70 replies to this topic

[dacat]

double Roll-Flip on my bed

have i missed something in the setting??? will post soon the video and settings

edit:



settings:  Vbar-test.uav   10.16K   4 downloads

[peabody124]

Awesome work Bani!  Be aware that if you use gyro suppress that also works a bit like expo.

[Bani Greyling]

peabody124, on 26 February 2012 - 05:03 PM, said:

Awesome work Bani!  Be aware that if you use gyro suppress that also works a bit like expo.

Thanks.

On VBarSensitivity=1 it is difficult to do a hover (for me anyway) because it is very nervous. So for me to still have control I used expo to calm it down around mid stick. For non Expo Tx one could make VBarSensitivity=f(Stick input), like 0.5 at mid stick, but 1 at full stick. Just a thought. (for someone to need that kind of agility, he would probably have an expo enabled radio.)

I am already on 12 deg pitch with swash almost binding, so only way to get a even faster roll is to increase head speed or move the ball link on the blade holder inwards for few extra degrees pitch. But either way I think increased agility lies with the bird and not the control algorithm. It is already too hot to handle for my skill level, so I doubt I will go down that path.

Edited by Bani Greyling, 26 February 2012 - 07:12 PM.

[scphoto]

anywhere to get the OSX version? I see that it had been taken down for bugs. Cant seem to find a mac version now....

[peabody124]

http://dl.dropbox.co...22-ee10c1ee.dmg -- remember this is a testing release only so you may sacrifice your quad

[ddavus]

I have installed the new firmware. The quad is stable, but exhibits tbs (toilet bowl syndrome). It circulates ccw. I guess if I were below the equator it would circulate cw. I had this same phenomena with my first coaxial copter. This occurred when the flybar was not properly adjusted. I must assume that this is some form of oscillation. With my llama I would adjust the link of the flybar to the propeller. What is the analogous adjustment with vbar? gyro tau? Kp?

[peabody124]

Can you try just increasing the yaw tuning first to see if that will go away.  Also verify you don't have the piro comp mode enabled.

[ddavus]

Piroette comp is false. When you mention increase yaw turning, I am confused. Do you mean vbaryawPI?

[peabody124]

Wait are you using vbar for yaw?  I haven't tried that but wouldn't recommend it.  I mean the normal RateKp and RateKi

[ddavus]

I am not using vbar for yaw. I am using rate. I will increase rate KPI for yaw and reply with results.

[Enthlapy]

NVM, found it.............