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Almost lost my Spark over water, Compass and IMU errors, why?
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<blockquote data-quote="Pashasdad" data-source="post: 9065" data-attributes="member: 651"><p>Here is a link to the flight data:</p><p></p><p><a href="https://drive.google.com/file/d/0B7FokEuJXSNFMDBqUmtFcGxWY2M/view?usp=sharing" target="_blank">DJIFlightRecord_2017-08-08_[20-06-44].txt</a></p><p></p><p>BTW this was the second flight of that same day with a second battery. First flight was about 12 minutes long. There were no such issues on the first flight.</p><p></p><p>In fact these errors did not show up until after 11 minutes into flight #2. I would think if there was a compass cal problem it would have shown up much earlier. Calibration was done the day before in a wide open field, several flights were undertaken prior to this one, There was no need for compass cal just in case it is thought it was required.</p><p></p><p>In fact I had deliberately checked that the red directional arrow in the lower left box in DJI GO4 and it actually was pointing in the direction the aircraft was pointed to prior to launch! I always do this now after a prior issue with a fly away and crash on my original Spark that was replaced by DJI for this one.</p><p>This reduces the possibility of compass errors at calibration!</p><p></p><p>Additional flight data:</p><p>text file:</p><p><a href="https://drive.google.com/file/d/0B7FokEuJXSNFMDBqUmtFcGxWY2M/view?usp=sharing" target="_blank">https://drive.google.com/file/d/ ... 2M/view?usp=sharing</a></p><p></p><p>Here is .dat file:</p><p><a href="https://drive.google.com/file/d/0B7FokEuJXSNFT21UdUwxdXFTVEk/view?usp=sharing" target="_blank">https://drive.google.com/file/d/ ... Ek/view?usp=sharing</a></p><p></p><p>Here is Black box Data:</p><p><a href="https://drive.google.com/drive/folders/0B7FokEuJXSNFejNwZlZtelA5QUk?usp=sharing" target="_blank">https://drive.google.com/drive/f ... elA5QUk?usp=sharing</a></p></blockquote><p></p>
[QUOTE="Pashasdad, post: 9065, member: 651"] Here is a link to the flight data: [URL='https://drive.google.com/file/d/0B7FokEuJXSNFMDBqUmtFcGxWY2M/view?usp=sharing']DJIFlightRecord_2017-08-08_[20-06-44].txt[/URL] BTW this was the second flight of that same day with a second battery. First flight was about 12 minutes long. There were no such issues on the first flight. In fact these errors did not show up until after 11 minutes into flight #2. I would think if there was a compass cal problem it would have shown up much earlier. Calibration was done the day before in a wide open field, several flights were undertaken prior to this one, There was no need for compass cal just in case it is thought it was required. In fact I had deliberately checked that the red directional arrow in the lower left box in DJI GO4 and it actually was pointing in the direction the aircraft was pointed to prior to launch! I always do this now after a prior issue with a fly away and crash on my original Spark that was replaced by DJI for this one. This reduces the possibility of compass errors at calibration! Additional flight data: text file: [URL='https://drive.google.com/file/d/0B7FokEuJXSNFMDBqUmtFcGxWY2M/view?usp=sharing']https://drive.google.com/file/d/ ... 2M/view?usp=sharing[/URL] Here is .dat file: [URL='https://drive.google.com/file/d/0B7FokEuJXSNFT21UdUwxdXFTVEk/view?usp=sharing']https://drive.google.com/file/d/ ... Ek/view?usp=sharing[/URL] Here is Black box Data: [URL='https://drive.google.com/drive/folders/0B7FokEuJXSNFejNwZlZtelA5QUk?usp=sharing']https://drive.google.com/drive/f ... elA5QUk?usp=sharing[/URL] [/QUOTE]
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Almost lost my Spark over water, Compass and IMU errors, why?