Nice to see another person which has the idea to build a camper control panel
I have just (sort of) finished mine, it's my first Arduino project.
Check it out on:http://508.winand.nl/?p=1087
(On the right hand side there is a translation option, just hover over the flags, you'll see)
The panel is not build in the camper van yet, which is still under contruction.
I have experimented with a gas sensor to detect gas leaks.
Works well, but the power consumption is arround 100mA, which is too much for my likings
(remember it has to be on all the time..)
I'm thinking of replacing that with measuring the weight of my LPG tank (I use a standing
LPG tank, so putting sensors underneath it should be simple)