F550 with NAZA lifts off doesn't stop rising... Don't know what to do..

A

analographi

Member
Hi,

I built a F550 with the NAZA controller, everything as its in the manual.
I have a Futaba 10CHG in airplane mode and a 8 Channel Futaba Sbus receiver.

I use Sbus for connection to the naza.

I started the DJ naza config and proceeded exactly like requested in the manual. I calibrated the transmitter input, reversed two channels to make it right, setup the switch for manual and attitude mode, use intelligent mode etc.

Then I started the copter with the knob combination, works fine.

I push throttle a bit, so that the copter doesn't shut off the motors but doesn't lift off.
Then I test pitch and roll, the copter still sitting in the grass. It moves as it should.

Then I push throttle until lift off (manual mode) the copter lifts off motors start pushing it and off it goes!! I take the throttle back to minimum, but it doesn't change.
From the moment its in the air the motors speed up on their own and the copter rises rotates (yaw) with about 1Hz or less. The copter is pretty much level though. just that it rises and rotates.

Then I tried Ajusting the autopilot. I put YAW adjust on a knob of my transmitter. Lowered it, but it still rotated. I put the vertical gain on another knob, it has no influence at all. Because I'm in manual mode.

I test attitude mode. Led starts blinking, so I know I'm there. Same behaviour. As soon as the copter lifts off motors spin up and the copter rises. Pulling the throttle down doesn't help. I have to kill the motors to get it back and alread broke an arm... glued it.

I lowered the two attitude gains by 10%, but it still did the same. arm broke again. glued it again. better glue

I did not do any further testing, because I thought its smarter to ask someone first.

I highly appreciate your help and I'm sorry I didn't contribute to the forum in any way before asking for help. I'm new to all this.

Best wishes
Raphael
 



Blacksails

Blacksails

Member
I had this on my AD8 with wkm. Everything would respond as expected in the firmware and on the copter before it left the ground, but as soon as it left the ground it would keep on rising and not respond to any roll, elevator or yaw. Only way I could get it back was to cut the engines.

Turned out that I had connected 2 of the ESC's to the wrong ports on the WKM. I had mixed up port 7 and 8 even after double and triple checking.
 

A

analographi

Member
I checked now again, but it's correct. also, it does react to pitch and roll correctly when sitting on the ground! I just rises quickly and I cant test yaw because it all happens to fast. i have to kill it before it is too high.
 


A

analographi

Member
The setup really is very simple because I use the S-Bus. There is just one wire going from the receiver to the nasa, the nasa is connected to the escs, correctly for sure, checked like 7 times.


I just checked the props rotation and found a little mistake. The do all rotate in the wrong direction. All of them, what should be counterclockwise rotates clockwise and the other way round. I think I put the props on correctly, otherwise I wouldn't have lift I guess. I don't know if the controller cares what way the props rotates as long as they rotate alternating into the opposite direction.. or does it?

Anyways. I changed the roatation now. but I can't do a test flight. its dark.. and it rains..
 

kloner

kloner

Aerial DP
assuming you have the basic modeling skills it could or could not be put together right, but lets pretend it is.

have you ever considered holding it to feel what it does in hand? kinda dangerous, but keep the blades away from your self and see if it pulls then doesn't pull with throttle. it it just goes wide open like your saying it just goes up, what do the lights do? does a single spark goto a double spark? does it flash different sequences? like in and out of fail safe? is manual and atti dead nuts in the middle when you programmed them in so it can't go in and out from being to close to the line into failsafe?

pics i was curious to see would be how the stuff is mounted, what direction it's in, if the props were right, etc.
 

A

analographi

Member
Soooo, that was really the problem. I changed roation of all motors and switched all propellers and now it works. So the DJI Naza DOES care which way the motors turn. I dont see why that is a difference since the props were mounted to create lift and the motors were alterntig turning clockwise anticlockwise, but hey. at least the thing flies now. :)

Thank you for the support! Actually when I was asked to send pictures I was forced to double check everything again and since I was 100% sure that connections were correct the only thing that was left were the props and directions. And since I was also sure that roatation direction was alternating, there was just one thing left...

Best wishes
Raphael
 


S

sotomatic

Mad Scientist
Hey little things like that are easy to miss sometimes. I went nuts trying to figure out why my F450 kept flipping over after I took it apart for cleaning. Turns out I had switched two of the ESC wires even though I had checked like 10 times. It's the little things man. Glad you got it back up in the air. That would freak me out to just watch the whole thing fly off to space.
 

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