Little update... even though nobody's even downloaded it yet... xD
Charge data view now only updates the screen when the values change (still polls every 500ms). It also creates a histogram next to the values on the screen using 2 LCD characters for each value (10 history values total), and the range is set by the peak values (highest and lowest, starts about in the center). Except for voltage, it reads that from the battery: peak is charging voltage+0.3v, low is EDVF (End of Discharge Voltage, Final = battery usually cuts power to the PC).
(hey, now that would be a useful library to have!)
Now... on with making musical relays! 