Ultrasonic Aid: an Aid Using an Ultrasonic Sensor for the Visually Impaired

Hello, Today I am going to make a sunglasses mounted "Blind" Aid. I put the quotations on blind because I imagine It could be used more for the visually impaired. this is a rather old concept but I hope that you will be able to understand more about the components through this Instructable. Now onto the fun part!

• Ultrasonic Sensor (HC-SR04)
• 6 Male to Female Jumper Cables
• Peizo Buzzer
• Arduino Genuio Uno
• Arduino IDE
• Sunglasses (or another mount)

Wire Color-Pin on Component-Pin on Arduino

RED-VCC-5v

BLUE-TRIG-9

ORANGE-ECHO-8

BLACK-GND-GND

PURPLE-Negative-10

BLACK-positive-GND

#define echopin 8 // echo pin

#define trigpin 9 // Trigger pin

long duration, distance; //To get some accuracy in time and distance

int buzz=10;// Inititalizing buzzer at pin 10

void setup()

{ Serial.begin (9600);

pinMode (trigpin,OUTPUT);

pinMode (echopin,INPUT );

pinMode (buzz,OUTPUT); }

void loop()

{

{ digitalWrite(trigpin,HIGH);

delayMicroseconds(0);

digitalWrite(trigpin,LOW);

delayMicroseconds(0);

duration=pulseIn (echopin,HIGH);

distance= duration/100;

Serial.println(distance); }

if(distance>300) {

digitalWrite(buzz,LOW);

delay(1000);

digitalWrite(buzz,LOW);

delay(1000); }

else if(distance<300 && distance>200)

{ digitalWrite(buzz,HIGH);

delay(500);

digitalWrite(buzz,HIGH);

delay(500); }

else if(distance<200 && distance>10)

{ digitalWrite(buzz,HIGH);

delay(250);

digitalWrite(buzz,LOW);

delay(250); }

else if(distance<70)

{ digitalWrite(buzz,HIGH);

delay(100);

digitalWrite(buzz,LOW);

delay(100); }

else if(distance<25){

digitalWrite(buzz,HIGH); } }