This is already quite aged product, but as I’ve used it before on various devices and stumbled across a killer deal at ebay for 10 units,  so I couldn’t resist it. Now I’m already designing a multiple new solutions to use these in. The module in question is a small ARM7 based ethernet device by Digi International – and they also have an upgraded version of this, based on ARM9. I like these a lot, it has proven to be very solid design and the supplied Net+OS very stable and quite easy to understand.
And what to do with it? For example, ethernet-enabled lightning control and movement sensing unit. Easily timed and controlled remotely. Powering can be done with POE, so it’s all standard equipment and cabling needed to use it. More on this when I’ll have time to write some more code for it.
Here’s also a pic from my test setup for outdoor led-lightning. Would be nice if it was a bit warmer in tone, and picture again makes it seem colder than it is actually. Plan is to add ~6-8 of these units in a similar fashion to light up the front yard, so it would prove enough light to see at night time but not be too bright.