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There are some sensors for the Raspberry Pi that can measure humidity, temperature and other values. Nevertheless, these modules are almost exclusively suitable for the air and not intended for use in the earth.
For some projects, such as an automatic plant supply, the moisture of the soil must be measured, then, e.g. refilled with water.
In this tutorial, I’ll show you how to skip the (analog) humidity reading with a sensor and convert it to a digital value so that the Raspberry Pi can interpret it.
