B1 printing a blank label #17
Comments
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I had the same problem with D101. The discrepancies I found:
There might be more differences (like it alternates between I have no idea what the "1" part in |
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@aprosvetova do you mind sharing the traffic capture? I'm trying to collect data for different models to analyze protocol differences. |
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Here you go @AndBondStyle. |
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Oh, I forgot to add something important. |
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Sorry,one question,does this disables NFC so i can use any label?Thank you |
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@Mugne2010 nope the NFC part is handled by the printer. The printer even stores the amount of uses per label serial number to not let you go backwards with it. I cloned the tag when I had 17 uses, then printed a new label, tried emulating the first dump, and the printer still returned 18 uses. Some deeper analysis is needed though. Say, if we are able to change the serial number in the dump, we might make the printer think it’s a new label. I’m pretty sure it won’t be easy, they either sign the tag content or straight up encrypt it. If anyone is interested to look more into it, the NTAG password is 12 34 56 78. |
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I tried changing the |
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@MoshiBin I'd suggest you to record the traffic between your printer and the app. Maybe there are more differences in packets for your printer model.
You can share the dump here if you need help reading it. |
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I have a B1 hardware version 5.10, firmware version 5.11. It was also printing blanks for me. Turned out to be the same issue as for @aprosvetova. In addition I needed to increase the timeout as with only this fix the printing was cut in the middle. sniffed data: patch: |
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The updated setdimensions work on B21S, the third parameter is quantity |
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Same here on B1, I try print via USB instead, also blank label |
When I try to print any image, the the printer just prints an empty label with nothing printed on it.
Printing from the app works correctly - so it's not a hardware issue.
This is a B1, firmware version 5.10.
Here's one verbose log of trying to print one of the example files:
I also tried creating a file with the exact dimensions for my label - it's 40mm x 30mm so I went with
(40mm * 8ppmm) - 16px = 304pxby(30mm * 8ppmm) - 16px = 224px- same issue, label prints empty.Looking at #3 I thought I had the same issue, so I picked the PR #12 and tried again, still printed a blank label:
Long verbose log snippet
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