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How to send data from MATLAB to Arduino an?

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Akarsh Sinha
Akarsh Sinha 2012년 12월 16일
댓글: Reyhane Jalil 2021년 9월 2일
Hi, I was wondering how do I send data from MATLAB , say a number ,5 to my Arduino board. The board contains some code in it. For simplicity lets assume it multiplies the incoming number with 4. The output , 20 ,should be displayed in the command window. Is this possible ? I know about a.roundTrip('data') function. But the one in my query is something different. (I work on R2010a)

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Jonathan 2012년 12월 18일
편집: Jonathan 2012년 12월 18일
I suppose you could do it through serial connections. If you have a serial port (or a serial to USB adapter and driver) you can create and open a COM object in MatLab to communicate with the Arduino board (usually arduino terminals D0 and D1 are serial TX/RX).
The code would be something like:
arduinoCom = serial('COM3','BaudRate',9600 . . . ); % insert your serial
%properties here
sendData = 5;
fprintf(arduinoCom,'%i',sendData); %this will send 5 to the arduino
fscanf(arduinoCom) %this will read response
%or use BytesAvailableFcn property of serial
You will have to look into using the correct terminators and do a bit of configuration with that. Let me know if this makes sense. Usually terminators are something like a linefeed / carriage return or an symbol (*, $, etc.)
  댓글 수: 2
Break  Freezy
Break Freezy 2015년 3월 12일
Please can you help me , i wanna send 4 data from matlab to arduino how to realise without taping in command of matlab ?

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추가 답변(4개)

Nthai Papala
Nthai Papala 2015년 11월 19일
I need assistance. I need to send a binary data, say random bits (1 byte for example) from one computer to the other using LED and a phototransistor. The data must be generated in matlab and be sent over a serial port through arduino. I am using matlab 2015a and Arduino Uno and i need codes for both Arduino and Mat Lab.
Thanks in advance
  댓글 수: 3
Reyhane Jalil
Reyhane Jalil 2021년 9월 2일
hi i have same project ...can you send me detail of your

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Rouis Jihene
Rouis Jihene 2017년 7월 20일
편집: Walter Roberson 2017년 7월 20일
I want to send a value from matlab to arduino,i tried this code but it doesn't work:
in Arduino:
void setup() {
void loop() {
if (Serial.available()) {
In matlab:
Do you have any solution ? Please help and thanks.

Walter Roberson
Walter Roberson 2017년 7월 20일
  댓글 수: 6
Rouis Jihene
Rouis Jihene 2017년 7월 20일
Same problem! Do you have any other solution?(using Bluetooth or something else)

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Syahmi Noordin
Syahmi Noordin 2018년 4월 29일
편집: Syahmi Noordin 2018년 4월 29일
Hi, I want to ask about how to transfer more than one value from matlab GUI to arduino? I put 3 edit text functions in the Gui so I want the user to input value in each edit text function and those three values must be send to arduino for further calculation. Thanks.
  댓글 수: 1
Walter Roberson
Walter Roberson 2018년 4월 29일
get() the String property of the handles. fprintf(a, '%s %s %s\n', str1, str2, str3) where a is the arduino connection. This assumes that you want spaces between the strings and newline after the group of three.
You should probably do some sanity checking to be sure the strings are not empty and represent valid numbers.

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