This is what the new, battery powered board looks like. I added op-amp buffers for the analog inputs. It works great for soil moisture sensor, water leak detector, temperature sensor, etc. And the digital inputs can wake up the board - good for magnetic contact sensor, motion detector, etc. It'll last for years on a single CR2450 battery!
Here's a new eBay listing for it...
Some info has been added to the MonaLisa documentation / guide as well.
