(because it's way more awesome than using just a Wiimote)
Build it (
make ENABLE_TILT=wii), then run
./neverball and press the Balance
Board's red sync button.
If everything works out, the Power LED should turn on. Now you can use the mouse / keyboard to select the level to play, and then control the level itself using the Balance Board.
For the record, the complete patched tilt wii.c is also available.
With the most recent Patch, you can control the level with the balance board and the camera and menus with the wiimote. Usage: Start neverball, connect wiimote, wait 'til the leds stop blinking, then connect balance board. There are some timing issues right now, so if it crashes while connecting the devices, just try again.