jtrjr
Second Officer
Flight distance : 4341 ft
United States
Offline
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Mark,
Raybro sent a link to the whole fiasco. It has a number of ways to do the advanced IMU calibration. I suggest you try this first. This is what I did and it worked perfectly for me. I don't know if it will work for you but I think it's an easy way to start before you go opening up the shell. I'll just paste the way I did it in this post. If it doesn't work than you should thoroughly read what the others have done in the link Ray sent and try some of their methods.
"Okay Fella's here's what I did. A hybrid of what you guys have done. I was hoping I wouldn't have to open the shell again. I want to avoid removing the screws over and over again. Wasn't sure whether it would work without leveling the IMU itself but thought I'd give it a shot.
Found the most level surface I could find to put the Phantom on.
Got 4 plastic spacers from an old flat screen TV mount kit that fit perfectly over the motor studs
Took apart a picture frame that had a 10" x 13" pane of glass in it. (Standard size, I think)
Put the spacers over the studs
Laid the glass across the 4 spacers
Took a 2' straight level and leveled from front to back, side to side and then across all posts
I used standard business cards and started shimming
It took (looking from the rear at the battery: RR-5, RF-5, LR-1, LF-3 to get level in every position
Ran the advanced IMU calibration"
Worked great for me. Hope it helps!
Jerry
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