Topic Type:
Information
Here is a link, which leads to other links of home brew and lower cost commercial irrigation controllers, most are TCP/IP http://forums.makezine.com/comments.php?DiscussionID=2074 .
Ware Brothers had a commercial product for several years which received reasonably good reviews, but the company was acquired and their product is no longer available.
http://www.microsofttranslator.com/bv.aspx?from=fr&to=en&a=http%3A%2F%2Fgrenouille34730.fr%2FCommander.html - link to french company which produces device with irrigation functionality similar to what is described by Louis in the project scope. Price per node ~250EUR.
This one is also wired, not wireless - same hack could be applied as I mentioned in my other post to make it wireless. But the other product looks maybe more viable for US purchase?