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"
}

# 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.