How to get compass data in arduino?

[admin]

Okay Thank you!!
Yes it is from the mobile beacon.
How it works is that, these raw distances are inputted to the EKF of ardupilot which then computes the position of the vehicle!
https://github.com/ArduPilot/ardupilot/ ... d.cpp#L390
This is why

Just for me to understand. So, basically, you need the same what we currently already have for modem, also on the mobile beacon, right? Raw distances. And then you do the mathematics, filtering, etc. by yourself. Correct?

Exactly! The Kalmann filter in the ardupilot code already does the triangulation since it has to support multiple beacons. Now since marvelmind already gives us the XYZ of the vehicle, this is supplied as back calculation and reliabilty based on the accuracy. The accuracy of the info is now hardcoded as +/- 2cms! It would be nice to have some sort of accuracy info too supplied if possible? But its not too important.
The kalmann filter will use the raw distances and compute the XYZ and does a check between the given values and calculated values.

So yeah just need the info what the modem shows, the raw distances, also in the mobile beacon side!

We discussed this with the team in the past. We will discuss again.
The issues is that we steadily increase the radio traffic load. It becomes heavy and reduce update rate further, especially, on 38kbps. Besides, this once again changes the radio protocol

But I see the benefits. We will get it sooner or later. Perhaps, pretty soon.

[amolad]

BTW, the coordinate system we see on the dashboard is following ENU (East, North, Up) coordinate system right? and not NED (North, East, Down) ?

[amolad]

Just for me to understand. So, basically, you need the same what we currently already have for modem, also on the mobile beacon, right? Raw distances. And then you do the mathematics, filtering, etc. by yourself. Correct?

Exactly! The Kalmann filter in the ardupilot code already does the triangulation since it has to support multiple beacons. Now since marvelmind already gives us the XYZ of the vehicle, this is supplied as back calculation and reliabilty based on the accuracy. The accuracy of the info is now hardcoded as +/- 2cms! It would be nice to have some sort of accuracy info too supplied if possible? But its not too important.
The kalmann filter will use the raw distances and compute the XYZ and does a check between the given values and calculated values.

So yeah just need the info what the modem shows, the raw distances, also in the mobile beacon side!

We discussed this with the team in the past. We will discuss again.
The issues is that we steadily increase the radio traffic load. It becomes heavy and reduce update rate further, especially, on 38kbps. Besides, this once again changes the radio protocol

But I see the benefits. We will get it sooner or later. Perhaps, pretty soon.

Awesome great to hear! I understand the traffic will increase a lot. But great that it has a possibility of being considered

[Filda]

any one help me how to get compass data from hedgehog to arduino?
thanks

[smoker77]

Hello,

The attached example allows to get raw compass, gyro and accelerometer data from hedhehog to arduino via UART.