[nathanww]

Just a hint about sensors from our last year:

Figure out what kind of sensors you want(and a general idea of where to put them) at an early stage in the process. This is important because often the sensors themselves can have quirks, or there can just be cases of PEBKAC leading to some truly bizzarre results. Ideally you should know the specs of every sensor you are using before you start writing code for any of them.