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.
