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View Full Version : My first AeroQuad Octo



ziisco
05-20-2011, 05:48 PM
Hi,

Just came back from the first test flight with my octo:

1.6kg without lipo. 2.2kg with 2 lipos. about 65cm motor motor. flying in configured X mode. 8 x KDA20-22L, 20A ESCs, 8x4inch porps.


http://www.youtube.com/watch?v=LIN639JYa8k
http://gallery.uniq.li/albums/aeroquad/octo/normal_IMG_1298.JPG

OldGeek
05-21-2011, 04:32 AM
That's pretty darn cool. What kind of flight time / payload are you getting with this setup?

Honk
05-21-2011, 05:13 AM
Nice to see it fly! I wonder if I could actually getting my H8 to be able to fly and still yaw if I "Y'ed" together the ESC's and bundled it up as X config with CCW/CW props in groups of two and not mixed... Maybe I'll just do it the proper way with the timers, then we could even maybe start getting some timer channel "cherry pick" up and running in AQ!

ziisco
05-21-2011, 06:23 AM
That's pretty darn cool. What kind of flight time / payload are you getting with this setup?

Didn't test it yet. I'll do that today. Yesterday I was flying with 1 x 3300mAh 35-70C, the plan is to have 2 of them in parallel. With one lipo it hovered at about % throttle. I guess it will lift 1kg payload or so. But we'll know when I've tested it :)

Somehow it's no bad idea to just use Y-splitters. But it would be cooler to have 8 PWMs from arduino and play around with different motor setups. Maybe we should look how mikrokopter is turning the motors and doing Yaw.

Honk
05-21-2011, 12:18 PM
Well, the actual control algorithm isn't hard at all: for yaw, just assume you have mounted every other motor CCW and every other CW (so a CCW is always closest to a CW, zig zag), and speed up the CCW ones while speeding down all the CW ones just as much. That will get you to yaw in one direction, and vice versa. Only thing in my way right now is time and timers. :)