As My bed is now 4mm higher, I was having lens dirty warning, I design a new 4mm thick support for the stricker and I have tried to print a new Bed Lidar Sticker but even if I think my image is perfectly good, I was unable with my laser printer to print a good enough print to replace the original sticker even on photo paper (the best result I got was the warning “Lidar lens is dirty”).
I ended to unstick the existing one and use it for now with success and I do not have any more warning on Lidar
But I was wondering what to do if the sticker get damaged, like sctratched by the nozzle ?
Is there a way to get a new sticker like the original ?
Ho, I don’t think so but that’s an interesting idea.
Actually the printed sticker look identical for a naked eye, but vieweing with a magniifier the original sticker is a lot better, printed ones have a lot of defect not visible with naked eyes.
Here are sticker (original at the right) side by side :
Ho, I have made a high dpi and vectorized version too, the one I have posted is a reduced version, the dot I show wich is zoomed is not a big one but one of the tiny on the 7x7 grid point , still look good ? (I am talking of the dots that are less than a milimeter of diameter)
EDIT: anyways, your look better, but does it work when calibrating the Lidar with it ?
Here is what I got but no luck with Lidar, still thinkng my lens is dirty :
EDIT2: I have absolutly no idea of what is important in that sticker, maybe having 7x7 ink stain is sufficient or maybe it requiere perfect circle for this 7x7 grid and they use something a bit more sofisticated as Hough circle detection in wich case I already know I wont be able to print perfect circle for thoses little points on my old Samsung C48X
Just a quick thought on this. Most LiDAR systems operate in the Near-Infrared (NIR) portion of the spectrum. Printer inks are usually optimized for the Visible portion of the spectrum, meaning that something printed in black ink will show up as black to our eyes but might not show up as black (low reflectance) to the laser. It might actually be highly reflective at those wavelengths, so the software thinks the sticker is dirty because light is being reflected where it expects to see a dark pattern. This is common with a lot of organic material. For example, black cotton t-shirts tend to show up really bright in NIR.
Interesting thing to take into account, I would try to make some test at least with the very few tools I have to work on the non visible light (note one of the two laser is clearly visible by the camera on the X1C
My X1 Carbon has a torn calibration sticker, the dots are not aligned and lidar calibration always fails. Messaged Bambu support and 19 days later (crazy…) they got back to me with a PDF file of the calibration stickers. But I’m going to bring this forum post up to them because I honestly have no idea if it will be sufficient to just print off the stickers, and honestly if it is special ink or a special process being used, then they should be able to ship out these stickers to their paying customers.
I have the file, I can send it if you need it, it would have to be somewhere else because Bambu forums don’t take PDFs.
The real problem is making a sticker that works. Regular ink jet printers on their highest dpi settings will still not get the quality close enough to whats needed for the lidar to work propely. Its almost as if the Lidar doesn’t even see the paper. I asked Bambu support about this and they said there’s nothing special about the paper and that theoretically everything should work but we still can’t give you one lol. Someone on here said they were working on printing higher quality stickers and we haven’t heard anything else from them. And I have an ink jet sticker printed off in high quality and stick on exactly where the old sticker is and the lidar can’t calibrate off of it. So I have just been running my x1c without being able to calibrate the lidar
I have managed after tens of trie to print a working one, but it is a matter of good paper, printer health, settings, ambiant température & humidity, etc…
But yea, they’re frankly hard to print, and the print quality of the original is very high when seeing under a microscope.
Scanning/Original image is not the problem , I have it in different format (raw scan, IA scan modified, vectorized by PS etc… etc…) all are very high qualty.
I Believe anyone with a decent and ven old scanner can get the image with a higher enough DPI/Quality easily
Likely not much help but maybe they still have all their shipped stuff - my printer came with a spare one. Don’t remember how it was packed, but it was included with the printer last November…
Mine is pretty new, and also came with an extra. Frankly, it’s crazy if they don’t sell them or give them away. Bambu seems to be such an engaged company, interested in feedback and improvement. This is just bizarre. They should at least ship out spares with certain accessories. Like every metal print bed sheet should include one.
? (I am talking of the dots that are less than a milimeter of diameter)
