Abstract:
Blind stick is an innovative stick designed for visually disabled people for improved
navigation.that propose an advanced blind stick that allows visually challenged people
to navigate with ease using advanced technology. The blind stick is integrated with
ultrasonic sensor . The project first uses ultrasonic sensors to detect obstacles ahead
using ultrasonic waves. On sensing obstacles the sensor passes this data to the
microcontroller. The microcontroller then processes this data and calculates if the
obstacle is close enough. If the obstacle is not that close the circuit does nothing. If
the obstacle is close the microcontroller sends a signal to sound a buzzer. It also
detects and sounds a different buzzer if it detects water and alerts the blind. The
system has one more advanced feature integrated to help the blind find their stick if
they forget where they kept it. A wireless rf based remote is used for this purpose.
Pressing the remote button sounds a buzzer on the stick which helps the blind person
to find their stick. Thus this system allows for obstacle detection as well as finding
stick if misplaced by visually disabled people.