Hand-Mounted Sonar For the Blind
GeekTech.in writes "The Tacit, a wrist-mounted sonar device with haptic feedback, is like strapping a bat to your wrist to help you see. It makes use of two sonar ping sensors to measure the distance to the nearest obstacle. The relative distance to an object is then fed back to the user using two servos which apply pressure to the back of the wrist."
And it should've, damnit.
Keep reading for more information, build notes, parts list, schematics, and code. ...
Important Note #2: The circuit and software is released under a Creative Commons BY-NC-SA license, which I think of as a "Don't be a jerk" license. In short: Make it, learn from it, teach it, improve it, modify it. Just share what you do, give credit, and don't sell any without contacting me first.
PARTS LIST?!? CIRCUIT INFO?!? WOOOT! Now this looks like a damn fun toy.
vos nescitis quicquam, nec cogitatis quia expedit nobis ut unus moriatur homo pro populo et non tota gens pereat.
Blind humans can do a better job of echolocation just with there ears. Check it out (An amazing more complete version, but it's long).
There's even a school that helps teach echolocation to blind people, based in California, I believe. Wikipedia has a basic writeup on it.
Seriously it's pretty amazing to think that a human can develop echolocation ability. But we can.
"First they came for the slanderers and i said nothing."