https://www.electrodragon.com/product/water-drop-rain-sensor/

usage

Usage

  • Connected to 5V power supply power lights,
    • When no water droplets, DO output is high and the switch indicator lights off,
    • dropping on a drop of water, DO output is low, the switch indicator lights on,
  • Brush off the the above water droplets, has returned to output to high state.
  • AO analog output can be connected to the MCU AD port to detect the size of the drops in the above rainfall.
  • DO TTL digital outputs can also be connected to the MCU detects whether there is rain.
  • 开关指示 = Switch Indicator
  • 电源指示 = Power Indicator

change log

  • Version V1.1
  • Change the power LDO, may have better stability, move the antenna connectors to the top to fit into case desgin.
  • Version V1.2
  • Add extra logic leveled UART pins 5V and 3v3 for arduino or raspberry pi such devices.

ref

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