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There are no dumb questions. I strive not to give dumb answers.
The entire USB Printing thing isn't very sophisticated. Cura looks for a port it can open and then tries several baud rates and sends M105 each time. When it gets a response that it understands, then it uses the port.
The printer isn't very complicated either. It will accept most any connection (whether it understands it or not is another question).
As you probably suspected, that leaves us with your new laptop. The screenshot below is the Windows 11 device manager. If you squint you can see that "Ports Com and LPT lists a single port as "USB-SERIAL CH340 (COM3)". The COM number will change depending on which port I have the printer plugged in to. But the port driver (in my case it's the "USB-SERIAL CH340" driver) is what allows the computer to "see" the printer. If the driver included with Cura isn't right for your hardware then that is likely the problem. Do a internet search for "USB to SERIAL" port drivers and you should come up with something that will work. My laptop is a couple of months old and has the 3.0 USB ports and I haven't had a problem.
The "USB Printing" plugin isn't maintained as no UM printers use it and no contributors/collaborators have attempted to try and bring it up to date/fix it. A main reason is what you are running into and that is the ridiculous amount of hardware and driver combinations out there both in the computers and in the printers. Printing via the cloud or Octoprint seems to be much preferred (I'm an SD card guy). For the most part - if USB Printing works that's great. If it doesn't then it doesn't.
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Here comes Cura 5.9 and in this stable release we have lots of material and printer profiles for UltiMaker printers, including the newly released Sketch Sprint. Additionally, scarf seams have been introduced alongside even more print settings and improvements. Check out the rest of this article to find out the details on all of that and more
We are happy to announce the next evolution in the UltiMaker 3D printer lineup: the UltiMaker Factor 4 industrial-grade 3D printer, designed to take manufacturing to new levels of efficiency and reliability. Factor 4 is an end-to-end 3D printing solution for light industrial applications
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GregValiant 1,455
There are no dumb questions. I strive not to give dumb answers.
The entire USB Printing thing isn't very sophisticated. Cura looks for a port it can open and then tries several baud rates and sends M105 each time. When it gets a response that it understands, then it uses the port.
The printer isn't very complicated either. It will accept most any connection (whether it understands it or not is another question).
As you probably suspected, that leaves us with your new laptop. The screenshot below is the Windows 11 device manager. If you squint you can see that "Ports Com and LPT lists a single port as "USB-SERIAL CH340 (COM3)". The COM number will change depending on which port I have the printer plugged in to. But the port driver (in my case it's the "USB-SERIAL CH340" driver) is what allows the computer to "see" the printer. If the driver included with Cura isn't right for your hardware then that is likely the problem. Do a internet search for "USB to SERIAL" port drivers and you should come up with something that will work. My laptop is a couple of months old and has the 3.0 USB ports and I haven't had a problem.
The "USB Printing" plugin isn't maintained as no UM printers use it and no contributors/collaborators have attempted to try and bring it up to date/fix it. A main reason is what you are running into and that is the ridiculous amount of hardware and driver combinations out there both in the computers and in the printers. Printing via the cloud or Octoprint seems to be much preferred (I'm an SD card guy). For the most part - if USB Printing works that's great. If it doesn't then it doesn't.
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