nanoDLP

ConsummatePro

Member

Registered: 2021-01-24

Posts: 18

Some layer images not displaying in NanoDLP but image files look OK

I've noticed several times that NanoDLP seems to have trouble displaying some of the image layers - this caused one print to fail since it couldn't display the layer. I've since started doing a quick playback to see if there are problems with the sliced files after import. When I check the corresponding layer image on my Mac, it looks perfectly fine. Odd thing is that it only affects some of the image layers in NanoDLP yet most of the others are OK.

If I look in the plate directory, the bad layers all have a zero file size, but the others are fine.

Here's what I'm seeing, and the odd thing is that it's not happening with every file. I can't figure out which files don't work.

If I decompress the zip file on my Mac, those layer files look OK to me.

Example screenshot:


]

Here is the uploaded sliced file:  In this file, hundreds of zero plate images are in the NanoDLP plate directory but they are all intact on the zip file:
https://www.dropbox.com/s/ymogi1p5ea04e … n.zip?dl=0

ConsummatePro

Member

Registered: 2021-01-24

Posts: 18

Re: Some layer images not displaying in NanoDLP but image files look OK

I re-flashed the image, reinstalled NanoDLP and the same issue occurs with a USB upload (network upload fails still - see other thread).

Here's a sample directory listing:
-rw-r--r-- 1 root root 257390 Feb  7 14:20 71.png
-rw-r--r-- 1 root root 317405 Feb  7 14:20 720.png
-rw-r--r-- 1 root root 317575 Feb  7 14:20 721.png
-rw-r--r-- 1 root root 266240 Feb  7 14:20 722.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 723.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 724.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 725.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 726.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 727.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 728.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 729.png
-rw-r--r-- 1 root root 257391 Feb  7 14:20 72.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 730.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 731.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 732.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 733.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 734.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 735.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 736.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 737.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 738.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 739.png
-rw-r--r-- 1 root root      0 Feb  7 14:20 73.png

With the last file upload using the other SD card, there were different files that had a zero size (eg. 5.png was zero on the prior SD image, but on this upload using this image, 5.png is 63794 bytes)

ConsummatePro

Member

Registered: 2021-01-24

Posts: 18

Re: Some layer images not displaying in NanoDLP but image files look OK

Actually this might be the same issue for free space being reported as full even though this is now a 64 GB SD card (wth over 57 gigs free), and tmp is in the root directory - feel free to close this thread and use the other about free space instead.

This is a partial clip from the logs after trying to upload via USB:

Notice    0    2021-02-07 14:43:42.198438    Upload    Plate file has been uploaded
Error    0    2021-02-07 14:42:42.228085    Plate    Issue copying image file write /tmp/309066276688003608/999.png: no space left on device
Error    0    2021-02-07 14:42:42.198454    Plate    Issue copying image file write /tmp/309066276688003608/998.png: no space left on device
Error    0    2021-02-07 14:42:42.168805    Plate    Issue copying image file write /tmp/309066276688003608/997.png: no space left on device
Error    0    2021-02-07 14:42:42.139323    Plate    Issue copying image file write /tmp/309066276688003608/996.png: no space left on device
Error    0    2021-02-07 14:42:42.109694    Plate    Issue copying image file write /tmp/309066276688003608/995.png: no space left on device
Error    0    2021-02-07 14:42:42.080238    Plate    Issue copying image file write /tmp/309066276688003608/994.png: no space left on device
Error    0    2021-02-07 14:42:42.050406    Plate    Issue copying image file write /tmp/309066276688003608/993.png: no space left on device
Error    0    2021-02-07 14:42:42.020909    Plate    Issue copying image file write /tmp/309066276688003608/992.png: no space left on device
Error    0    2021-02-07 14:42:41.990906    Plate    Issue copying image file write /tmp/309066276688003608/991.png: no space left on device
Error    0    2021-02-07 14:42:41.952666    Plate    Issue copying image file write /tmp/309066276688003608/990.png: no space left on device
Error    0    2021-02-07 14:42:41.923277    Plate    Issue copying image file write /tmp/309066276688003608/99.png: no space left on device
Error    0    2021-02-07 14:42:41.893538    Plate    Issue copying image file write /tmp/309066276688003608/989.png: no space left on device

Last edited by ConsummatePro (2021-02-07 22:47:21)

Shahin

Administrator

Registered: 2016-02-17

Posts: 3,541

Re: Some layer images not displaying in NanoDLP but image files look OK

Yes it is same issue I think we should tag plate corrupted for such issues.

ConsummatePro

Member

Registered: 2021-01-24

Posts: 18

Re: Some layer images not displaying in NanoDLP but image files look OK

Yes - great idea! If it did that, I wouldn't have wasted a print when the app suddenly found a corrupted file in the middle of the print!