I am thinking that the yaw coupling is due to EMF from the camera...... the HF G is really the most sensitive board to EMF I have ever used.
Is there a technical reason that is it most sensitive than the HFpro board with the GPS?
No, something changed between v1.3 and this new v1.6 version. My setup has not changed at all. Below is the video from a few days ago, that has v1.3 loaded. You can see that although there's the already discussed "jello" issue and the tilt gains are pretty far off, there's no yaw coupling issue.
The only thing I did this morning was to load the latest v1.6 firmware in, and I tweaked the tilt gains a bit. That's it. Here's the result:
When you yaw left, it rolls left and when you yaw right it rolls right. Dan, at HF, suggested I try turning off the "Magnetmometer assisted heading" box in the new Gimbal Control tab, but when I checked this, it was already off. I tried saving settings a few times, and I tweaked the tilt gains a bit more (very close now...), saved them again, and rebooted the gimbal, but it didn't seem to help much. Also, I can't seem to get it to do the yaw problem when I just turn everything on, and manually yaw the platform around. As soon as I fire it up outside, with the motors running and with it in the air, and I yaw left and right off the original heading, the roll coupling occurs again.
I know this really does point to a weird EMI issue, but it didn't start doing this until I loaded v1.6. Also, there's really nothing that is very close to the board, as you can see in the attached pics. There's a good three inches down to the top of the RX100, with a 3mm CF plate in between. The servos, ESCs and motors are even farther away.
Next up, I'm going to see about going back to v1.3, and hope the problem goes away. We'll see.
-- Gary
