Q500 4k Stuck in emergency mode after crash, no obstructions

kyray25404 · Jul 15, 2018

Hi! I crashed my Q500 and ever since it has been stuck in emergency mode. I have made sure there were no obstructions, but I can't get it out. It has one beep/second and flashes white repeatedly and then red, green, blue. I've updated firmware.

I also plugged it into the GUI, did the ESC assignment, only thing weird is that the voltage there is showing 0.1V and that the battery is low. The batteries are fully charged and testing at full voltage, I've also used a voltage tester to make sure the boards are getting their voltage. Controller doesn't see the drone at all, and the drone won't enter bind mode from this state.

Any suggestions? Anyone have something similar happen?

kyray25404 · Jul 15, 2018

Oh, it does still see the camera, that has no problems binding or working

Steve Carr · Jul 15, 2018

Did you tip the Q forward a few times to see if it will enter bind mode. The status light will change to orange flashing in bind mode.

kyray25404 · Jul 15, 2018

Steve Carr said:
Did you tip the Q forward a few times to see if it will enter bind mode. The status light will change to orange flashing in bind mode.

Yes, I've tried this... won't enter bind mode.

kyray25404 · Jul 15, 2018

Here's a video of what's happening

Steve Carr · Jul 15, 2018

When you connect the USB cable to the Q500 for the GUI, is there a connection in the battery compartment that you unplug or is it a single cable?

kyray25404 · Jul 15, 2018

Steve Carr said:
When you connect the USB cable to the Q500 for the GUI, is there a connection in the battery compartment that you unplug or is it a single cable?

It's just a single cable

Steve Carr · Jul 15, 2018

Okay. I'm wondering if some of those wires were ripped during the crash. Have you gently tugged on those wires? Look inside the batt compartment and see if anything looks loose.

kyray25404 · Jul 15, 2018

Steve Carr said:
Okay. I'm wondering if some of those wires were ripped during the crash. Have you gently tugged on those wires? Look inside the batt compartment and see if anything looks loose.

It's driving me crazy, I took the entire thing apart, checked all the wires, everything seems to be there... in theory it should work, if the ESC's were bad, they'd fail on the GUI, correct?

Steve Carr · Jul 15, 2018

That's correct.

Steve Carr · Jul 15, 2018

There were no red x's on the GUI? Everything was green?
Did you run each motor individually and check for the proper rotation?

kyray25404 · Jul 15, 2018

Steve Carr said:
There were no red x's on the GUI? Everything was green?
Did you run each motor individually and check for the proper rotation?

Everything was green, I ran each motor multiple times, assigned them all... assigned them again for fun. It won't let me calibrate the accelerometer, it times out each time... could that be the problem?

Steve Carr · Jul 15, 2018

kyray25404 said:
Everything was green, I ran each motor multiple times, assigned them all... assigned them again for fun. It won't let me calibrate the accelerometer, it times out each time... could that be the problem?

Yes. That is a problem. Was there any damage to the aircraft?

Steve Carr · Jul 15, 2018

Also, in the GUI, did you see numbers in the X, Y, Z axis and did they change when you tipped the Q?

kyray25404 · Jul 15, 2018

Steve Carr said:
Yes. That is a problem. Was there any damage to the aircraft?

A portion of it did submerge in water temporarily... is there any fix or part I can order? I'm honestly not sure what piece is the accelerometer

kyray25404 · Jul 15, 2018

Steve Carr said:
Also, in the GUI, did you see numbers in the X, Y, Z axis and did they change when you tipped the Q?

Yes, they did change when I tipped it

Steve Carr · Jul 15, 2018

I've never tried to find the components on the Q so I can't say for sure. I have one with the shell open so I'll take a look later. However, it might be worth using a hair dryer on it for about 15 min on low heat.

kyray25404 · Jul 15, 2018

Steve Carr said:
I've never tried to find the components on the Q so I can't say for sure. I have one with the shell open so I'll take a look later. However, it might be worth using a hair dryer on it for about 15 min on low heat.

Okay... so It's not beeping any more, but tilting it isn't putting it into bind mode... at least one piece of the puzzle is working