For better accuracy and assistance two or three ultrasonic sensors sensors can be added to this project.
Smart blind stick with ultrasonic sensor.
The smart stick is built on arduino pro mini.
The blind stick is integrated with ultrasonic sensor along with light and water sensing.
These blind people are totally dependent on others as they can t walk alone.
The stick also has an rf receiver which connects with an rf transmitter that acts as a remote for finding the stick on missing.
I used ultrasonic sensor for detecting the obstacles.
This is the reason why we have designed the blind walking stick device which will help blind people to walk with ease independently.
Of course you can use a vibrator motor in place of buzzer and advance a lot more using your creativity.
This smart stick will have an ultrasonic sensor to sense distance from any obstacle ldr to sense lighting conditions and a rf remote using which the blind man could remotely locate his stick all the feedbacks will be given to the blind man through a buzzer.
It cost me just 10 to make one.
Blind stick is an innovative stick designed for visually disabled people for improved navigation.
Through this the blind person can aware about the obstacles in front of him.