Which one? I calibrated 2 IMU each in 6 positions.

You need to do the complete setup, balancing first, basic setup etc. see the users manual. Do not perform IMU calibration at startup and the gimbal will start faster. The GUI will take some seconds to connect, so what?

Not likely broken, just basic setup missing.

I tried to configure, but too many errors and too long delay info from sensors.
It's simply defective.
For Example: errors in recording sensor configuration, my last video:

The video is just too difficult to follow. What are you trying to do, what is wrong?

Of course the gimbal will not work, no camera installed, it is not balanced.

The frame sensor needs to be activated first, but better make the gimbal work firs just with the camera IMU.

Is your GUI and FW version the same?

Are those motors by specification 22 poles. Did you perform motor auto to get the inverted status correct first.

30 feels like low power, what is the voltage?

Your PID is all to low, but at this point it is not important. after you have everything else working perform auto tuning.

You have I2C errors and serial connection problems you need to fix that first.

You must perform the tuning on correct order. see the users manual.

Make sure you are using a good quality USB cable. If problems persist save your settings and reset EEPROM.

Well, have you performed the complete basic setup carefully and as per the instructions? that is the number one problem people have, makin some shortcuts performing it. It will not work. especially when you are doing it at the first time, it is really necessary to perform the complete setup details as instructed and not to expect the gimbal to work until it is fully performed.

Have you set the motor power as instructed? your power looks very low and totally wrong number of poles also suggest it is too low. When raising it just make sure the motors will not get hot.

Have you ensured the gimbal is mechanically ok? everything moving freely and correctly balanced. There is no reason to try to do anything with unbalanced gimbal, it will not work.

If you press the motors off on GUI and move the camera by hand, do the indicators on right side of the GUI move logically? They should.

Are you sure your motors are correctly connected and assigned, if not that would cause problems.

It is possible that something is broken, but based what I have seen so far, I suspect it is just the basic setup and tuning.

I read the official instruction.
More power to motor do not solve the problem.
Everything moving freely and correctly balanced, yes.

>"If you press the motors off on GUI and move the camera by hand, do the indicators on right side of the GUI move logically? They should."
They move, but with delay about 5-10 seconds

>"Are you sure your motors are correctly connected and assigned."
As far as I know it does not matter how to solder these 3 wires from the motor to the controller.
In the GUI i tried all combination inverted/not inverted

I tried separately to lay cables to the motor and IMU. It did not help.

With motor connections I meant Pitch is connected to pitch and assigned correctly on GUI. Some boards had labelling problems on this so see carefully the wiring diagrams.

There must be no delay on the indicators and it is very strange is you have. Reinstall the drivers and ensure good USB cable. The board does not store the information for 5- to 10 seconds, so the delay is on the computer. Try different computer if the problem remains.

I seriously doubt though that the computer can cause that long delay either, so it is very strange.

I2C indicator on the IMU or on the alexmos controller?
I see on IMU only 1 led.
And alexmos controller has 1 green and 1 red

The wire is ok. I test it.

If there is two IMUs on the system they need to have a different address, see the ADDR jumper on the picture. Is it closed on the other IMU. It should be.

At some point we where all new to the gimbals. How I started was reading the users manual, it was not very great at that time, but now it is pretty good.