Originally Posted by Tenkai Star:
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Correct! You can buy a batterypowered sensor bar to use with the emulator if you dont like candles.
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Two years ago I built an USB-powered one with a friend of mine.
Four IR LEDs, four resistors, electric wire, some solid structure (to keep them fixed and safe) and one USB cable cut in half. It worked flawlessly, even better than the official one.
EDIT: I wouldn't connect it to my PC (I'm still afraid some miscalculation could fry my USB controller, my laptop had USB controller issues and I don't want this to happen again lol), but it works flawlessly with a spare USB hub I have (I just connect the sensor bar to the hub, the hub to the power line, and I'm ready to go).