Smart Glass For Blind People Using Arduino and Ultrasonic Sensor

 

CODE:- int trigpin=12;

int echopin=11;

int traveltime;

float pingtraveldistance;

float targetdistance;

int buzzer=9;

void setup() {

  // put your setup code here, to run once:

pinMode(trigpin,OUTPUT);

pinMode(echopin,INPUT);

pinMode(buzzer,OUTPUT);

}

void loop() {

  // put your main code here, to run repeatedly:

digitalWrite(trigpin,LOW);

delayMicroseconds(10);

digitalWrite(trigpin,HIGH);

delayMicroseconds(10);

digitalWrite(trigpin,LOW);

delayMicroseconds(25);

traveltime=pulseIn(echopin,HIGH);

targetdistance=(traveltime*0.034)/2;

digitalWrite(buzzer,LOW);

if (targetdistance<45) {

  digitalWrite(buzzer,HIGH);

}

}