Thanks to Ninjin, a good getting-start documentation can be found in the following site:
http://ninjin-weblog.blogspot.com/2007/06/wiimote-under-freebsd-using-bsdmoted.html
Wii remote is an innovative hci device developed by Nintendo. bsdmoted intends to help FreeBSD users to use Wii remote as mouse on FreeBSD. In this version, it is able to change default movement method with "bsdmoted -m" or with button 1 or button 2. A simple calibration is provided when setting movement method.
Wii remote is an innovative hci device developed by Nintendo. bsdmoted intends to help FreeBSD users to use Wii remote as mouse on FreeBSD. In this latest version, IR Pointing with sensor bar is set as default mouse movement. According to http://www.cns.bu.edu/~chhsiao/bsdmoted/gimp.mpg, IR pointing works very well.
bsdmoted is a wii remote driver on FreeBSD to help FreeBSD users use wii remote as mouse. Currently able to use tilting motion sensor for mouse movement, Button A as left button, and Button B as right button.