// BiGgY Handsome Ultrasonic
int trig = 6;
int echo = 4;
long duration = 0;
double cm = 0;
double inch = 0;
int led1 = 9;
int led2 = 11;
int led3 = 12;
void setup()
{
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
}
void loop()
{
//digitalWrite(trig, LOW);
digitalWrite(trig, HIGH);
digitalWrite(trig, LOW);
duration = pulseIn(echo, HIGH);
cm = duration*0.0344/2;
inch = duration*0.01352/2;
Serial.begin(9600);
Serial.print("Duration = ");
Serial.print(cm);
Serial.println(" Centimeter");
Serial.print("Duration = ");
Serial.print(inch);
Serial.println(" Inch");
Serial.println();
if(cm < 100)
{
digitalWrite(led1, HIGH);
delay(1000);
digitalWrite(led1, LOW);
delay(1000);
}
else if(cm >= 100 && cm <= 149)
{
digitalWrite(led2, HIGH);
delay(1000);
digitalWrite(led2, LOW);
delay(1000);
}
else if(cm >= 150)
{
digitalWrite(led3, HIGH);
delay(1000);
digitalWrite(led3, LOW);
delay(1000);
}
}