Ok after playing with my Arduino I have decided on my first project. I plan on creating an automated watering system for some pot plants. I want to sense the moisture of the soil in one of the pots and then based on the results of this turn a 12v pump on or off.
From having a searched around the net, the turning of the pump on or off should be easy, however i can't find any real reference to what sensor to use for the soil moisture?
Does any one has any ideas in regards to the sensor? or even the project as a whole, i'm trying to keep this as easy as possible as i'm quite new to this.