Wrist-mounted Sonar Helps the Blind See

tacit

Tacit is a wearable device that uses sonar to measure the distance to objects and provides users with a “view” of their surroundings through haptic feedback. Tacit is worn on the wrist and doesn’t interfere with other assistant devices, so a user doesn’t have to ditch the cane or send Fido packing to the pound. The prototype works by sending out ultrasonic pulses that are connected to a microcontroller, which calculates the distance to objects by reading the time that it takes for the pulses to return.

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