Starling 2 Max Ardupilot GPS
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We are seeing some oddness when it comes to running Ardupilot on the Starling 2 Max.
We are unable to get really any GPS satellites, and the driver seems to be acting a bit weird.
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We are able to get this working fine on PX4 - we run this pretty consistently. So, doesn't point to wiring
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We tried Arducopter 4.6.3, 4.7, and 4.8 - we had the best luck on 4.7. But, even on that version weird things happen - like GPS_RAW_INT showing up with a lat and lon, but showing no visible satellite:

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when indoors, only v_acc is updating...which feels odd: https://www.loom.com/share/3379c1aafcd74c95aa65e7f3af09a488
Any thoughts / ideas on where to look would be super. Thanks!
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I did the following and was able to get it
- installed arducopter 4.7
- disabled serial2_option for mavlink forward
- configured compass
- configured acceleromter
- turned off GPS_AUTO_CONFIG
- set SERIAL3_BAUD to 115200