This project is designed to guide a visually impaired person to walk and avoid bumping into obstacles. Low-cost
ultrasonic rangefinders along with a microcontroller are used to measure the distance to obstacles and if they are close
enough to provide feedback to the user in form of beeps or vibrations.
The project is made on a small single layer PCB. It is a portable project which is mounted on a metal plate such
that it can be fixed on any belt type structure. The sensors are not mounted on the PCB but they are mounted in the front
of the plate and connected to the main board using wires. It’s designed exactly like a mobile carrying case used on belts.