Tarot FY 680 and a bit Hexacopter

[Coyote]

Yup I`m nearly happy with it, it was better than I thought it was going to be. The first flight was major boring so I didnt use that footage, but it wasnt twitchy like the second one because I ha the gains lower. To my eyes it looked fine, but the GoPro showed different.

Yes love a good pinch G :)

Cheers Jim for the tip to find out my GPS boo boo :)

I do like the tilt option too Paul :)

Yup pretty happy now the GPS doesnt drift Steve, didnt have much confidence until that was fixed tbh

[bignose13]

Very good Ian, makes me wanna buy one, multiwii of course for me
BTW Was the man at the back of the car park playing with himself  :yikes:

[Coyote]

Lol it was a woman walking her dog, but I think at that point she was putting squirrel food out while throwing us dirty looks :)

[Coyote]

I put a Multiiwii Crius Lite on the Hex to see if it would perform better on the gimbal that the Naza`s own gimbal control. To be honest at first I thought it was better, but then I did this ( all be it naff ) comparison and now unsure.

Mutiwii vs Naza on the gimbal

Windy again which really doesnt help the testing, but what do you think ?

Any one better than the other ?

Enough to hard wire the wii in or just stick with the Naza ?

[FPVSteve]

Top Left seems better for me, Bottom Right is jittery in comparison. Top Left is nicely dampened.

[Coyote]

I don`t know, to me the top left wii seems to react to slow when you counteract a movement where the Naza doesnt seem to be doing that. But the wii does seem smoother

[pk-surfing]

Stick with the Naza and keep it simple at the same time.

I can't tell any difference, plus too much variable involved for the parameter (twitchiness) you are trying to compare/test  i.e gustiness and pilot input variations in the 4 or 5 minutes between the tests.

OR/ re-do the comparison test when it gets a lot windier (hehehe)

PK

[g.collins]

I get jitters with the wii gimbal, your one looked pretty good, to hard to tell which is beter.
:) G

[Coyote]

Right well a week or so has past, really happy with the way the Tarot flies :)

The gimbal though is just not cutting it with the servos, the steps that the servos have is killing any chance of good solid footage.

So after all the buzz about brushless gimbals and Hase getting two controllers to try and sending one up to me this seems like the answer :)

The footage from the brushless gimbals is great. I love the way the IMU is on the camera tray so instead of it knowing the platforms orientation and trying to adjust to suit, the sensor knows exactly the cameras position and works much more effectively.

I tried the same principle with the servo gimbal, but no matter what filters I used on the sensors, because the servos stepped on a movement, the gimbal went crazy with the feedback so it was not going to work.

So begins my brushless gimbal for the Hex, the prices for the pre order ones are very steep, way out of my budget so I`m going to have a crack at making my own :

I started off by going through my spare motors and came across these RCTimer 2030/14 750kv.



A quick check showed these have been used and performed well, get in :)

Next was to strip the motors and remove all the windings for me to rewind them. I`m winding them in Wye with 0.18mm wire, 60 turns per pole.



I bought one length of 10mm square alloy and started marking up where I wanted everything positioned :



Then cut the bar to make the lower frame :



Repeated with the upper bar to bring the Gopro further forward than the previous gimbal in a vain attempt to get the props more out of shot in 720p



I used two other spare RCTimer motors to show the mock up above.

Waiting on 3mm carbon turning up to brace each corner and bend, this should keep it ultra light but very strong. The carbon will also be used for the camera tray and mounting base.

[marcin]

Nice Ian ,looking good job done.

[Dizzy]

nice idea coyote the simplest is usually the best too :D

dizzy :)

[marcin]

Now you need to get through this s...t   :P

[bignose13]

You dont do anything by half mate, fair play to you, respect

[wgt40w]

Don't let this project get you 'wound up' - will you??

[Coyote]

Cheers lads, yeah looking forward to rewinding Marcin :)

It wont be any time soon, due to the Chinese new year we don`t expect the controllers turning up til the end of the month.

The instructions are scattered through various threads Aitch, helps if you can speak German and Russian lol :)

Gimbal controller I`m going to be using thread : http://fpv-community.de/showthread.php?20815-Sammelbestellung-Gimbal-Brushless-Controller-50x50mm/page20

Main brushless gimbal thread : http://www.rcgroups.com/forums/showthread.php?t=1815204

Brushless gimbal website ( German ) : http://brushlessgimbal.de/

Brushless gimbal site : http://www.simplebgc.com/eng/