Watering unit sensor calibration
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I am using the watering.ino example
https://github.com/m5stack/M5Stack/blob/master/examples/Unit/WATERING/WATERING.ino
How should I interpret the humidity sensor values? Is there a way to do a calibration? I get values of about 2100 for the sensor in air, 1800 if wrapped in a wet rag and 1500 if immersed in water.
thanks
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@gantini The sensor is a capacitive sensor and so the higher the reading the lower the moisture level.
These are superior to the resistive sensors that rot easy but work the same way.
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