Cable cam altitude accuracy?

[Pedals2Paddles]

I tried out cable cam for the first time today. One of the points was aset about 4ft above the ground. Each time it flew the cable, it was way below that point. You can see about 1:15 in the his video, it was so low, it was skimming the grass.

Is cable cam using barometric altitude or GPS altitude? Usually the barometric altitude is more accurate than that, but certainly not fool proof.

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[Ian [P13]]

It'll use the baro, if you're doing a cablecam at full speed that will reduce the accuracy.

 

[RichWest]

Others were discussing MPCC and how to adjust the spline curves both for the 2D and 3D aspect. Great tips offered to reduce the overshoot that you experienced.

Sharper corners in MPCC

 

[Pedals2Paddles]

Awesome, thanks. It had never occured to me that altitude was being rounded out just like the lateral direction changes. So it isn't that it got the altitude wrong, It's because it curving around it to make a nice smooth transition. I think I'm also going to make sure no point is ever less than 5 feet above ground so I have a better margin of error. I was woefully unprepared to hit the pause button when it came down, so I also need to be more attentive.

 

[RichWest]

fwiw, I'm sure there is a speed factor at play as well. So if you were making a rapid descent, your curves would be more exaggerated on the exit side of a WP. Call it a "drift" factor, more speed more drift.

 

[EyeWingsuit]

Awesome, thanks. It had never occured to me that altitude was being rounded out just like the lateral direction changes. So it isn't that it got the altitude wrong, It's because it curving around it to make a nice smooth transition. I think I'm also going to make sure no point is ever less than 5 feet above ground so I have a better margin of error. I was woefully unprepared to hit the pause button when it came down, so I also need to be more attentive.

Bear in mind that without wings, speed doesn't generate lift. If the speed is high enough, then the attitude is forward-angle low, and the Solo is trying to maintain altitude while maintaining speed. Speed usually wins. This morning I watched a guy trying to fly automated flight at high speed (he's a very famous celebrity who occasionally flies drones on his television show, and he's pretty good) while at very low altitudes. His Inspire 2.0 is a mess of carbon fiber, as the Inspire couldn't hold altitude with the speed/nose low. It's a shame to see so many Inspires burn in because owners try to be camera operators and pilots at the same time. With cable came and other tools, it's wonderful for 3DR people to be able to operate the cam while flying a programmed line. So many Solo buyers truly have no clue what they can do with it. If the interface would clean up a bit, we'd practically have nirvana. Ask me why in two weeks.

 

[Pedals2Paddles]

Yep. It's very difficult to be precision pilot and a precision camera operator at the same time. Cable Cam lets Solo do the piloting so you can just focus on the camera work.

 

[Jubalr]

If the interface would clean up a bit, we'd practically have nirvana. Ask me why in two weeks.

Oh, you are such a tease!. Can't wait to see what they come up with. Almost made flight arrangements for Vegas yesterday. But existing schedule won out. Would have enjoyed saying hello and meeting you in person. But I did register for Drone World Expo in November.