Error when using HCSR04 example

Using the HCSR04Example.m file only edited for the pins I am using on my Arduino Uno and COM3 instead of COM38 with Arduino hardware support and HC-SR04 Add-On Library for Arduino. I keep getting the error:

    >> HCSR04Example
Updating server code on board Uno (COM3). Please wait.
Error using HCSR04Example (line 25)
The Arduino source 'Ultrasonic/Ultrasonic.h' for libraries 'JRodrigoTech/HCSR04' cannot be found. Install the 3P library source first and try again.

Have I not installed an add-on or not taken something else into account?

[ayoub indjaren]

hi how are you , please can you help with this issue if you have found the solution

thinks

Answer 1

[ameya umrani]

Even after installing the necessary libraries the error "The Arduino source 'Ultrasonic/Ultrasonic.h' for libraries 'JRodrigoTech/HCSR04' cannot be found. Install the 3P library source first and try again "still exists

[ayoub indjaren]

hi how are you , please can you help with this issue if you have found the solution

thinks

Answer 2

[ibra]

First download the file from this link

https://www.mathworks.com/matlabcentral/fileexchange/57898-hc-sr04-add-on-library-for-arduino

there is another file in the describtion, download it and put it in the arduino file in matlab

C:\ProgramData\MATLAB\SupportPackages\R2016b\3P.instrset\arduinoide.instrset\arduino-1.6.13/libraries

or type arduinoio.IDERoot in command window to see the directory of the file

if you get this error:

Cannot program board Uno (COMX). Please make sure the board is supported and the port and

board type are correct.

then rename the Arduino folder in Documents into anything else. and open the arduino.exe

from this folder (C:\ProgramData\MATLAB\SupportPackages\R2016b\3P.instrset\arduinoide.instrset\arduino-1.6.13/libraries)

you'll get this message "The sketchbook folder no longer exists. Arduino will switch to the default sketchbook location , and create a new sketchbook folder if necessary. Arduino will then stop talking about himself in the third person."

also it will help if you run matlab as an administrator

Answer 3

[Hari Desanur]

Note that the HCSR04Example.m from the 'HC-SR04 Add-On Library for Arduino' requires MATLAB R2016a or higher and MATLAB Support Package for Arduino Hardware.

Make sure that the Arduino Support Package is installed correctly by running this command -

>> matlabshared.supportpkg.getInstalled

Ensure that you have followed the installation steps mentioned in this link such as renaming the unzipped folder to ‘Ultrasonic’.

Check if MATLAB is able to detect the add-on library by executing the "listArduinoLibraries" command. You may have to restart MATLAB after installing this library.

[RIKESH P MATHEW]

How can we use sonar sensors in earlier version of matlab. am using matlab 2015a. am using HC-sr04 and a UNo board

[Jayanta Deb]

The sensor library doesnt work with 2015 version. It strongly recommends to use 2016 or higher version.

[ameya umrani]

Answer 4

[Arpita Agrawal]

Hi Ameya,

Please ensure that you have installed the 3P library of the Ultrasonic sensor from https://github.com/JRodrigoTech/Ultrasonic-HC-SR04/archive/master.zip

Refer to instruction on the doc page https://in.mathworks.com/matlabcentral/fileexchange/57898-hc-sr04-add-on-library-for-arduino to install this library.

Thanks Arpita

[ameya umrani]

Actually did all the steps mentioned. Still the problem remains. I can also see the HCSRO4 in the list of avaiable libraries but, when given the command a = arduino('COM4', 'Uno', 'Libraries', 'JRodrigoTech/HCSR04'); it says it is missing a Ultrasonic.h file which i can see in the library. i also checked for the path but all seems fine to me

[Arpita Agrawal]

Hi Ameya,

Please contact MathWorks Technical Support, they will work with you to resolve this issue.

Thanks Arpita

[ayoub indjaren]

hi how are you , did you solve the problem sir because i'm stuck with it right now , any clue plz

[Arpita Agrawal]

Hi Ayoub,

Hope you are doing well. Please note that the Legacy HC-SR04 Add-On Library for Arduino - File Exchange - MATLAB Central (mathworks.com) is supported only for R2016a-R2018b. If you are using MATLAB version R2019a and above, this functionality is integrated into MATLAB Support Package for Arduino Hardware. More information on connecting ultrasonic sensors with Arduino thru MATLAB from R2019a is available in Connection to ultrasonic sensor on Arduino hardware - MATLAB (mathworks.com).

I hope this helps. For further assistance, kindly reach out to MathWorks Technical Support.

Regards

Arpita