[riot-devel] Soil Moisture Sensor

Peter Kietzmann peter.kietzmann at haw-hamburg.de
Tue Oct 11 16:46:21 CEST 2016


Hi Alessandro,

what are the default values for ADC_0 on the samr21-xpro board and which
driver did you use?

Best
Peter

Am 11.10.2016 um 16:32 schrieb ALESSANDRO NICOLI:
> 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*
> 
> 
> 
> _______________________________________________
> devel mailing list
> devel at riot-os.org
> https://lists.riot-os.org/mailman/listinfo/devel
> 

-- 
Peter Kietzmann

Hamburg University of Applied Sciences
Dept. Informatik, Internet Technologies Group
Berliner Tor 7, 20099 Hamburg, Germany
Fon: +49-40-42875-8426
Web: http://www.haw-hamburg.de/inet


More information about the devel mailing list