How I can get 2nd GPS data and what setting I have to do to use 2nd GPS?

ArduPlane Plane 4.5
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I am using Pixhawk 6c Autopilot. I have connected 2 GPS from this Autopilot. I powered my Pixhawk and armed it, and after some time I disarmed it. The .bin file is created in the SD card. I converted this .bin file to .mat matlab file. Now I want to see the data collected from GPS1 and data collected from GPS2. Where will I get this 2 data?..

What are the settings I have to change to get the data of 2nd GPS in the matlab file along with the 1st GPS data…Please help.

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If anyone have any suggestions please let me know. It will be a big help.

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Without knowing your setup, including components used, parmeters and the .bin file nobody can really help you.

1 Like
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Please look into the picture. I have shown the Photo of the setup which we are using. Also I am attaching a .bin file of this setup. Please let me know how I can get the data of GPS1 and GPS2 Data simultaneously in the SD card. Please let me know if I have to change some parameters anywhere.

This is the .bin file of the experiment - 00000001.BIN - Google Drive

IMG_20240426_165408
IMG_20240426_1654081920×1440 355 KB

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Please give some suggestions, how i can fix this.

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You have only activated one GPS (GPS_TYPE,1). I assume you have not configured anything and are using the default parameters. To activate the second GPS, this must be activated in the parameters (GPS2_TYPE,1). See also here GPS Blending (aka Dual GPS) — Plane documentation (ardupilot.org)

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Thanks. Now I am getting GPS_0 and GPS_1 data in the SD card. I have used the bellow settings.

  • GPS2_TYPE = 1 / “AUTO” or the specific number corresponding to the type of GPS
  • GPS_AUTO_SWITCH = 2 / “Blend”. Alternatively set to 1 / “UseBest” to only use the better GPS. The better GPS is decided based on the GPS’s self reported accuracy.

It says that… " The first GPS’s data appears with an instance number of 0 in the GPS and GPA messages. (ie GPS[0].x, GPA[0].x messages) The second GPS’s data appears with an instance number of 1 in the GPS and GPA messages. The blended GPS data appears with an instance number of 2 in the GPS and GPA messages."

But I am not getting the data for the blended that means I am not getting any instance number of 2.

Can you please figure out the problem. What should I change to solve this problem. I am attaching the .bin of the experiment along with this. Please help to solve this issue.

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Please help to solve this issue …!!!

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Your flight controller firmware probably does not support GPS blending. Have you compiled custom FW for the FC?

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Moreover, what would ever be gained by blending an excellent module’s output (the F9P) with a largely inferior one (the M8N)?

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Good point Yuri, I did not notice that.