Student and developer Denver Dias has posted an intro to his undergrad project in Engineering: a walking aid for the blind.
The walking aid consists of a pair of shoes attached with ultrasonic sensors on the sensing side. The information, obtained from these sensors, is used to form a virtual map of the surroundings. This information is processed and fed to the user via the sense of touch. He used the Arduino Mega 2560 for processing and created a custom shield as a mega-connector to the rest of the contraption. Feedback is provided to the user via vibrating elements placed in the trouser pockets.
Denver will be releasing the open source project build details in a series of posts. For info and updates on this developing project, visit his RevRYL blog.