I'd be interested to hear more about what your doing with your MSP430G2553 based micro controller both in the garden setting and at the end of your drive. Both sound very interesting indeed.
All the best
Sorry just saw this. I have 2 devices so far. The 1st one is a switch and input device. The switch drives some 12 volt relays that can switch up to 120v ac but with a small amp rating at 120v ac. Great for irrigation or a gate etc. It could be coupled with a contactor for more current if needed. The inputs are digital (for now) that can be connected to say a rain sensor or a photo eye. I have some vehicle loop sensor connected. I am working on analog devices now like temp and moisture. Pretty straight forward.
The 2nd device is an audio switch that uses digital switches. The one I have take 16 inputs and can switch it to one or all of 12 outputs.
If you can make your own PCBs (which is pretty easy) the costs are very cheap for the switch. The audio switch can get pricey with each of the digital switches around $2.50US each. You need 1 for each output zone per channel with 8 inputs max. So 4 chips for each output zone for my setup with 16 inputs. This could start small and chips added as needed to keep the cost down.
I do have some extra PCBs if you are interested. I had some made in China.
I just started to work on a touch screen controller for lmce. Not an orbiter but basically a switch that would be tied to events. trying to get it to fit in a j box with a standard decora plate.
Sorry for the late reponse