I got the following message: [error] RGB camera calibration missing, aligning to RGB won't work So i tried to calibrate.py my Oak-D device (from Kickstarter) Calibration of Oak-D failed now i get the following error: ./depthai_demo.py Using depthai module from: /home/tstone/.local/lib/python3.10/site-packages/depthai.cpython-310-x86_64-linux-gnu.so Depthai version installed: 2.17.3.0 Setting up demo... Available devices: [0] 14442C10216CBFD200 [X_LINK_UNBOOTED] USB Connection speed: UsbSpeed.SUPER [14442C10216CBFD200] [1.2] [6.279] [system] [critical] Fatal error. Please report to developers. Log: 'Fatal error on MSS CPU: trap: 09, address: 8028F158' '0' [CRITICAL] [0:00:06.279291] Fatal error. Please report to developers. Log: 'Fatal error on MSS CPU: trap: 09, address: 8028F158' '0' This is an error which occurred after calibration. If i restart the calibration with: ./calibrate.py -brd OAK-D-CM4.json -s 2.81 -db -m process -drgb it works until it tries to write the calibration data: Displaying Stereo Pair for visual inspection. Press the [ESC] key to exit. Traceback (most recent call last): File "/bulk/baustelle/depthai/depthai/./calibrate.py", line 672, in <module> Main().run() File "/bulk/baustelle/depthai/depthai/./calibrate.py", line 667, in run self.calibrate() File "/bulk/baustelle/depthai/depthai/./calibrate.py", line 564, in calibrate if self.empty_calibration(calibration_handler): File "/bulk/baustelle/depthai/depthai/./calibrate.py", line 320, in empty_calibration if getattr(data, attr): return False UnicodeDecodeError: 'utf-8' codec can't decode byte 0xdd in position 0: invalid continuation byte This is with e377e9bcf7caa87f421fd95e53d8263d23bec764 from the repo. Is there a way to reset the eeprom or how do i get out of this mess? Thanks

I just tried the rpi image it has the same error on calibration run: UnicodeDecodeError: 'utf-8' codec can't decode byte 0xdd in position 0: invalid continuation byte I have another Oak-D without calibration data but which is still working as before. So i am very sure this is a problem of the calibration.py run.

Oak-D failed after calibration.py run

DanielCalaver

can you run this script and share the content of the EEPROM displayed here?

https://github.com/luxonis/depthai-python/blob/main/examples/calibration/calibration_dump.py

tstone

I already tried to run a similar script. The output is the following:
python3 calibration_dump.py
File "/tmp/calibration_dump.py", line 70
<title>depthai-python/calibration_dump.py at main · luxonis/depthai-python · GitHub</title>
^
SyntaxError: invalid character '·' (U+00B7)

The thing is that I am 100%sure that before the calibration.py run the eeprom content was correct.

tstone

btw: calibration_factory_reset.py
fails with
Factory reset calibration FAIL: Missing or corrupted factory default calibration

tstone

I also tried to modify calibration_flash_v5.py so that it is not creating a backup file which fails with my corrupted eeprom. But it seems i don't have any binary calibration file to feed to the camera. Is there such a file available somewhere?

DanielCalaver

@tstone can you try to run the calibration factory reset script then? https://github.com/luxonis/depthai-python/blob/main/examples/calibration/calibration_factory_reset.py

tstone

./calibration_factory_reset.py
Factory reset calibration FAIL: Missing or corrupted factory default calibration
:-(
It seems to me that with a binary factory default calibration file (which i can't find anywhere) i might be able to flash it with the calibration_flash_V5.py (after commenting out the backup stuff which fails)

tstone

I would like to bump this. I was trying to get my OakD running again and unfortunatly plugged in the other device i have due beeing confused. Now i can at least confirm that the call:
./calibrate.py -brd BW1098OBC.json -s 2.81 -db -m process -drgb
git e377e9bcf7caa87f421fd95e53d8263d23bec764 corrupts the EEPROM on the device.
The downside is that i don't have any working OakD anymore :-(.
So please help me get my devices out of their soft bricked state.

DanielCalaver

Hi @tstone sorry for late response, thanks for finding that out, will try to brick one of my oak cameras and see how I can fix it, will get back with the results tomorrow. It's weird because calibrate script shouldn't be able to corrupt factory data.

DanielCalaver

@tstone can you share the images used for calibration? I did some calibrations after capturing 13 images and I didn't encounter the issue, the images are saved in depthai/dataset

tstone

Here is an image of the calibration panel:

Nevertheless i think the problem stems from the missing EEPROM calibration data in the cams in the first place. So i think if i manage to write some matching eeprom content a new calibration run might probably work out?

tstone

Bump? Any input on this?

DanielCalaver

tstone

I couldn't replicate the error, now that I'm looking trough errors again, I see you used oak-d-cm4 calibration, is this your board? Thought it was oak-d.

tstone

If you have an EEPROM why don't you check for the type yourself and pull the right config file to not let the users run in this problem at the first place?

Yes you are right, i have two of these semi bricked Oak-D over here. But what is the correct board file to calibrate these cameras?
ACME01.json BW1098OBC.json OAK-D-CM4.json OAK-D-IoT-40.json OAK-D-PRO.json OAK-D-W.json
BW1097.json DM2097.json OAK-D-CM4-POE.json OAK-D-LITE.json OAK-D-PRO-W.json

None of the above seem to be the right one?

DanielCalaver

tstone

Sorry for the inconvenience, we are working on a better GUI for calibration, until it's finished, for OAK-D cameras, please use BW1098OBC, more information about the current calibration process here.

So, calibrating with the wrong json should not over-write any sensitive fields that would make your board soft-bricked, it'll only give bad depth performance. Can you try to see if the mono-preview example and rgb-preview example works?

tstone

Mh, so i used the right board file for the calibration run. I think the boards had a "different" calibration data. I am pretty sure that this worked when the cameras where new. But with later versions i got calibration data missing, that's why i started the failed calibration run.

The mono-preview example works. The rgb_preview.py fails with
Usb speed: SUPER
Traceback (most recent call last):
File "/bulk/baustelle/depthai/depthai-python/examples/ColorCamera/./rgb_preview.py", line 30, in <module>
if device.getBootloaderVersion() is not None:
AttributeError: 'depthai.Device' object has no attribute 'getBootloaderVersion'

I am pretty sure that its not a hw failure as both cameras failed (one by accident) after the calibration process.

DanielCalaver

tstone

Sorry I missed your reply, please try to pull the latest for depthai-python and install depthai 2.19.1 (with python3 -m pip install depthai==2.19.1) this should solve the AttributeError: 'depthai.Device' object has no attribute 'getBootloaderVersion'.

For calibration data missing, do you have any back-up file? These should be generated with the current EEPROM content before writing new calibration data.