How to make your own DIY Ultrasonic Range Finder?

Hello viewers,

Today we are gonna build a Ultrasonic Range Finder. This is basically an essential part of our Interstellar Rovers. Let's Start of by learning to connect the components.

Step-1: Click on Tinkercad in your web browser.

Step-2: Create an account or sign in if you have an existing Autodesk account.

Step-3: Click on Circuits in your Dashboard.

Step-4: You'll need to Drag and drop an Arduino UNO R3 as well as an Distance sensor from the components Menu on the right.

Step-5: Click on Arduino GND port and drag the wire to the Sensor GND port. Similarly. click on 5V Arduino port and drag the wire to the sensor port.

Step-6: Connect the digital pin to the SIG pin on the sensor.

It's Time to Code! 

/*

  Ping))) Sensor

  This sketch reads a PING))) ultrasonic

  rangefinder and returns the distance to the

  closest object in range. To do this, it sends a

  pulse to the sensor to initiate a reading, then

  listens for a pulse to return.  The length of

  the returning pulse is proportional to the

  distance of the object from the sensor.

  The circuit:

   * +V connection of the PING))) attached to +5V

   * GND connection attached to ground

   * SIG connection attached to digital pin 7

  http://www.arduino.cc/en/Tutorial/Ping

  This example code is in the public domain.

*/

int inches = 0;

int cm = 0;

long readUltrasonicDistance(int triggerPin, int echoPin)

{

  pinMode(triggerPin, OUTPUT);  // Clear the trigger

  digitalWrite(triggerPin, LOW);

  delayMicroseconds(2);

  // Sets the trigger pin to HIGH state for 10 microseconds

  digitalWrite(triggerPin, HIGH);

  delayMicroseconds(10);

  digitalWrite(triggerPin, LOW);

  pinMode(echoPin, INPUT);

  // Reads the echo pin, and returns the sound wave travel time in microseconds

  return pulseIn(echoPin, HIGH);

}

void setup()

{

  Serial.begin(9600);

}

void loop()

{

  // measure the ping time in cm

  cm = 0.01723 * readUltrasonicDistance(7, 7);

  // convert to inches by dividing by 2.54

  inches = (cm / 2.54);

  Serial.print(inches);

  Serial.print("in, ");

  Serial.print(cm);

  Serial.println("cm");

  delay(100); // Wait for 100 millisecond(s)

}

I hope the content is helpful!