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Why are FCs set up so you have to roll when you yaw? Can you configure yaw to be applied last? (lemmy.world)

submitted 3 days ago by [email protected] to c/[email protected]

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I was teaching someone to fly in a simulator (FPV SkyDive) and they were very confused by the way you turn. I certainly remember finding it unnatural, but now I'm used to it: With the drone pitched forward slightly for normal flight, you would coordinate a yaw right and roll right to make a smooth turn.

Is there a reason it's not set up so that pitch/roll attitude are maintained as you yaw? So if you're pitched forward 30 degrees and the horizon is level, when you yaw those both stay the same? Are there moves that are easier using the existing standard? Or on the other hand, are there folks who have changed their setup (either FC settings or tx mixes) for different behavior?

Thanks for any insights!

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[–] [email protected] 4 points 3 days ago* (last edited 3 days ago)

Are you talking about Acro mode?

In acro mode, or angle mode, you change the angle of the quadcopter. You don’t move in space, you change the angle the copter is moving through space.

I’d really like to show it in person - when you’re tilted forward 30° to fly forward, and then you roll, you roll around the already tilted axis, so you need to yaw to counteract a little bit. Also, the motion of turning tilts the drone forward, so you need to actually pitch backwards to combat that.

[–] [email protected] 3 points 3 days ago* (last edited 3 days ago)

I'm not sure what you're discussing - FPV quads should be able to yaw (when flat) without experiencing any rolling. If your flight controller isn't compensating for the rotation from the motor speed differential, that strikes me as a problem.

When you're moving forward at a 30 degree angle and you yaw, you'll roll a little bit as a result of the motion of the quad, but if you're level and stationary you should be able to yaw spin without any other rotations.

Maybe you could record a short clip from your flight sim and show us?