Missing a spirit level at home, I decided to use the Wiimote as a replacement. Over time, this tool evolved to something more like a protractor.
Please put any comments or suggestions on the Talk Page, I'd appreciate the feedback.
Note: If you use C++ and want to use GRRlib for drawing, you might want to have a look at the 'Draw' class (Draw.cpp & Draw.h). This thing kept me sane :-)
v0.5:
Chg: Slightly adjusted maximum value to reduce flickering near 90 degrees.
Chg: GRRlib is now responsible for all drawing needs. (Which means: more eye-candy)
Add: Raw acceleration values in the debug info text
Add: Freeze function on pressing Plus to freeze current values - this is interesting if you cannot see your screen.