Recommended · for some experience
#207 Why most Arduino Soil Moisture Sensors suck (incl. solution)
Why people recommend it
Andreas Spiess explains why many cheap Arduino soil moisture sensors give poor readings and shows a fix; cited by people building or modifying capacitive sensor boards.
Watch for: the suggested diode modification
In their words
The author of the hackster.io article cites Andreas Speiss' well-known YouTube video on "Why Most Moisture Sensors Suck"...
Seamus on arduino.stackexchange.com, Nov 2020. CC BY-SA.
You might find this video very interesting:
Maximilian Gerhardt on arduino.stackexchange.com, Jun 2018. CC BY-SA.
I will point you to this video explaining which moisture sensors "suck" - and should therefore be avoided.
Seamus on raspberrypi.stackexchange.com, Dec 2023. CC BY-SA.