Download (smart_stick_schematic.png)

File Description: A smart stick built using PIC microcontroller and ultrasonic rangefinders to detect obstacle in front of it and warn the user by a beep of buzzer. This project can help a visually challenged person walk much more comfortably.
File Type: Schematic/Circuit Diagram
More Details: http://digital-wizard.net/pic_projects/smart_stick_for_visually_impaired