PowerShell script to make BambuStudio discover a specific printer by IP address, even if it is not on the same subnet (see BambuStudio Issue #702)

bambulab-discover.ps1

# Send the IP address of your BambuLab printer to port 2021/udp, which BambuStudio is listens on.
#
# Ensure your PC has firewall pot 2021/udp open. This is required as the proper response would usually go to the ephemeral source port that the M-SEARCH ssdp:discover message.
# But we are are blindly sending a response directly to the BambuStudio listening service port (2021/udp).
#
# Temporary solution to BambuStudio not allowing you to manually specify the Printer IP.
#
# Author(s): gashton <https://github.com/gashton>, Fritz webering <https://github.com/fritzw>
#
param (
   [string]$PRINTER_IP = "10.80.2.50"  # IP address of your BambuLab Printer
)
$TARGET_IP="127.0.0.1" # IP address of your PC running BambuStudio.
$PRINTER_USN="000000000000000" # Enter your own Printer Serial Number here
$PRINTER_DEV_MODEL="3DPrinter-X1-Carbon" # Set this to your model
# PRINTER_DEV_MODEL: https://github.com/bambulab/BambuStudio/tree/master/resources/printers
# X1C    : "3DPrinter-X1-Carbon"
# X1     : "3DPrinter-X1"
# X1E    : "C13"
# P1P    : "C11"
# P1S    : "C12"
# A1 mini: "N1"
# A1     : "N2S"
$PRINTER_DEV_NAME="MY-X1C" # Here you can choose any name you want for your printer, which is shown in the slicer.
$PRINTER_DEV_SIGNAL="-44" # Good Signal (Artificial), WiFi icon in BambuStudio will appear green with full-bars.
$PRINTER_DEV_CONNECT="lan" # LAN Mode
$PRINTER_DEV_BIND="free" # Not bound to a Cloud user-account.


$remoteudpport=2021           # port to send to
$sourceudpport = 0             # SourcePort, maybe empty uses and available port
$message = "HTTP/1.1 200 OK`r`nServer: Buildroot/2018.02-rc3 UPnP/1.0 ssdpd/1.8`r`nDate: $(date)`r`nLocation: ${PRINTER_IP}`r`nST: urn:bambulab-com:device:3dprinter:1`r`nEXT:`r`nUSN: ${PRINTER_USN}`r`nCache-Control: max-age=1800`r`nDevModel.bambu.com: ${PRINTER_DEV_MODEL}`r`nDevName.bambu.com: ${PRINTER_DEV_NAME}`r`nDevSignal.bambu.com: ${PRINTER_DEV_SIGNAL}`r`nDevConnect.bambu.com: ${PRINTER_DEV_CONNECT}`r`nDevBind.bambu.com: ${PRINTER_DEV_BIND}`r`n`r`n"

$udpClient = new-Object system.Net.Sockets.Udpclient($sourceudpport) 
$byteBuffer  = [System.Text.Encoding]::ASCII.GetBytes($message)
$sendbytes = $udpClient.Send($byteBuffer, $byteBuffer.length, $remoteip, $remoteudpport)
if ($sendbytes -ne $byteBuffer.length) {
   write-host "Mismatch bytes"
}

I have an A1 but I wanted to use this script and was really struggling to get the PRINTER_DEV_NAME PRINTER_DEV_MODEL. After digging into Wireshark I found the model is N2S for Bambu A1 printers.

@rbclark Actually, for PRINTER_DEV_NAME you can set an arbitrary string. This will then be shown in BambuStudio / OrcaSlicer in the devices Dropdown menu as the name of the printer. Maybe I should add a comment to that effect. Not sure about the importance of the other strings though.

That was not my experience. When the name was wrong Bambu Studio refused to print with a “the selected printer is incompatible with the chosen printer presets” error. This resolved when I properly set the name.

@rbclark Interesting. You are sure that it was NAME and not MODEL? Because for our two X1 Carbons we have customized the NAME field as shown in the gist above. That is our custom value, the default name was actually something else. But maybe it's different for the A1 but it seems to counterintuitive that Bambu Lab would use the printer name to check if it is compatible.

@fritzw You are 100% right, that's what I get for responding late at night. The MODEL for the A1 is N2S not the NAME. I went ahead and corrected my original comment as well to hopefully not confuse anyone.

For people want to know the printer model, feel free to check bambulab repo here:

https://github.com/bambulab/BambuStudio/tree/10e53651b3188d02a3c112e30111743823f56e91/resources/printers

For example:
A1: N2S
A1 Mini: N1

# printer_type: https://github.com/bambulab/BambuStudio/tree/master/resources/printers
# X1C    : "3DPrinter-X1-Carbon"
# X1     : "3DPrinter-X1"
# X1E    : "C13"
# P1P    : "C11"
# P1S    : "C12"
# A1 mini: "N1"
# A1     : "N2S"

Thanks a bunch for this. An elderly friend of mine, bought an A1 combo recently, and he wasn't able to connect to it by any means. I helped him out with a remote session to his PC and found that no, neither Bambu Studio nor OrcaSlicer were able to find the printer, probably because it's a common wifi network with probably a few blocks for multicast etc. I tried this script and it worked well after a couple of hours of struggling. Big thanks!

I can surely confirm this method works on even complex networks, thanks a lot.