SMART BLIND MAN STICK - ARDUINO PROJECT
List of components required :
- An Arduino Uno.
- An Ultrasonic sensor( HCSR04 ).
- A Mini breadboard.
- A 9-volt battery.
- A 9-volt battery connector.
- DC male power jack.
- A Buzzer.
- Some Jumper wire.
- Vibrating motor from a broken cell phone.
Circuit Diagram :
Check out the video :
About the Project :
Using this smart blind stick, a visually impaired person can walk without anyone's help. The smart blind stick automatically detects the obstacle in front of the person and give him a response to the person by vibrating the stick and also with a warning sound.
With the help of this, a blind person can aware about the obstacles in front of him.
Blind stick is an innovative stick designed for visually disabled people for improved navigation. We here 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.
NOTE :
- This can be made as your school project.
- This project costs around RS 800 - 1000.
- The main objective of this project is to help visually impaired people.
Code for the project :
#define trigPin 13
#define echoPin 12
#define motor 7
#define buzzer 6
void setup()
{
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(motor, OUTPUT);
pinMode(buzzer,OUTPUT);
}
void loop()
{
long duration, distance;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
if (distance < 20)// This is where checking the distanceyou can change the value
{
digitalWrite(motor,HIGH); // When the the distance below 100cm
digitalWrite(buzzer,HIGH);
} else
{
digitalWrite(motor,LOW);// when greater than 100cm
digitalWrite(buzzer,LOW);
} delay(500);
}
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