Quick Tips on Methods to Interface in Matlab With Arduino

Arduino can be considered to be one of the most favorite prototyping platforms of hobbyists and makers. On the other side, Matlab is one of the professionals’ numeric computing tools that is used by scientists and engineers. Interfacing Matlab with Arduino makes things more interesting, which is the objective of hobbyists and entry-level users, but it is a complicated tool that experts use.

What do you mean by Arduino?

It is an open-source electronic stage that is used for making various electronics projects. With software and hardware to generate, design, and testing the different electronics items. The hardware involves a microcontroller with several other electronic parts, which can be coded by using the software to do some specific task practically. Because of its simple programming, the Arduino language is exceptionally simple that can be used by everyone who has a passion for electronics to write codes without the understanding of complicated programming and calculations. It has specifically structured boards that can be coded by using the Arduino Programming with Matlab programming and other programming too.

Arduino Applications

There are some of the commonly known Arduino application which is listed below:

XOD: A visual coding language for Arduino.

Arduboy: Arduino, which is based on the gaming console.

OpenEVSE: An open-source Arduino which is based on an electric charger.

Ardupilot: An Arduino which is based on drone software and hardware.

How does Matlab with Arduino interfacing work?

A programmer can use Arduino IDE to type and upload the codes to Arduino. It is good for the regular uses, but if one wants to plot some kind of collected data from the sensors, then the coding will become a complicated and time-consuming work.

Matlab is used to address various problems in Arduino coding with two different kinds of processes:

  • Creating algorithms that can be run as a standalone code on the Arduino board.
  • Writing, reading, and analyzing the data from the given sensors. 

To achieve the interfacing of Arduino, one requires an extra package tool for Matlab, which is known as Matlab Support Package for Arduino. It is an official tool that is released by Matlab. This is accessible at zero cost on their official website (one requires to hold an account to download its package). 

Coding of Matlab with Arduino

Now comes to its programming and understand how to use the code of Matlab with Arduino. To do this, we will use the Arduino Mega Board, which has an onboard LED that is linked to Digital Pin 13 of the Arduino board.

We will type a Matlab code in order to blink the given LED for almost 10 times, and it will have a delay of 1 second. Besides this, one can link an extra LED to the Digital pin 13 to a current limiting resistor. The following picture will show a circuit diagram with this connection. 

Now, in the file tab, you need to go to the New option and choose the Script option. You will show a blank editor where you can paste your program in the given section. After this, save your file with an extension .m file, which is used for Matlab codes. 

NOTE: Change the Arduino board and COM Port as per your requirements in the program. 

Once you save the file, you have the option of a Run file, so click on it. The Matlab code can associate with your Arduino board and execute the desired output. There is an essential point that needs to be noted that the code does not upload to the board of Arduino if one restart or reset the Arduino Board. The encoded code gets a loss, and one requires to perform all the necessary steps once again. There are several other methods to code the Matlab with Arduino, and we have listed a program below:

Program of Matlab with Arduino

% generate an Arduino object as

 x= arduino (‘com8’, ‘Mega2560’);

%initialise the loop so that it can blink the given LED for almost 10 seconds

for i = 1:5;

writeDigitalPin (x, ‘D13’, 1);

pause(1);

writeDigitalPin (x, ‘D13’, 0);

pause(1);

end

%terminate the contact with Arduino board

clear x

Applications of Matlab with Arduino interfacing

  • To interface the programming of Matlab with Arduino, one can collect the information using the sensor from the board of Arduino and initiate plotting the different kinds of graphs.
  • One can also generate the Graphical User Interface (GUI) to control the Arduino function using the codes of Matlab.
  • There are various projects that are related to signal processing as well as image processing, which can further be executed with the help of Matlab with Arduino.
  • There are some projects that can be used as Object tracking, Color detection, Face detection, and much more.

The key points about how to use Matlab with Arduino

  • Download the Arduino Support Package to execute Matlab with Arduino from their official website at zero cost and install the package.
  • Link your Arduino board with your computer that runs the Matlab program and check whether the Arduino can connect with Matlab or not.
  • Make a simple and effective circuit that can blink an LED that is linked to one of Arduino’s Digital Pins.
  • Write a code of Matlab that can blink the LED and save the program as a .m file.
  • Execute the Matlab code, and the connected LED with Arduino that can blink according to the code.

Conclusion

This post has provided all the general information about how to use Matlab with Arduino that includes the meaning of Arduino, its application, methods to interface Arduino, coding, and the key points about how to use it. Now, one can easily interface the Arduino with the Matlab software and use it as per their accordance. 

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