Bat-Inspired Device Could Help Blind Navigate
From: Medical Design Technology - 12/01/2014

Students and professors develop a novel way to help those with visual
impairment

The prototype is made up of several components. It is powered by an Arduino
Lilypad microprocessor, runs JAVA-like code, and is combined with the sonar
distance sensors and two cellphone vibrating motors. It measures the distance
of objects and provides feedback via vibrations to the user. The frequency of
vibrations is proportional to the distance from the detected object, allowing
the user to accurately discern an obstacle’s proximity; they get faster as it
draws near.

Read the entire article at:
http://www.mdtmag.com/news/2014/12/bat-inspired-device-could-help-blind-navigate
http://news.wfu.edu/2014/11/14/sonar-assisted-human-navigation/

Links:
Paul Pauca
http://csweb.cs.wfu.edu/~pauca/Welcome.html

Evening the odds
http://news.wfu.edu/2014/10/20/evening-the-odds/

Watch inspired by bats and moths uses sonar and vibrations to guide the blind, costs $60
http://www.digitaltrends.com/cool-tech/watch-inspired-bats-moths-uses-sonar-vibrations-guide-blind/

Related:
A Voice For Victor
http://magazine.wfu.edu/2011/06/03/a-voice-for-victor/