Magnetometer Explained | Measure rotational angle / turn coordinator using Hall Effect & DCM

[@sijinahi3675]

any method or equation to find the value read is a valid x, y, z value from magnetomter sensor?

[@keithschaub7863]

quick question. I am trying to use it as a compass for my driverless RC car. To calibrate, I drive the car in a circle for 10 seconds to get the cal offsets. That seems to work, but only in a very limited area (i.e. pretty much only in the tiny area of calibration). As soon as the car gets close to a wall (doing all of this in my house), the degree changes by > 10 deg. So, my point and question is, this is pretty much useless as a compass? However, we have compasses in our phones that seem to work pretty good in a multitude of environments. Why do the iphone compasses work so much better?

[@zyroxiot9417]

Thanks, 👍🏼🇧🇷

[@Fxiques]

Great, do you know how to calculate translation with acceleration?

[@others-makingofrpgvideogam4262]

Yeah, I have done that in one of the accelerometer video titled ESP32 feather and BNO055 calculate inclination angle or tilt angle. kzbin.info/www/bejne/j3aynoCurN2haJI you can check this one

[@Fxiques]

@@others-makingofrpgvideogam4262 but can you calculate the displacement in 3d space of this?

[@others-makingofrpgvideogam4262]

Yes, will do that. It is actually an important functionality for my project. As I need my human rigid model to move around. Please stay tune, it's coming soon.

[@Fxiques]

@@others-makingofrpgvideogam4262 great, to tell the truth I've been doing it for a long time and it's somewhat difficult to calculate the 3D tracking with the sensors, yes I've seen people who achieve it, but they don't share how they did it hehehehe I think it's normal

[@others-makingofrpgvideogam4262]

@@Fxiques Don't worry, Once I get there I will share how I would have achieve that. It will be 3 -4 videos away.