Need help with plotting accelerometer readings from MPU6050 + Arduino.

I've written some code in Arduino to collect accelerometer readings from my MPU6050. I now need to plot live readings on a graph on MATLAB but I don't know where to begin. Can anyone point my in the right direction please, im a total newbie with MATLAB.

Thank you in advance!

[WAN NOR NAZIRA MUSTAPA KAMAL]

Hi. I am Nazira. I want to ask may you share the code in Arduino the one that you mention? Because I also now do a project to monitor real time of an earthquake by using MPU6050 with Arduino and Matlab. Do you mind to help me?

Answer 1

[magate]

Import tool should be the easiest way to get started. Good luck!

[Hannah Sabir]

Hi, Thank you for this, however I want it to be a live reading so i'll need to make a connection..

[magate]

That is going to be a little more complicated. You could try this or just opening a serial connection.

Answer 2

[Mustafa Abu-Mallouh]

Write a loop that updates a dataset with new data pulled from the sensor every iteration. Then, plot the updated dataset on the same figure within the iteration. See example below:

i = 0; % Initialize counter
max_data_len = 360; % Desired dataset length

% Initialize variable size for speed
Angle = zeros(max_data_len,1);
Accel_X = zeros(max_data_len,1);

while i < max_data_len
    
    i = i+1; % Step iteration
    
    Angle(i) = i; % Use counter variable as angle
    Accel_X(i) = sind(i); % Store sine of angle
    
    figure(1) % Ensure plotting on same figure
    plot(Angle,Accel_X); grid
    xlabel('Angle [degrees]')
    ylabel('Sine of Angle')
    
end

Answer 3

[Gayatri Menon]

Hi,

For Arduino board, you could use mpu6050() to connect MPU6050 sensor

MPU6050 - Arduino

a = arduino;
imu = mpu6050(a);
xlabel('Count');
ylabel('Acceleration (m/s^2)');
title('Acceleration values from mpu6050 sensor');
x_val = animatedline('Color','r');
y_val = animatedline('Color','g');
z_val = animatedline('Color','b');
axis tight;
legend('Acceleration in X-axis','Acceleration in Y-axis','Acceleration in Z-axis');
stop_time = 100; 
count = 1;
tic;
while(toc <= stop_time)
      [accel] = readAcceleration(imu);
      addpoints(x_val,count,accel(:,1));
      addpoints(y_val,count,accel(:,2));
      addpoints(z_val,count,accel(:,3));
      count = count + 1;
      drawnow limitrate;
end

Hope this helps

Thanks

Gayatri