Can't find SR04 for my Ultrasonic Sensor

17ruxcodes_pi · April 9, 2025, 11:08pm

I'm new to arduino and currently working through the lessons of Elegoo. I'm on lesson 7, and I have the code all down right from the lesson but can't find they the HC-SR04 or SR04 within the library.

Getting:
V1.0.2023.05.05\English\code\Lesson 10 Ultrasonic Sensor Module\SR04_Example\SR04_Example.ino:3:10: fatal error: SR04.h: No such file or directory
#include "SR04.h"
^~~~~~~~
compilation terminated.
exit status 1

Compilation error: SR04.h: No such file or directory

I'm trying to dowload the SR04 but i can not find it

xfpd · April 10, 2025, 12:30am

No library is used. You initiate a pulse train, wait to receive an echo, do some math to find distance. Show your sketch.

I found the tutorial... lesson 10... it does indeed show loading a library...

github.com/rmorenojr/ElegooTutorial

Lesson%2010%20-%20Ultrasonic%20Sensor%20Module/mySR04_Example/mySR04_Example.ino

master

//www.elegoo.com
//2016.12.08
#include "SR04.h"
#define TRIG_PIN 12
#define ECHO_PIN 11
SR04 sr04 = SR04(ECHO_PIN,TRIG_PIN);
float a;

void setup() {
   Serial.begin(9600);
   delay(1000);
}

void loop() {
  long pingDuration;   
   
   a=sr04.Distance();
   pingDuration = sr04.pingTime();
   Serial.print(a);
   Serial.println("cm");

This file has been truncated. show original

Somewhere with your software is a library folder with the SR04 library. Install it.

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Can't find SR04 for my Ultrasonic Sensor

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