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Submission + - Hacker Steve Built Hand-Mounted Tacit Sonar Device ( writes: "This innovations takes out the stick from a blind man’s hand. Steve has been working on the Tacit, a wrist mounted sonar device with haptic feedback, it’s 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."
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Hacker Steve Built Hand-Mounted Tacit Sonar Device

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