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<blockquote data-quote="suprPHREAK" data-source="post: 22038" data-attributes="member: 1505"><p>First Answer: All sensor calibration has a range which is considered "in the green". If you calibrate the IMU with a 2-degree tilt, it may still be "green", but obviously that tilt will be an issue, as stated. I don't know what that range is, but this is why I say it is important to calibrate, as instructed on a perfectly flat and level surface, so that you are as close to a perfect calibration as possible. The steps also involve having the drone at 90 degrees to the ground, so in a best case scenario, also use a proper vertical surface for those steps, although I find this is not as critical as the flat and level surface step.</p><p></p><p>Second answer is the same, there is a range of "good". When I last calibrated my compass, I got values as low as 30, but I think it goes yellow at 300. That's a big "OK" range. So, if you calibrate at 280, the drone says this is OK, but then you only need 20 points interference to get an error. I am not sure what these numbers represent, specifically, but this is why a proper, interference-free calibration is required.</p><p></p><p>Point is: "green" is a range, and if you are near the outside of that range, you can get interference easier.</p><p></p><p>For the longer answer, I think I'll make a separate post, since this is a common question anyway.</p></blockquote><p></p>
[QUOTE="suprPHREAK, post: 22038, member: 1505"] First Answer: All sensor calibration has a range which is considered "in the green". If you calibrate the IMU with a 2-degree tilt, it may still be "green", but obviously that tilt will be an issue, as stated. I don't know what that range is, but this is why I say it is important to calibrate, as instructed on a perfectly flat and level surface, so that you are as close to a perfect calibration as possible. The steps also involve having the drone at 90 degrees to the ground, so in a best case scenario, also use a proper vertical surface for those steps, although I find this is not as critical as the flat and level surface step. Second answer is the same, there is a range of "good". When I last calibrated my compass, I got values as low as 30, but I think it goes yellow at 300. That's a big "OK" range. So, if you calibrate at 280, the drone says this is OK, but then you only need 20 points interference to get an error. I am not sure what these numbers represent, specifically, but this is why a proper, interference-free calibration is required. Point is: "green" is a range, and if you are near the outside of that range, you can get interference easier. For the longer answer, I think I'll make a separate post, since this is a common question anyway. [/QUOTE]
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