OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › Who accept a challenge to write plugin with soil moisture? › Re: Re: Who accept a challenge to write plugin with soil moistur
Dan in CA
I have been testing the Vegitronix soil moisture sensors.
They are designed to be buried in the ground (lawn mower proof) and can operate on 3.3v.
I have some ideas for interfacing them with the OSPi using RS-485 serial which can have cables up to 1 kilometer long. The RS-485 standard also can support a large number of sensors on one serial cable. A 4 wire cable can provide power and carry data (no need to change batteries).