Help with connecting my computer using Cura to my printer

[Calibrator 0]

I am connecting my Creality 3 V2 printer to the usb connector on my computer. But when I try to connect to the processor on the Creality printer, I get no response from the printer. My computer recognizes the connection when I plug in the printer by giving me an acknowledgement tone but the screen shows no connection and says "Not connected to a printer". I set up the printer settings in the application but there is no acknowledgement of an existing printer. I would like to setup my printer using Cura but I may have to go elsewhere. Any suggestions?

 

[Calibrator 0]

• Any and all suggestions are acceptable

[GregValiant 1,330]

The printer is not a "printer".  It is a USB Serial device so it is handled differently by the operating system.

There are a couple of things you can try.

You need an actual USB data cable.  A lot of the cables used by phones are for charging only and don't have the transmit/receive lines in them.

With Cura running go to the MarketPlace and "Installed" (can take a minute to load) and scroll down to USB Printing and make sure it is checked.

Try different USB ports.  If the USB-SERIAL (CH340) driver was installed on a particular USB port then it might not be available to other USB ports (my Win7 computer will only talk to the printer on a particular USB port but my Win10 laptop doesn't care which port I plug it into).

If you are on a Windows system bring up the Device Manager and then plug in the printer USB cable.  The screen should flash and refresh and under "Ports (COM and LPT)" should be a line describing the printer connection as "USB-SERIAL CH340 (COM4) where the COM number is particular to your connection.

The Cura USB Printing plugin will search for a printer every 5 seconds (thanks @ghostkeeper) so you can have the printer plugged in via USB before Cura starts, or you can plug it in after Cura starts.  It can take a minute or two for Cura to notice a COM port (as acknowledged in Device Manager) and then cycle through the baud rates until it finds what works.

 

Greg's SD Print Tool.zip

Edited July 19, 2022 by GregValiant
Update Zip File