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[Solved] Calibration fails with Fabscan 2020-06-29

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mario
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Posted by: @leonnoel

I have not been able to complete the meshing sequence. 

Thanks for reporting. Meshing should be deactivated in 0.9.0 by default, cause the meshlab integration made a lot of trouble since they updated meshlab on the pi. I am working on a better solution for meshing, but i need to get the scanner itself stable before i think about a better meshing solution. You should use MeshLab or Cloudcompare instead for meshing. I am already working on a bugfix release 0.9.1 were i will prove that meshing is removed. I will also try to fix those calibration errors. But i need to be able to reproduce this behaviour on one of my scanners. I think i need to do more testing on the machine with only one laser. My mostly used scanner has two lasers. 

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Veneficus
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I solved the issue with the calibration for me by the folowing steps (I dont know which one helped):

1. edit the config.json again. The Square size etc. was resetted.

2. adjusting the position of the Calibration Stand (reprinted it because my first was without adjusting holes)

3. Glued the Pattern again, that the Pattern is nearly 100% flat.

4. turned on the Second Laser (which I have some Problems at the end result but this I will first investigate a bit more first, maybe that can be solved by settings)

 

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mario
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@veneficus thank you for the investigations. I will try some of your suggestions.

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leonnoel
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@mario To continue- I have edited the point cloud file in Notepad++  by changing the 6th line in the header files from "element vertex (0)' to "element vertex xxxxx".  xxxx is the total lines in the file -15 (the header line) which gives the total number of points in the point cloud.  The point  cloud will load in both CloudCompare and the present Meshcloud.  This is consisten with the point cloud files of version 0.8.2. If I were only an expert in the usage of the two programs I think that I could have a decent mesh file.

The scan at full definition - 64399 vertical scans for two lasers and a 200 step stepper motor take about 40 minutes with version 0.9.0 which is about 4.5 time faster than version 0.8.2. I like this version.

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Adam
 Adam
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Posted by: @leonnoel

@mario To continue- I have edited the point cloud file in Notepad++  by changing the 6th line in the header files from "element vertex (0)' to "element vertex xxxxx".  xxxx is the total lines in the file -15 (the header line) which gives the total number of points in the point cloud.

I could have tried this too if only I knew where the file to be edited was...

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Micha_AC
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Same here. Got 2020-06-29 installed. Looks like calibration works fine. But when I would like to start a test-scan I get the message calibration failed.
Have had the same issue with the resettet config-file. Had to change it to 3200 steps several times!

The wifi-config-file even disappears completly after reboot.

 

//edit:  Additionally I'd like to say it's annoying the messages disappear so fast. On the main screen I wouldn't care if they keep in a message box permanently...

When will the platform rotary-steps, and the wifi settings be added to the frontend? Shouldn't bee too much work... But entering ti using ssh always requires to google where to edit which file when I re-try the fabscan once a year...

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mario
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Posted by: @micha_ac

//edit:  Additionally I'd like to say it's annoying the messages disappear so fast. On the main screen I wouldn't care if they keep in a message box permanently...

Thank you for the suggestion. I will see what i can do about that.

Posted by: @micha_ac

Same here. Got 2020-06-29 installed. Looks like calibration works fine. But when I would like to start a test-scan I get the message calibration failed.
Have had the same issue with the resettet config-file. Had to change it to 3200 steps several times!

Does scanning work after you changed the config values or not?

Posted by: @micha_ac

The wifi-config-file even disappears completly after reboot.

Please avoid double postings. You already asked that in 

https://fabscan.org/community/latest-release/how-to-setup-wifi/paged/2/#post-1529

and i just answered to it.

Posted by: @micha_ac

When will the platform rotary-steps, and the wifi settings be added to the frontend? Shouldn't bee too much work... But entering ti using ssh always requires to google where to edit which file when I re-try the fabscan once a year...

Yes of course it should't be too much work.  But i don't want to invest more effort in an old user interface with bad code and old libraries. We are already rewriting the whole thing. Editing the config via the user interface is already on the todo list for the new UI. If you or anybody else is able to do it you are welcome to submit a pull request. Code needs to be changed for the frontend

https://github.com/mariolukas/FabScanPi-Frontend

and some parts in the backend

https://github.com/mariolukas/FabScanPi-Server

 

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mario
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Good news, i was able to reproduce the error. I am working on a fix right now. But i think i need to run it a couple of times by using a debugger. I will keep you up to date.

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