Go unplug your sensor bar, then turn on your wii. Take two candles and light them above your TV, and move the wiimote around. Notice anything? If you did it right, then your wii cursor should be moving around. You might think its crazy, but it works. All the sensor bar does is shoot 4 IR lights. The Wiimote does the sensing. Candles make IR light so there you go, home made wireless, no battery using, no electricity using, sensor bar