DIY: Blind Assistance Walking Stick with Sensors for Obstacle Detection

So you want to build your own walking stick with sensors to detect obstacles and keep you out of trouble? Blind Assistance is just the project you need to check out. It is a walking stick augmented with 3 ultrasonic sensors, 4Duino, a vibration motor, and an LED. It detects obstacles from 2cm to 400cm and vibrates to alert you.

4D Systems has shared how to build your own walking stick here.