[pierpaolo9600]

Hi guys,
it's my first topic here and i'm asking you an help to fly my Y4 project 
I'm planning, and i have yet done a prototype, to build a "stylish" drone in y4 configuration. Unfortunately into librepilot gui there isn't a y4 configuration...it's possible to fly my y4 project? The distance from center of each motor is more or less of 18 cm and it will fly with 5-6" propeller (only for tests).

thanks to those who can help me out!

[Mateusz]

I haven't done that myself, but from what I understand you have different motor configuration and you want to use different motor mixing ?
Unless someone else answers more accurate/helpful answer, my best guess is that you might want to look at
https://forum.librepilot.org/index.php?topic=338.msg2397#msg2397
which in turn suggests this reading
http://wiki.paparazziuav.org/wiki/RotorcraftMixing
it also includes some python script for custom motor mixing.

[f5soh]

Hi Paolo,

Maybe start with a Y6 and only use 1 - 4 outputs for two front motors + 5/6 outputs for tail

[pierpaolo9600]

Should i disable something if i use Y6 configuration?

[f5soh]

No.

Affect Motor1 to output1, M2 > output2, etc...
And use only Motor1 / Motor4 for front, 5/6 for tail.

[pierpaolo9600]

First roll out has been done .
The configuration is like a quad X (suggested by alessio morale) with custom mix for 1-2 motor 0 into yaw choice and 3-4 0 into roll choice.
The y4 fly but really bad...how i can improve it? There are some tips for pid tuning?
I'm a newbie into librepilot world!
Maybe we can improve the situation using the active brake...