Rain sensor

Product description:Voltage: 5VPower indicator light, the output signal is LED indicating lampTTL level output, TTL output signal for low level drive capacity of around 100MA, and it can directly drive the relay, buzzer, small fan etcSensitivity adjust via potentiometerWhen no rain, the LED light output high level, when raining, the output ground level,  then LED is brightThe raining board and the control board is separate, convenient to rise the wire.Large area of the board is more conducive to detect the rain.The board is equipped with a positioning hole to facilitate installationSize: 3*1.6 MMA large area of raindrop detection board 5.4*4.0 MMThe method of usageConnected to 5V power supply, the light will bright, when induction board has not rain drop, DO output is high, and the switch indication lamp is off, when dropping a little water, DO output is low, the switch indicator will brightBrush off the water droplets, and restored to the state, output high levelAnalog AO output, can be connected to the MCU AD port detection of drops in the above amount of rainfall.DO TTL digital output also can be connected with the MCU to detect whether there is rain.Shipping list1) 1* raindrop induction board and 1* control board 2) 5* 20cm DuPont lines3) Provide download address (schematic + test procedures)