DJI F550 with RC Timer 800 Arms - now flies like a dog!

[jonnyrich]

Hi all,

I'm fairly new to the scene and got myself a F550, NAZA M Lite GPS and I'm flying a Sony NEX5n on a Grouse House Technologies gimbal underneath.

It's going well, but there is some downdraft issues with the small frame, so I decided to buy the RC Timer 800 arms for it - to get the downdraft away from the gimbal.

This mod seems fairly straight forward and I think I'll need new motors and props in time.

However, all the test flights since the mod have resulted in a crash. The Hex is almost uncontrollable. I checked time and time again the motor rotations, NAZA software settings and I was pulling what's left of my hair out.

But today, I spotted the problem. Couldn't believe it!

I'd put the GPS module on back to front!! Such a school boy error.

Now it flies like it should. Thank goodness.

Want to see the crashes? Course you do... https://vimeo.com/90426279

When it does work, I can make stuff like this https://vimeo.com/89356339

The moral of this story? Don't fly with your GPS module 180 degrees away from the correct orientation! Doh!

 

[STI-REX]

The Naza lite is locked to an early version of firmware and the early versions were not recommended for anything over 650mm according to the early manuals

Also see note 1 in the red ink on page 6 of the LITE manual

http://download.dji-innovations.com/downloads/naza-m lite/en/NAZA-M LITE_User_Manual_v1.00_en.pdf

 

[jonnyrich]

I'm curious about the frame size thing. They would recommended the expensive Wookong, though, wouldn't they? But how does M V2 work with larger frame sizes? I suspect they all have the same base algorithm with the V2 having tweaks and enhancements.