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Drifing when moving forward slowly
722 11 2017-3-9
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steelej80.googl
lvl.3
Netherlands
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Hey Guys,

I got a compass error on my inspire2 last night and today calibrated OK but I noticed when flying forward slowly the I2 would drift with the wind, could be going as far as 10-15ft off centre. Anyone seen this with their inspire? I'm planning on doing an IMU and Compass calibration now but just curious if others see this behaviour and I've just not noticed it before(unlikely but wanted to check )

John.
2017-3-9
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Alastair
Second Officer
Flight distance : 96631 ft
United States
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I'd be curious to know if the sensor readings were within their parameters.
2017-3-9
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steelej80.googl
lvl.3
Netherlands
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I calibrated IMU and Compass and it appears to be better but still a little drift. I don't know if it did that before because now I'm being hypersensitive to any movement that I may have just instinctively corrected before. Can anyone else confirm that slow forward flight in the wind causes a slight drift?

John.
2017-3-9
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allanart
First Officer
Flight distance : 850440 ft
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United Kingdom
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Hi John.
I've flown my I2 is some moderate winds (up to 15 knots) and have not noticed any drift in P-Mode.
Allan
2017-3-9
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steelej80.googl
lvl.3
Netherlands
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Thanks Allan, so it's perfectly straight no movement left or right at all?

John.
2017-3-9
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ocelot27
lvl.3
Flight distance : 1163894 ft
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steelej80.googl Posted at 2017-3-9 11:28
Thanks Allan, so it's perfectly straight no movement left or right at all?

John.

I have seen the same issue in wind - just yesterday I was flying slowly just above the deck (~1.5M) with just forward stick input and the craft flew diagonally with the wind requiring correction. I have not yet tried recal on the compass since the big 3/17 FW update but the IMU and compass both show normal stats...

-john (there's more than one of us...)
2017-3-9
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steelej80.googl
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United Kingdom
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While it's not good that we've both observed this behaviour, I'm glad I've got company

Would be interested to hear if anyone else has seen this.

John.
2017-3-9
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DemolitionMan14
Second Officer
Flight distance : 1433432 ft
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United States
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I just witnessed this issue with my I1 this past week.  When I hovered in high winds it was rock solid, when I flew using waypoints it flew perfectly straight, but when I flew in in P-Mode there was significant drift.  My thinking is even though you have the GPS active when flying manually in P-Mode there is no GPS lock to a fixed position at the end of the flight pattern as there is using waypoints or when you hover.
2017-3-9
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steelej80.googl
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United Kingdom
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Interesting, I'll try tap fly tomorrow to see if it locks onto a course. Like your I1 my I2 is rock solid in a hover.

John
2017-3-9
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steelej80.googl
lvl.3
United Kingdom
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Would also be good if someone from DJI can comment on this, is it expected behaviour?

John
2017-3-9
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Farnk666
Captain
Flight distance : 1711394 ft
United States
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Inspire 1 has not been able to keep a straight course in GPS assisted flight since V1.3 of the firmware.
2017-3-9
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Alastair
Second Officer
Flight distance : 96631 ft
United States
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Farnk666 Posted at 2017-3-9 15:05
Inspire 1 has not been able to keep a straight course in GPS assisted flight since V1.3 of the firmware.

Ah yes!  1.3, I remember it well.  Miss those days.
2017-3-10
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