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[Traam]

Here is another video of what is happening when I have my smoke stopper on. Looks like there may be a short when I give any inputs. https://www.youtube.com/shorts/3fMlOpSgZX8

I can't seem to figure out how to drop the blackbox log in here though. I can try and send a screenshot of one of the drops though.

[Traam]

[sevro]

Here is another video of what is happening when I have my smoke stopper on. Looks like there may be a short when I give any inputs. https://www.youtube.com/shorts/3fMlOpSgZX8

I can't seem to figure out how to drop the blackbox log in here though. I can try and send a screenshot of one of the drops though.

That behavior is normal for the smoke stopper, they only run up to 1 or 2 amps. Like if you had a major short at the battery input it would pull the plug.

[Rob3ddd]

Just to understand completely what has changed since it was working on the other frame what exactly did you change?
Did you remove motors and move to other pads on ESC ?
Did you unplug stack harness and plug it back in?
I understand you rotated FC but did you unsolder and resolder any motors or battery leads?
It’s a bit hard to see your electronics but are you using single ESC or 4n1 ?
It looks like singles but they could be race wires.

I have seen cold solder joints create similar problems.
It feels like battery is dumping but quad just shuts down or falls.

[SnowLeopardFPV]

To upload a blackbox log, ZIP it up and then add the ZIP file as an attachment. Or host it on an external file hosting website such as Goggle Drive, Microsoft OneDrive, or Dropbox then post the link back here.

[Traam]

Just to understand completely what has changed since it was working on the other frame what exactly did you change?
Did you remove motors and move to other pads on ESC ?
Did you unplug stack harness and plug it back in?
I understand you rotated FC but did you unsolder and resolder any motors or battery leads?
 It’s a bit hard to see your electronics but are you using single ESC or 4n1 ?
 It looks like singles but they could be race wires.

 I have seen cold solder joints create similar problems.
It feels like battery is dumping but quad just shuts down or falls.

When I moved frames I:
- Didn't swap any motor placement just resoldered the back two so I had more wire length (corrected this, thought I swapped placed but I did not)
- I did unplug the stack harness and plugged it back in
- I added a new receiver (TBS Crossfire Nano)
- I added a GPS (RDQ Micro M8N GLONASS GPS Module)
- I also put a new capacitor on but I have since switched that back to the old capacitor
- It is a 4n1

*I am also getting no warning is my goggles

[Traam]

To upload a blackbox log, ZIP it up and then add the ZIP file as an attachment. Or host it on an external file hosting website such as Goggle Drive, Microsoft OneDrive, or Dropbox then post the link back here.

https://drive.google.com/file/d/1rSHhuEw...sp=sharing

[SnowLeopardFPV]

Wow. I've never seen blackbox log like that before. You have some serious issues going on with gyro and motor oscillations. Those sinusoidal looking lines for the motors, and the yaw axis on the gyro should be smooth.

Check that all the bolts of the frame are properly tightened and that none of the arms are loose (as in they can't be moved at all). Also check that all the motors screws are fully tightened, that the stack is properly bolted down and isn't flapping around, and that there are soft mounts under the flight controller board.

Finally make sure that nothing is touching the gyro chip on the FC, and check that none of the motor screws are too long that they are touching the stator windings in the motors.

[Traam]

Wow. I've never seen blackbox log like that before. You have some serious issues going on with gyro and motor oscillations. Those sinusoidal looking lines for the motors, and the yaw axis on the gyro should be smooth.

Check that all the bolts of the frame are properly tightened and that none of the arms are loose (as in they can't be moved at all). Also check that all the motors screws are fully tightened, that the stack is properly bolted down and isn't flapping around, and that there are soft mounts under the flight controller board.

Finally make sure that nothing is touching the gyro chip on the FC, and check that none of the motor screws are too long that they are touching the stator windings in the motors.

Just checked all of that and all looks good, went out to test it again and same issue happened. Nothing appears to be touching the gyro either. I was also able to hover it while taking the weight of the battery off of it and it seems to wobble quick a bit in the hover. Seems that is what the wild blackbox lines are. May be out of luck on this one. Seems like it may have been user error in the transfer of frames and maybe I hit something with the soldering iron and messed the fc up.

[SnowLeopardFPV]

If everything looks to be correct then I can't think what else it could be other than a hardware issue with the FC. So all I have left to suggest it to replace the FC.

[Rob3ddd]

I looked at your back two motor solder joints to ESC pads and the one on the left side in the middle has a concrete appearance.
Anyway if you can reflow the joints and rule out a cold solder joint.A cold solder joint isn’t a short but will have a loss of power effect.
A bit of flux and a hot iron will reflow joints in just a few seconds.
Also check your motor screws and make sure no screws touch windings.
I have had the same loss of power effect from cold solder joints.
They can be impossible to see and sometimes the wire is in an air bubble inside solder pool.
A quick reflow of the two motors you extended would rule out cold solder joint.

[Traam]

I was thinking the same about replacing the flight controller. I will resolder the joints to see if it is a cold joint issue and report back. Hopefully that is the issue but if not it may just be the case that I need a new FC.

[Rob3ddd]

It’s worth a try.I’ve had solder joints strong enough to pull on but for some reason it needed reflowing.

It’s just unusual that your quad isn’t working after a frame change.

[Traam]

Still no luck with resoldering. I turned airmode off and the quad seems to be flying a bit better but I am still having the same issue of the throttle falling off and having very little power. I'll send a video for reference. May be getting to the point of just needing to buy a new stack. Wondering if I should just buy an ESC's or a FC? I'm thinking it me be the ESC's.

Had a hard time propping my phone up but the last half of the video you can get a pretty good idea of what the quad is doing.

[Rob3ddd]

A few brain storming questions.
Can you use OSD settings and watch voltage and current to see if it drops suddenly?
If its power related the OSD may show it in goggles.
Are you trying more than one lipo?A bad cell could cause sudden power loss.
How does your battery to ESC + and - solder joints look?Especially the ground.A reflow using flux may be worth a try.
Watching the OSD voltage and current may show if its a power issue???