forum.hobbycomponents.com

hi new to arduino, iv just bought the soil moister sensor from ebay and wondered if anyone had a wiring diagram, and are there any librairys to download for it? thanks in advance brett.

Unfortunately we don't have any further information beyond what is on the product page. However this module is very simple in its operation and just uses an LM393 comparator. There is an on-board potentiometer that will set the amount of moisture required to trigger the module. This will cause the DO pin to change state when moisture above this level is detected. You can directly wire this output pin to an input on your Arduino board. Because it is just changing the state of one digital pin, a library isn't really necessary for this module.

As an example sketch, you could try the sketch from our flame detection module thread:

http://forum.hobbycomponents.com/viewto ... =39&t=1199

Just modify the text that's sent to the serial port to say something more relevant.

I currently think about buying such a sensor. How are you use it, except that it does not have the user manual? Do you have tried any other devices?

You can now find a dedicated thread at the following location : http://forum.hobbycomponents.com/viewto ... 3459#p3459

It may help explain how this module operates. This is the only version of this type of sensor that we currently sell.