Few home gardeners count electronics among the trusty tools in their gardening toolbox. Right now Amy Stewart, one of the very opinionated and talented writers of the Garden Rant blog, has posted about this gadget, above, which takes soil and sun readings that can be analyzed on your computer. For those of you who lead busy city lives or are just learning to garden, do you think this gadget has a place in your life? Or is this where we all should draw the line?