Wi-Fi and PrusaLink setup (MK4, MK3.9, MK3.5, XL, MINI/+)

Relevant for:

MINI MINI+XL MK4 MK3.9 MK3.5 MK3.5S

Last updated 21 days ago

Difficulty

Moderate

Steps

Available languages

Step 1 Introduction

⬢This guide will walk you through connecting to a network and setting up PrusaLink on your Original Prusa MK4/S, MK3.9/S, MK3.5, XL or MINI/+ printer.

For general information about the remote connectivity services, check out the PrusaLink and Prusa Connect article.

Some details differ on various printer types but in general, the process is the same.

on MINI/+, you have to install the Wi-Fi module first.

⬢Insert the bundled USB flash drive into the printer and keep it there.

Step 2 Networking options

⬢Your assembled Original Prusa MK4/S comes with a pre-installed ESP Wi-Fi module.

⬢The preferred network connection type can be selected in the menu Settings > Network > Active Interface (called "Default" in older firmwares).

⬢Make sure Wi-Fi is selected, in order to use it.

Note: The Wi-Fi module supports 802.11 b/g/n 2.4 GHz networking only. A 5Ghz network will not work.

⬢If you prefer the wired Ethernet connection, use the connector on the back of the printer and skip to PrusaLink: IP Address.

Step 3 Wi-Fi Setup (NFC / Prusa App)

⬢At the first printer startup, the Network setup screen shows up automatically.

⬢Or, open up the Wi-Fi setup wizard in the menu Settings > Network > Wi-Fi > Wi-Fi Wizard

⬢On MK4S, we recommend to upload your Wi-Fi credentials via the NFC using the Prusa Mobile App.

⬢Follow the on-screen instructions and hold your phone within 2–3 cm of the NFC antenna.

⬢After a successful connection, skip to the PrusaLink: IP Address.

⬢To use another method of entering the credentials, select Cancel, choose from the Wi-Fi wizard menu and continue to the next step.

Step 4 Wi-Fi Setup (Scan / Manual)

⬢To enter the Wi-Fi credentials on the printer alone, select Scan networks.

⬢Select the preferred network in the list.

⬢Enter the password using the on-screen T9 keyboard.

⬢After a successful connection, skip to the PrusaLink: IP Address.

⬢To use another method of entering the credentials, continue to the next step.

Step 5 Wi-Fi Setup (From File)

⬢To enter the Wi-Fi credentials using your computer, select Load config from file.

⬢With firmware 6.0.0 or newer, the printer will wait for a valid config file.

⬢

With firmware older than version 6.0.0, the printer generates a prusa_printer_settings.ini file on the USB drive.

⬢Remove the USB drive from the printer.

If there is a valid configuration file on the USB drive already, you can skip these steps and just load it straight away.

Step 6 Wi-Fi Setup (File Editing Methods)

⬢There are two ways to fill in the Wi-Fi connection credentials into the configuration file:

⬢Using PrusaSlicer (recommended) - Continue to the next step: Wi-Fi Setup (File - PrusaSlicer)

⬢Manually using a text editor - Continue to this step instead: Wi-Fi Setup (File - Editor)

Step 7 Wi-Fi Setup (File - PrusaSlicer)

⬢Open up PrusaSlicer and connect the USB drive to your computer.

⬢

If the Wi-Fi config generator hasn't opened automatically, navigate to:

Configuration > Wi-Fi Configuration File

Then fill in:

⬢SSID: Select or write down the name of the Wi-Fi network you wish to connect your printer to.

⬢Password: Write down the Wi-Fi password. Make sure nobody is watching!

⬢Drive: Make sure the USB drive from your printer is selected.

⬢Click the Write button to save the settings.

Step 8 Wi-Fi Setup (File - Editor)

If the PrusaSlicer method doesn’t suit you, you can also insert the Wi-Fi credentials manually, using a text editor.

Skip this step, if you have already set the credentials in PrusaSlicer.

⬢Connect the USB drive to your computer.

⬢Locate or create the prusa_printer_settings.ini file on the USB drive. Open it up in text editor.

⬢Go to the second line named ssid= and write down the name of the Wi-Fi network you wish to connect your printer to.

⬢Go to the third line named psk= and write down the Wi-Fi password.

⬢Save the file on the USB drive.

Step 9 Wi-Fi Setup (File Loading)

⬢Connect the USB drive back to the printer.

⬢The firmware 6.x.x and newer will load the settings automatically.

⬢

A successful connection is indicated by the Wi-Fi icon on the top of the screen.

⬢In case youre using the wired Ethernet connection instead, another icon appears.

If the Wi-Fi connection wasn’t established, verify the settings you entered. The file can be re-loaded using the menu Network > Wi-Fi > Wi-Fi Wizard > Load config from file

Step 10 PrusaLink: IP Address

⬢Verify the printer is successfully connected to the network, indicated by the icon on the top left part fo the display.

PrusaLink is accessible over the local network only, unlike the Prusa Connect, which is accessible from the Internet.

⬢To start using PrusaLink, we need to obtain the printer’s IP address. Navigate to the menu Settings > Network > IPv4 Address. Note down the IP address shown.

Note, this IP address might change over time according to your network setup.

⬢Open up a web browser on your computer. Insert the IP address into the address line and open it up as a webpage.

Step 11 PrusaLink: Login

⬢PrusaLink webpage should appear, requesting a log-in.

⬢On the printer, navigate to Settings > Network > Prusalink to get the username and password.

⬢Use the provided username and password to log into PrusaLink on your computer.

We recommend using Chrome or Firefox browser as there might be login issues when using Safari or Edge.

Step 12 Printing via PrusaLink

⬢To start printing using PrusaLink, navigate to the Storage tab.

⬢Select a G-code file to be printed or drag&drop it into the marked area.

⬢Make sure the printer is ready to print:

⬢A USB drive must be inserted into the printer.

⬢An empty and clean print sheet must be attached on the heatbed.

⬢The printer must be on the home screen. If there's a prompt on the LCD, it may reject remote commands.

⬢Once the file is uploaded, open the file details and select Start Print.

Step 13 Prusa Connect

⬢Great! You made it!

⬢

Now, you may also want to Add the printer to Prusa Connect to be able to control the printer from anywhere, using the Prusa Connect cloud service.

Wi-Fi and PrusaLink setup (MK4, MK3.9, MK3.5, XL, MINI/+)

Wi-Fi and PrusaLink setup (MK4, MK3.9, MK3.5, XL, MINI/+)

Step 1 Introduction

Step 2 Networking options

Step 3 Wi-Fi Setup (NFC / Prusa App)

Step 4 Wi-Fi Setup (Scan / Manual)

Step 5 Wi-Fi Setup (From File)

Step 6 Wi-Fi Setup (File Editing Methods)

Step 7 Wi-Fi Setup (File - PrusaSlicer)

Step 8 Wi-Fi Setup (File - Editor)

Step 9 Wi-Fi Setup (File Loading)

Step 10 PrusaLink: IP Address

Step 11 PrusaLink: Login

Step 12 Printing via PrusaLink

Step 13 Prusa Connect

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