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  • Arduino ESP32 DIY Water Level Sensor and DIY Level Indicator 6 months ago

    I believe that your solution will work and that it eliminates the influence of conductivity variations of the water, but at the cost of a number of ADC input pins (one for each level).
    Perhaps putting a small capacitor (100 nF) across the 1 M resistor can reduce the noise.

  • Arduino ESP32 DIY Water Level Sensor and DIY Level Indicator 6 months ago

    Good thinking, that could also work, however that way you will be using 6 GPIO's , instead of just 2. In your approach I would connect the ground pin to GND of the circuit and give each wire a resistor, while connecting all resistors to 1 GPIO output pin and the "sensing" pins to the GPIO input pins and the others side of each resistor.

  • Arduino Capacitive Soil Moisture Sensor (DIY) with ESP32 12 months ago

    Dear jkb
    You are very right, the Fritzing diagram is correct. I have meanwhile corrected the electrical diagram in the tutorial. Thank you for the above link
    Best Regards

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