Ultrasonic Distance Sensor Using Arduino

Arduino Radar Project

The Arduino radio detection and ranging Project is additional of a visible project than it’s a circuit implementation. Of course, I will be able to be victimization completely different hardware like Arduino UNO, HC-SR04 supersonic detector and a Servo Motor, however, the most facet is that the visual illustration within the process Application.

This post is all concerning the unhearable sensing element HC – SR04. I’ll justify however it works, show you some options Associate in Nursingd share an Arduino Project example you’ll follow to integrate in your comes. we offer a schematic diagram on the way to wire the unhearable sensing element, Associate in Nursingd an example sketch to use with the Arduino.

All you would like for this Arduino Project is associate degree unhearable sensing element for police work the objects, a little amateur Servo Motor for rotating the sensing element associate degreed an Arduino Board for dominant them. you’ll watch the subsequent video or scan the written tutorial below.

I connected the Ultrasonic Sensor HC-SR04 to the pins number 2 and 3 on the Arduino Board.

Components needed for this Project

Ultrasonic Distance Sensor [ See Buy Click Banggood | Amazon ]
Arduino Uno [ See Buy Click Banggood | Amazon ]
2x 330 Ohms Resistors [ See Buy Click Banggood | Amazon ]
Breadboard [ See Buy Click Banggood | Amazon ]
Jump Wires [ See Buy Click Banggood | Amazon ]
LED Red, Green … 2 PSC [ See Buy Click Banggood | Amazon ]

*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!


//Ultasonic Sensor
// website www.earthbondhon.com/ultrasonic-distance-sensor-using-arduino/
//Pins connected to the ultrasonic sensor
#define trigPin  2
#define echoPin 3
//LED pins
#define ledGreen 9
#define ledRed 8
//Pin connected to the piezo buzzer
#define alarm 11

int range = 5;//range in inches

void setup() {
  // initialize serial communication:
  Serial.begin(9600);
  //initialize the sensor pins
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  //initialize LED pins
  pinMode(ledGreen, OUTPUT);
  pinMode(ledRed, OUTPUT);
  //set LEDs
  digitalWrite(ledGreen, HIGH);
  digitalWrite(ledRed, LOW);
  
}
void loop()
{
  // establish variables for duration of the ping, 
  // and the distance result in inches and centimeters:
  long duration, inches, cm;

  // The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
  // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(5);
  digitalWrite(trigPin, LOW);

  // Take reading on echo pin
  duration = pulseIn(echoPin, HIGH);

  // convert the time into a distance
  inches = microsecondsToInches(duration);
  cm = microsecondsToCentimeters(duration);
  
  Serial.print(inches);
  Serial.print("in, ");
  Serial.print(cm);
  Serial.print("cm");
  Serial.println();
  
  if(inches < 10) {
    Serial.println("DANGER");
    digitalWrite(ledGreen, LOW);
    digitalWrite(ledRed, HIGH); 
    tone(alarm, 2000); 
    delay(100);
  } else {
    Serial.println("GOOD");
     digitalWrite(ledGreen, HIGH);
     digitalWrite(ledRed, LOW); 
     noTone(alarm);
     delay(100);
  }  
  
  delay(200);
}

long microsecondsToInches(long microseconds)
{
  // According to Parallax's datasheet for the PING))), there are
  // 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
  // second).  This gives the distance travelled by the ping, 
  return microseconds / 74 / 2;
}

long microsecondsToCentimeters(long microseconds)
{
  // The speed of sound is 340 m/s or 29 microseconds per centimeter.
  // The ping travels out and back, so to find the distance of the
  // object we take half of the distance travelled.
  return microseconds / 29 / 2;
}

Ultrasonic Distance Sensor Using Arduino

Arduino Radar Project

Circuit Schematics

Components needed for this Project

Source Code

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