Hi all, I'm trying to use a Soil moisture sensor with a Samr21-xpro and RIOT os. The sensor used is as follows :
https://www.seeedstudio.com/Grove-Moisture-Sensor-p-955.html I have *4 soil jars (with different moisture concentrations)* that i'm gonna use for testing, i've already tried to get moisture values with *Arduino Uno* and they seem to be acceptable. *For both, i used the built in ADC with 10 bits of resolution.* But when i try to use the samr21, it gets me always 330 as value (10 bits ADC). For the SAMR21* i used the default parameters for ADC_0*. There is a way to rectify the readings, or some kind of calibration to do? Thanks a lot, *best regards, * *Alessandro*
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