Electric Cane

One of the labs for my Microprocessor Based System Design class involved making an electric cane for the blind. The cane worked by first taking measurements from an HC-SR04 sonar sensor. The range of the nearest object could be found by measuring the time from an initial pulse to a returning pulse.

Feedback was then sent to the user depending on the distance of the object. The device had two methods for creating feedback: a small vibrating motor and a small speaker. The closer the object was then the faster the feedback provided.