Leandrea's Digital and Electronic Art Blog: November 2017

Here I have attached the Ping Sensor, LED lights, the piezo buzzer, and the Aruduino.

Here is the code that I used for the Arduino

#define echoPin 10 // Echo Pin
#define trigPin 9 // Trigger Pin

const int freq = 5500;
const int dur = 20;
const int buzzer = 8;
const int red1 = 11;
const int yellow1 = 13;
const int green1 = 12;

int maximumRange = 200; // Maximum range needed
int minimumRange = 0; // Minimum range needed
long duration, distance; // Duration used to calculate distance

void setup() {
// put your setup code here, to run once:{
pinMode(buzzer, OUTPUT);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(green1, OUTPUT);
pinMode(yellow1, OUTPUT);
pinMode(red1, OUTPUT);
digitalWrite(green1, HIGH);
digitalWrite(yellow1, HIGH);
digitalWrite(red1, HIGH);

delay(300);
digitalWrite(green1, LOW);
digitalWrite(yellow1, LOW);
digitalWrite(red1, LOW);
tone(buzzer, 4000, 3000);
}

void loop() {
// put your main code here, to run repeatedly: {
/* The following trigPin/echoPin cycle is used to determine the
distance of the nearest object by bouncing soundwaves off of it. */
digitalWrite(trigPin, LOW);
delayMicroseconds(2);

digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
//Calculate the distance (in cm) based on the speed of sound.
distance = duration/58.2;

if (distance < 7){
digitalWrite(green1, LOW);
digitalWrite(yellow1, LOW);
digitalWrite(red1, HIGH);

} else if (distance < 15){
digitalWrite(green1, HIGH);
digitalWrite(yellow1, LOW);
digitalWrite(red1, LOW);

} else if (distance < 20){
digitalWrite(green1, LOW);
digitalWrite(yellow1, HIGH);
digitalWrite(red1, LOW);

} else if (distance < 25){
digitalWrite(green1, LOW);
digitalWrite(yellow1, HIGH);
digitalWrite(red1, LOW);

} else if (distance < 30){
digitalWrite(green1, LOW);
digitalWrite(yellow1, HIGH);
digitalWrite(red1, LOW);

}
if(distance < 7){
tone(buzzer, 4000, 3000);
delay(5);
} else if (distance < 15){
tone(buzzer, freq, dur);
delay(10);
} else if (distance < 20){
tone(buzzer, freq, dur);
delay(15);
} else if (distance < 25){
tone(buzzer, freq, dur);
delay(20);
} else if (distance < 30){
tone(buzzer, freq, dur);
delay(25);
}

//Delay 50ms before next reading.
delay(50);
}

Here's the Final Result of putting it together and adding in the code.