Other Arduino Codes and Videos by Robojax
/*
* This is the Arduino code for HC-SR04 Ultrasonic Distance Sensor
* to measure the distance using arduino for robotoic car and other applications
* Watch the video https://youtu.be/QI9541YQq7M
* *
* Written by Ahmad Shamshiri for Robojax Video
* Date: Dec 21, 2017, in Ajax, Ontario, Canada
* Permission granted to share this code given that this
* note is kept with the code.
* Disclaimer: this code is "AS IS" and for educational purpose only.
*
*/
/* Original Code
// https://playground.arduino.cc/Code/NewPing
* Modified for Robojax video on Dec 21, 2017
*/
// ---------------------------------------------------------------------------
// Example NewPing library sketch that does a ping about 20 times per second.
// ---------------------------------------------------------------------------
#include <NewPing.h>
#define TRIGGER_PIN 12 // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN 11 // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 200 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.
NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.
void setup() {
Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results.
}
void loop() {
delay(50); // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
Serial.print("Ping: ");
Serial.print(sonar.ping_cm()); // Send ping, get distance in cm and print result (0 = outside set distance range)
Serial.println("cm");
int distance = sonar.ping_cm();// store the distance value in "distance" variable
if(distance <=12){ // if distance is less than 12, do somethings. For example here just print "very close"
Serial.println("Very close");
}
}
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