arduino-capacitive-soil-moisture-sensor/

[utterances-bot]

Arduino - Capacitive Soil Moisture Sensor

https://www.gabrielcsapo.com/arduino-capacitive-soil-moisture-sensor/

[severin-bruhat]

Hi, thanks for this article, the calibration sounds really straightforward. However when I do that with a couple of v2.0 moisture sensors, I get random inconsistent wet and dry numbers, so it's impossible for me to calibrate. For instance I would get dry = 61 and wet = 43, but after a few second, my sensor, in the water would indicate 63. I have no idea what's going on. Any idea? Thank you

[gabrielcsapo]

hey @severin-bruhat, sadly it is one of those things that sometimes you might get a bad sensor.

Can you post the sensor you are using?

[severin-bruhat]

Hey, thanks for replying to me.

I bought those ones: https://www.amazon.co.uk/gp/product/B09C616HQH/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 it says v1.2, but I received v2.0 version. I've got 6 of them, and they all return the same values. See an example: Plant 1 - Moisture Level: 65.00 -> dry Plant 1 - Moisture Level: 65.00 -> dry Plant 1 - Moisture Level: 66.00 -> dry Plant 1 - Moisture Level: 67.00 -> dry Plant 1 - Moisture Level: 73.00 -> dry Plant 1 - Moisture Level: 74.00 -> dry Plant 1 - Moisture Level: 74.00 -> wet Plant 1 - Moisture Level: 72.00 -> wet Plant 1 - Moisture Level: 73.00 -> wet Plant 1 - Moisture Level: 64.00 -> wet Plant 1 - Moisture Level: 61.00 -> wet Plant 1 - Moisture Level: 61.00 -> wet Plant 1 - Moisture Level: 60.00 -> wet Plant 1 - Moisture Level: 75.00 -> wet Plant 1 - Moisture Level: 66.00 -> wet Plant 1 - Moisture Level: 65.00 -> wet

The code I use: void loop() { Serial.print("Plant 1 - Moisture Level: "); sensor1Value = analogRead(Pin1);

Serial.println(sensor1Value); delay(5000); }

This makes no sense to me.

On Wed, May 25, 2022 at 12:44 AM Gabriel Csapo @.***> wrote:

hey @severin-bruhat https://github.com/severin-bruhat, sadly it is one of those things that sometimes you might get a bad sensor.

Can you post the sensor you are using?

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