Voltage: 5V
Power indicator, the output signal LED.
TTL-level output, TTL output valid signal is low. About drive capacity 100MA, can directly drive relays, buzzers, small fan, and so on.
Its sensitivity can be adjusted via potentiometer.
Raindrops on board and the control board are separate, easy to wire leads.
A large area of raindrops board, more conducive detected rain.
Board with positioning holes to facilitate installation.
Dashboard Size: 3 * 1.6 MM
Large raindrop detection plate 5.4 * 4.0 MM
Usage:
Connect 5V power supply, the power light is on. When the sensor board did not drop, DO output is high, switch light off; drop on a drop of water, DO output is low, the switch indicator light,
Remove water droplets above, has returned to output high state.
AO analog output can be connected to the microcontroller AD port to detect drops in rainfall above size.
DO TTL digital outputs can also be connected to the microcontroller to detect whether there is rain.
