The sensor uses high quality FR-04 double-sided materials, large area of 5.0 * 4.0CM, and nickel-plated surface, with oxidation resistance, conductivity, and life expectancy superior performance Comparator output, the signal clean, good waveform, strong driving ability, more than 15mA The raindrop board and the control board are separate, easy to lead the lineTTL level output, TTL output valid signal is low. Drive capacity of about 100MA, direct drive relays, buzzers, small fans, and so on. Adjust sensitivity by potentiometer When connected to a 5V power supply , power indicator light, no water droplets on-board sensors , DO output is high, switch lights off, drop a drop of water , DO output is low, the switch indicator lightBrush above water droplets, has returned to output high stateAO analog output can be connected to the microcontroller AD port to detect drops in the above rainfall sizeDO TTL digital outputs can also be connected to the microcontroller to detect whether there is rain . Features:Power indicator, output signal LED indicatorNo rain when the LED light output is high, the raindrop up, the output level, LED light.Large area raindrops, more conducive to the detection of rain.Board with positioning holes for everyone to installVoltage: 5VControl board board size: 3 * 1.6 MMLarge area raindrop test board 5.4 * 4.0 MM Wiring:VCC: positive power supply (3-5V)GND: power supply is negativeDO: TTL switching signal outputAO: analog signal output
