Raindrops module / sensor rain module / ...

The baby description

Voltage: 5 v
LED lamp power light, the output signal.
TTL level output, TTL output valid signal for low level. The drive ability about 100 ma, can directly drive The relay, buzzer, small fan, and so on.
Sensitivity can be adjusted through the potentiometer
No rain when the LED light output is high, the rain, the output level, the LED light.
Raindrops board and control board is separate, work to wire leads.
The raindrops plates of large area, more conducive to detect The rain.
Board with hole, the work of the installation
The Control panel board size: 3 * 1.6 MM
Large rain test plate is 5.4 * 4.0 MM

Two methods of use

Connected to 5 v power supply power towns, no water droplets on induction plate, the DO output high level, the switch indicator light out, drop a drop of water on, the DO output for the low level, the switch light is lit,
Brush off the droplets of water, again to return to, the output high level...
AO analog output, which can be connected to the microcontroller AD expressions using drops of rainfall in the above size.
DO TTL digital output also can connect to the single chip microcomputer detect been there is rain.