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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!



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