Published August 3, 2023 © GPL3+

Empower the Visually Impaired with a Smart Blind Stick!

How to make a Smart Stick for Blind People

IntermediateFull instructions provided2 hours277

Empower the Visually Impaired with a Smart Blind Stick!

Things used in this project

Hardware components

Arduino Nano R3

SparkFun Ultrasonic Sensor - HC-SR04

Brown Dog Gadgets Solar Cockroach Vibrating Disc Motor

Buzzer

9V battery (generic)

9V Battery Clip

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Hot glue gun (generic)

stick wooden

Story

If you want to see the video :

Currently there are thousands of blind people all over the globe. These include people from low sight seeing to complete lost of visual. They find it very difficult while crossing the road or reaching to their respective destination with the help any other individual. The traditional stick cannot help to detect the obstacles in front or the potholes in the way. It is outdated. Hence there is a need to update it using today's technology.

The Technology

The smart stick for the blind as the name suggests is a device for the visually impaired to guide the user to respective destination and avoiding to collide with the obstacles. It uses two ultrasonic sensors HC SR 04 to detect the depth below or the obstacles in between. Along with that it uses Arduino as the main controller. And 1sheeld as the Bluetooth interface between the controller and smartphone. Whenever there is any obstacle in front. The sensor will detect the distance from the obstacle and send to the controller. The controller will then convert in audio format.

Code

Code

// https://www.youtube.com/channel/UCaXI2PcsTlH5g0et67kdD6g  //
// Smart Stick for Blind peoples //
// By MOHD SOHAIL //

const int trigPin = 3;
const int echoPin = 2;
const int buzzer = 5;
const int motorPin = 6;


long duration;
int distance;
int safetyDistance;


void setup() {
pinMode(trigPin, OUTPUT); 
pinMode(echoPin, INPUT); 
pinMode(buzzer, OUTPUT);
pinMode(motorPin, OUTPUT);
Serial.begin(9600); 
}


void loop() {

digitalWrite(trigPin, LOW);
delayMicroseconds(2);


digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);


duration = pulseIn(echoPin, HIGH);


distance= duration*0.034/2;

safetyDistance = distance;
if (safetyDistance <= 30){
  digitalWrite(buzzer, HIGH);
  digitalWrite(motorPin, HIGH);
}
else{
  digitalWrite(buzzer, LOW);
  digitalWrite(motorPin, LOW);
}


Serial.print("Distance: ");
Serial.println(distance);
}

Credits

Mohd Sohail

10 projects • 4 followers

I'm a Robotics Engineer and Freelancer

Empower the Visually Impaired with a Smart Blind Stick!

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

What is Smart Blind Stick?

Purpose of Blind Stick

The Technology

Schematics

Circuit

Code

Code

Credits

Mohd Sohail

Comments

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Empower the Visually Impaired with a Smart Blind Stick!

Empower the Visually Impaired with a Smart Blind Stick!

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

What is Smart Blind Stick?

Purpose of Blind Stick

The Technology

Schematics

Circuit

Code

Code

Credits

Mohd Sohail

Comments

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