 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.
Component list of rain detector
- R1 1K 1/4 W Resistor
- R2 680 Ohm 1/4 W Resistor
- D1 1N4001 Silicon Diode
- BZ1 12V Buzzer
- S1 SPST Switch
- SCR1 C106B1 SCR 106CY
Make sure to use a loud buzzer.