I'm trying to come up w/ a better script that puts as little stress on the cpu as possible, so I can get more accurate readings (right now, the script polls retu-adc every minute; I want to build a native C application that just checks the retu value every minute, instead of having to run a whole program).

I'm also thinking of making the output something like CSV so I import it into Openoffice and graph the data.

As for the algorithm, I'm wish I could get the current draw on the battery, to better predict how much time left you have doing the current activity: anyone know how to do this?