Magnetometer Errors and Calibration

In this video, I'll explain the various sources of error that affect magnetometer measurements. Then, I discuss how to calibrate your magnetometer sensor with the Magneto calibration software. Good luck!

Resources:

[micwroengr]

Unfortunately, the download link for Magneto no longer works. :'( If you know what happened to it, please comment below!

[swarnavchatterjee]

3 years later and it's still useful AF. Thanks a lot. Doing God's work man

[sirick]

Thats the best magnetometer calibration tutorial on the internet! And believe me i was searching for a good explanation for 3 days now. Everything worked as expected according to the instructions. Thank you for the info and the source code!

[Re-lxmd]

This video is incredibly useful. I'm making a project that requires the compass heading of a device that could be deployed anywhere in the country, so learning how magnetoneters are affected by changes in the local magnetic field and how to account for it has helped emmensly.

[cyklop]

very simple calibration and quite accurate -
ofsetX =(readX_max + readX_min) / 2 ;
ofsetY =(readY_max + readY_min) / 2 ;
//calibration correction of measurement data
Yread =danaY - ofsetY;
Xread =danaX - ofsetX;

[juanriano]

Good tutorial, the best i found>33

[jg]

Nice video !
In 8:30, why is A said to be symmetric? I mean, it could be not necessarily symmetric right?
Is there a physical reason to impose that constraint to A?

[fjrpilotnc]

@MicWro Engr - I was able to collect the data from NOAA and my magnetometer. Magneto outputs a 3x1 matrix and two different 3x3 matrices. Are all of these needed to accurately calibrate? I don't quite understand the relevance of all of the Magneto 1.2 output and what to do with them.

How do I apply the 3x3 and 3x1 matrices to my raw magX, magY, magZ readings to? Do you have the math to do this coded in C, C++? I don't do python but I could translate it to my cpp code.

[karimsherry]

hello and thank you for this great tutorial! the code link does not seem to be working, can you share a new link please?

[minhnhatleinh]

Hi, i also try to write the Matlab script to follow your resources but the center of the calibrated magnetometer still far from (0, 0, 0) around (30, 0, 40). Do you have any idea about that?

[ahmadyoussef]

Hello, your GitHun is giving me 404 error, So how can i access your HitHun repo

i Have a question:
So i want make the magentometer MPU9250 to be able to negate all the magnetic field and only detect the magnets I am trying to apply on it, So I am doing a project that i want to know the orientation of my magnet

[Solangizer]

It's very helpful. Thanks a lot!!

[ErArjunBala]

Really Informative Video, Thanks for The Detailed Explanation, Can you explain how we can use those calibrated values in Arduino Code.

[bsautner]

Thanks for this video. I've been trying to get a magnetometer to give me a compass heading for a while. I did everything in this video but I can never find how to apply the calibration to the raw x and y values.

[SharaPk]

very helpful and well explained video. Thank you :)

[abdulrahmanbadran]

where's your code?, In github it says page not available

[Foxie-]

6:30 – Could you please advice where to find the "Big math", which describes the way acceleration affects the magnetometer reading?

[davidvanderwee]

Hi, great video, but you didn't actually mention how to apply the calibration adjustments.

[mansudshaik]

Code link doesn't working, could you fix it

[williampixton]

Hi, great video. I notice you took the readings in your bedroom but I assume you will be flying your drone elsewhere. If that is the case, will your readings and the corrections you have applied still be valid where you intend to fly the drone?