How to send a signal from arduino to MATLAB?

Question

I have used a load cell. Arduino is sending the load perfectly. When the load sensed by arduino crossess some value I want to send a simple signal to matlab. Then a MATLAB should capture the image. If someone has already worked on it please share how you have done it!.

Hi. I'd also try using a serial communication interface, for sake of simplicity. — Matthias W.
– Matthias W., Commented Apr 23, 2016 at 7:51

Community · Accepted Answer · 2017-04-13 12:50:09Z

2

You could use the MATLAB Support Package for Arduino or plain old serial communication. The former is pretty straightforward; see the documentation. Below is a simple example of how the latter would work.

Arduino:

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

void loop() {  
  int load = getLoad();      
  if (Serial.available()) {  
    Serial.println(load);
  }
}

MATLAB:

% Connect to Arduino
s = serial('COM1', 'Baudrate', 9600, 'Parity', 'none', 'Databits', 8, 'Stopbits', 1);
fopen(s);
set(s, 'Timeout', 2000, 'Flowcontrol', 'none');
s.ReadAsyncMode = 'continuous';

% Read data from Arduino
load = fscanf(s, '%d');

% Close connection when done
fclose(s);

Check out the following resources for more details:

edited Apr 13, 2017 at 12:50

CommunityBot

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answered Apr 26, 2016 at 22:27

mbaytas

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2 Comments

PramodHegde Over a year ago

Thank you mbaytas. Does your code work with all types of arduino ?

mbaytas Over a year ago

The general idea is the same, not only for all types of Arduino, but other devices that communicate over a serial port as well. I suggest you take a moment to look at the resources I posted above, because they cover a lot of implementation details which can make your life easier.

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