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Description

Voltage: 5V
Power indicator light, the output signal LED indicating lamp.
TTL level output, TTL output signal is low. The driving ability is about 100MA, directly drive relay, buzzer, small fan, etc.
The sensitivity can be regulated through a potentiometer
when no rain, the LED light output is high, the rain sound, output level, LED light.
The raindrop board and the control board are separate, convenient wire
Large area raindrop board is more conducive to detect the rain
The board has positioning holes to facilitate installation
Control panel board size: 3*1.6 MM
Raindrop detection plate: 5.4*4.0 MM

Method
Connect the 5V power supply light, but no water induction plate, DO outputs high level, the switch lights out, drop a drop of water, the DO output is low, the switch indicator light,
Brush off the water, and returned to the state, the output high level
AO analog output, it can be connected with the MCU AD port inspection on the size of rainfall.
DO TTL digital output can be connected with the singlechip to detect whether the rain.

Shipping list
1* raindrop sensor board

1* control board