Imagine waking up next to a light sleeper and you have to get to the bathroom but you're in an pitch black hotel room. Even a flashlight will wake him or her up but you can't hold it for the next three hours when the alarm goes off. What if you could navigate a hotel room like a bat navigates a cave...
By: 24Eng
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from Instructables: exploring - technology - robots http://ift.tt/1FFLbnc
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