GGoodrum
Member
I got tired of not being able to deal with the low frequency vibrations on the VC-600-X8 setup, so yesterday I moved everything over to an XA hexa frame. This uses the very stiff ABS arms used on the X450, which is similar to DJI's F450 Flamewheel design, but in a hexa "X" orientation. Where I was able to grab the end of one of the X8's arm, and twist it about 15 degrees, these arms don't move at all. This is a very solid setup, so hopefully, this platform will not have an unmanageable vibe problem.
Eventually, the plan is to use a Naza on this setup, but since I can't seem to find anyone who has these yet, I decided to just go ahead and use the WK-M setup. This WK-M is still destined for my Cinestar 6, but it still needs quite a bit of work before it will be ready to fly. I have to sort out a power distribution solution, to the ESCs, and figure out how/where to install the WK-M bits. In any case, I need something to fly, and I spent literally weeks trying to get the X8 there, and I now know those efforts were futile. The design is just too prone to vibrations, and the coaxial configuration just makes it worse. I think I'm done with coaxials. :black_eyed:
The XA hexa frame looks like it was designed for a WK-M.
The extra electronics plate has a cutout in the middle that just fits around the WK-M IMU. Also, there is another small plate that snaps into the two tubes that are used to attach the landing gear and camera gimbal, that when turn around, makes a perfect platform to hold the WK-M's GPS mast. Until DJI fixes the gimbal drifting/wandering issue, I'm using a v1 XA FC/AHRS combo, just to drive the gimbal servos, so I have the FC mounted on the plate with the GPS mast, and I stuck the AHRS on top of the WK-M's IMU.
The gimbal is not shown, because I'm still assembling it. It is the MC6500PRO unit that CNCHelicopter sells. I've seen a few videos of a WK-M - equipped XA hexa, with this gimbal, and it seems to work. This uses a mechanical reduction in each axis, and they have supposedly "tailored" the servos to this application. I think the "secret sauce", however, is that they use rotary-type dampeners, in each axis, which will smooth out the small movements, and help take up any play in the linkages/servo gears. We'll see. :nevreness:
I still need to tidy up some of the wires, etc., and then I'll be ready to do a quick test flight. Then I'll finish up the gimbal, and get it installed. I'll post some more pics after I get the gimbal mounted.
My hope for this is that I will finally have a stable video platform for my GoPro 2. I can then get back to trying to finish up my CineStar 6 build, which I' need to do before Christmas, as I'm hopeful Santa is bringing me a new NEX-5N.
-- Gary
Eventually, the plan is to use a Naza on this setup, but since I can't seem to find anyone who has these yet, I decided to just go ahead and use the WK-M setup. This WK-M is still destined for my Cinestar 6, but it still needs quite a bit of work before it will be ready to fly. I have to sort out a power distribution solution, to the ESCs, and figure out how/where to install the WK-M bits. In any case, I need something to fly, and I spent literally weeks trying to get the X8 there, and I now know those efforts were futile. The design is just too prone to vibrations, and the coaxial configuration just makes it worse. I think I'm done with coaxials. :black_eyed:
The XA hexa frame looks like it was designed for a WK-M.
The extra electronics plate has a cutout in the middle that just fits around the WK-M IMU. Also, there is another small plate that snaps into the two tubes that are used to attach the landing gear and camera gimbal, that when turn around, makes a perfect platform to hold the WK-M's GPS mast. Until DJI fixes the gimbal drifting/wandering issue, I'm using a v1 XA FC/AHRS combo, just to drive the gimbal servos, so I have the FC mounted on the plate with the GPS mast, and I stuck the AHRS on top of the WK-M's IMU.The gimbal is not shown, because I'm still assembling it. It is the MC6500PRO unit that CNCHelicopter sells. I've seen a few videos of a WK-M - equipped XA hexa, with this gimbal, and it seems to work. This uses a mechanical reduction in each axis, and they have supposedly "tailored" the servos to this application. I think the "secret sauce", however, is that they use rotary-type dampeners, in each axis, which will smooth out the small movements, and help take up any play in the linkages/servo gears. We'll see. :nevreness:
I still need to tidy up some of the wires, etc., and then I'll be ready to do a quick test flight. Then I'll finish up the gimbal, and get it installed. I'll post some more pics after I get the gimbal mounted.
My hope for this is that I will finally have a stable video platform for my GoPro 2. I can then get back to trying to finish up my CineStar 6 build, which I' need to do before Christmas, as I'm hopeful Santa is bringing me a new NEX-5N.
-- Gary
