Ultrasonic Sensor

Ultrasonic sensor test. It works. Nice.

Ultrasonic sensor module is HC-SR04. I purchased this from virtuabotix.com. The company provides a Ultrasonic library.

• Go to https://www.virtuabotix.com/feed/?page_id=1587 and find the Ultrasonic section.
• Download the library.
• Unzip it and copy the unzipped folder to your Arduino libraries folder.
• You may restart Arduino to let it recognize the new library.
• Use an example code for your starting step.

Here is the example.

#include <Ultrasonic.h>

#define TRIGGER_PIN 12

#define ECHO_PIN 13

Ultrasonic ultrasonic(TRIGGER_PIN, ECHO_PIN);

void setup()

{

  Serial.begin(9600);

}

void loop()

{

  float cmMsec, inMsec;

  long microsec = ultrasonic.timing();

  cmMsec = ultrasonic.convert(microsec, Ultrasonic::CM);

  inMsec = ultrasonic.convert(microsec, Ultrasonic::IN);

  //Serial.print("MS: ");

  Serial.print(microsec);

  Serial.print(", ");

  //Serial.print(", CM: ");

  Serial.print(cmMsec);

  Serial.print(", ");

  //Serial.print(", IN: ");

  Serial.println(inMsec);

  delay(1000);

}

Just wire pins as the source code says. Then open the Serial Monitor from Arduino. You will see he raw milliseconds and distance in centimeter and inch.

That’s it.