the_newsbeagle writes If you've been hankering to control a robotic battle spider with your mind but haven't known how to begin, you're in luck. A startup called OpenBCI is now selling an Arduino-compatible board that any reasonably competent DIYer can use to build a brain-computer interface. The board takes in data from up to 8 EEG scalp electrodes, and hackers are already using it to pull of some good tricks. There's the guy with the battle spiders, and there's a group in L.A. building a paint-by-brain system for a paralyzed graffiti artist.
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