How to continuously real-time plotting graph from arduino to matlab (10k Variable Resistor)

Hello and good day to all the experts and visitors of Mat-Lab, I am a mechatronic student and now facing problem trying to interface matlab and arduino..

I am trying to real-time plotting graph from arduino to matlab with (10k variable resistor), but the graph will stop plotting after reach the Maximun X-axis (I set 0-1000).

Can it continuously real-time plotting the graph non stop? full of appreciation or teaching me to solve it.

the code is shown below:

a = arduino('COM3');
interv = 1000;
passo = 1;
t=1;
x=0;
while(t<interv)
b=a.analogRead(0);
x=[x,b];
plot(x);
axis([0,interv,0,1024]);
grid
t=t+passo;
drawnow;
end

[Kerone Naidoo]

Hi,

just dont bound the axis, remove the bounds on the axis and that should allow it to continually plot the voltage.

Answer 1

[David Sanchez]

You just have to change the axis when the highest value is reached:

axis([interv,2*interv,0,1024]); % adapt values to your needs

[Charles Lim]

Very Thank you for replied

I set interv = 1000

after I change this code

the x-axis started from 1000 to 2000

how do I start from 0 - 1000 after the highest value is reached auto start from 1000 - 2000 , continuously non stop ?

Answer 2

[anand]

just make use of while(1) after a = arduino and at the last make use of a end function this solves your problem

Answer 3

[Sanjay Raam]

you need not set axis between 0to1024

instead give the following statement

axes auto;

by the way, thanks for your program... it was useful for me to learn!!

Answer 4

[khoulod ghanem]

I am trying to plot current-voltage curve from Arduino to Matlab , can you help me to start ??

Answer 5

[ravi kumar]

This did not work for me. I tried this one: Real Time Analog Voltage in Matlab using Arduino it uses line function. anybody knows how to scroll the time line?

[prasad noolu]

try this code: clear all

a = arduino

x = 0;

for k = 1:1000

    b = readVoltage(a, 'A0');

    x = [x, b];

    plot (x);

    grid;

    drawnow;

end

Answer 6

[Madhu Govindarajan]

Checkout this video - https://www.mathworks.com/videos/plotting-live-data-of-a-temperature-sensor-using-arduino-and-matlab-121317.html?s_tid=srchtitle

HTH, Madhu