For the battery voltage: the battery voltage is measured at slot 1 on the analog breakout chip. For more info:
http://www.usfirst.org/uploadedFiles...reakout(1).pdf When we first discovered the problem, this chip was overheating and it actually melted itself in some places
So, the first thing we tried was a new chip. While the new chip did not overheat, the battery voltage was still not being displayed. We tried a new module, but this did not solve the problem. After triple checking that we configured the chip correctly, we determined by process of deduction that the problem once again lay in the slot. We do not use any analog inputs, so we determined that we would just leave out the slot 1. While this is not legal in competition (see R61 of last year's rules), it works for demonstrations, which is all this bot will be used for.