IMU sensor fusion viewer "HelperOri​entationVi​ewer"

Hi All,

I am working my way throgh the below ahrs filter fusion example but my version of matlab (2019a with Sensor Fusion and Tracking toolbox installed) seems to be having trouble recognising the function HelperOrientationViewer. Does anyone know if I require an additional toolbox to run this viewer or why this is not working?

https://au.mathworks.com/help/supportpkg/arduinoio/examples/estimate-orientation-inertial-sensor-fusion-and-mpu-9250.html?searchHighlight=helperorientationviewer&s_tid=doc_srchtitle

Many thanks!

Ben

Answer 1

[Honglei Chen]

You may have to open the example in MATLAB and click the "Open Example" button. That will copy all necessary helper functions into a local folder for you to run the example.

HTH

[Marco Caruso]

Thanks!

It worked!

Marco

[Benjamin9119]

Thank you Honglei Chen! Works perfectly!

[Talha Ali]

how to see where i s example folder

and how to copy

[Gayatri Menon]

Hi,

In the top right corner in the page, there is a 'Copy command' button. Clicking this button will copy the command required to open the example in MATLAB. Paste and execute the command in MATLAB command window.

Regards

Gayatri

Answer 2

[Marco Caruso]

I have the same problem!

[Ans Hafeez]

Facing same problem.

Getting another following error

Error in openExample (line 24)

metadata = findExample(id);

[Gayatri Menon]

Hi Ans Hafeez,

Which version of MATLAB are you using? The example is available in R2019a and above releases.

Regards

Gayatri

Answer 3

[ljp64]

Hi there, I am having the same problem with this page https://au.mathworks.com/help/supportpkg/arduinoio/ug/estimating-orientation-using-inertial-sensor-fusion-and-mpu9250.html

However, I cannot see an option to 'Open iExample' in Matlab. Am I doing something wrong?

Thank you

Laura

[Gayatri Menon]

Hi Laura,

There is "View MATLAB Command" in the rightmost corner. Click on it and you will see the following command

openExample('shared_fusion_arduinoio/EstimateOrientationUsingInertialSensorFusionAndMPU9250Example')

Execute the above in MATLAB.This will add required files in path.

Thank you

Regards

Gayatri

[Sameer Aftab]

when i am trying to open example i got htis why ?

openExample('shared_fusion_arduinoio/EstimateOrientationUsingInertialSensorFusionAndMPU9250Example')

Error using exampleUtils.componentExamplesDir (line 13)

Invalid argument "shared_fusion_arduinoio".

Error in findExample (line 18)

componentExamplesDir = exampleUtils.componentExamplesDir(component);

Error in openExample (line 24)

metadata = findExample(id);

[Aleena Rashad Warraich]

I cannot see view Matlab command option

[Gayatri Menon]

Can you check for 'Copy command' button in the top right corner of the page.

Thanks

Gayatri

[Shaik Arshad Salman]

I followed the above procedure but I am gettign this error in command window

>>openExample('shared_fusion_arduinoio/EstimateOrientationUsingInertialSensorFusionAndMPU9250Example')

Error using matlab.internal.examples.componentExamplesDir (line 16)

Invalid argument "shared_fusion_arduinoio".

Error in findExample (line 18)

componentExamplesDir = matlab.internal.examples.componentExamplesDir(component);

Error in openExample (line 30)

Answer 4

[yussif]

a = arduino('COM5', 'Uno', 'Libraries', 'I2C');

fs = 100;

imu = mpu9250(a,'SampleRate',fs,'OutputFormat','matrix');

GyroscopeNoiseMPU9250 = 3.0462e-06;

AccelerometerNoiseMPU9250 = 0.0061;

viewer = HelperOrientationViewer('Title',{'Visualization of Orientation'})

FUSE = ahrsfilter('SampleRate',imu.SampleRate, 'GyroscopeNoise',GyroscopeNoiseMPU9250,'AccelerometerNoise',AccelerometerNoiseMPU9250);

tic;

stopTimer = 100;

magReadings = [];

accelReadings = [];

gyroReadings = [];

while(toc<stopTimer)

[accel,gyro,mag] = read(imu);

magReadings = [magReadings;mag];

accelReadings = [accelReadings;accel];

gyroReadings = [gyroReadings;gyro];

fuseReadings = FUSE(accel,gyro,mag);

for j = numel(fuseReadings)

viewer(fuseReadings(j));

end

subplot(3,2,1);

plot(accelReadings);drawnow

title('Accelerometer Readings');

subplot(3,2,2);

plot(gyroReadings);drawnow

title('GyroScope Readings');

subplot(3,1,3);

plot(magReadings);drawnow

title('Magnetometer Readings');

end

%%magx_min = min(magReadings);

%%magx_max = max(magReadings);

%%magx_correction = (magx_max+magx_min)/3;