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Topic: Soil Moisture sensor (Read 5 times) previous topic - next topic

Lentrave

I think i will have to do test by soil weight to know the humidity level and the reading according to that!

robtillaart

Quote
I want to show in % the soil humidity but Another problem is i dont think the soil resistance increase is linear so maybe i do this for nothing


Check my multiMap() on the playground, it is invented for non linear thingies. See - http://playground.arduino.cc/Main/MultiMap -

(time for a cup of tea ;)
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

Lentrave


Quote
I want to show in % the soil humidity but Another problem is i dont think the soil resistance increase is linear so maybe i do this for nothing


Check my multiMap() on the playground, it is invented for non linear thingies. See - http://playground.arduino.cc/Main/MultiMap -

(time for a cup of tea ;)


ok i read it but i not sure to understand what i'm reading :P

robtillaart

Quote
ok i read it but i not sure to understand what i'm reading


multimap() interpolates between points in a lookup table. Better?
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

Lentrave

...... maybe... so i make my test with weight/read tu deternine the % of water in the soil and then i enter the value in multimap() (ex: 5%,10%,15% etc...) and the corespondant reading (ex:1000,950,900 etc...) and .....

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