Automatic plant watering device

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3 Responses

  1. JaapP says:

    Hello
    Thanks for sharing this project!
    I have build this using an arduino ,(testing with uno will use nano later) and relay with optocoupler.
    But in my case it works the other way around.
    To get it working I had to chanche by waterlevel and moisture.
    Can someone explain?

  2. tim says:

    Hello
    Can someone explain?
    in my case it works the other way around.
    resistor 10k false parallel
    resistor 10k true in series
    problema whith waterLevelSensor A1 it works the other way around.

  3. Max says:

    if A1 water sensor is an input reading vol level, then the cable going to water should be +5v not Gnd no? if ground goes to water it would still read 0v.

    To reply the above conecting in series or not putting the 10k at all should leave an open circuit that gets closed when water level is high. maybe there is some level difference between +0v GND and input pin? that still reads the closed circuit as an analog change.

    let me know if it makes sense

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