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 6 months ago

Difficulty

Moderate

Steps

Available languages

Step 1 Introduction

⬢This guide will take you through the PrusaLink setup on your Original Prusa MK4, MK3.9, MK3.5, XL or MINI/+ printer.

⬢You will need to connect the printer to the network using Wi-Fi or Ethernet connection.

Some details differ on various printer types but in general, the process is the same. Note that on MINI/+, you have to install the Wi-Fi module first.

First, read the article about PrusaLink and Prusa Connect to get general information about these services.

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

Step 2 Networking options

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

⬢The preferred network connection type can be selected in the menu Settings > Network > Default

⬢Make sure Wi-Fi is selected.

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 to the network, use the connector on the back of the printer and skip to Obtaining the IP address.

Step 3 Setting up Wi-Fi

⬢The Wi-Fi setup wizard should show up after the first printer startup.

⬢The Wi-Fi setup wizard is also available in the menu Settings > Network > Wi-Fi > Setup Wi-Fi Module

⬢Hit Continue. The software in the printer's Wi-Fi ESP module will get updated automatically.

Step 4 Generating the credentials

⬢Hit Yes when prompted to generate credentials.

The printer will generate a prusa_printer_settings.ini configuration 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 5 Entering the credentials

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

⬢Using PrusaSlicer (recommended) - Continue to the next step: Editing the configuration file (PrusaSlicer)

⬢Manually using a text editor - Continue to this step instead: Editing the configuration file (text editor)

Step 6 Editing the configuration file (PrusaSlicer)

⬢Open up PrusaSlicer.

Make sure you are using PrusaSlicer version 2.7.0 or newer. Older versions do not support this feature. (Download the latest version at prusaslicer.org)

⬢Connect the USB drive to your computer.

⬢A Wi-Fi configuration window will show up. Alternatively, the window can also be accessed from the pop up message at the bottom. Fill in the:

⬢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 7 Editing the configuration file (text 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 the prusa_printer_settings.ini file created by the printer 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. Make sure nobody is watching!

⬢Save the file on the USB drive.

Step 8 Loading the configuration file

⬢Connect the USB drive back to the printer.

⬢hit Continue to load settings to the printer.

⬢

Wait until the connection is established - 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 in the configuration file. Then navigate to the Network > Wi-Fi > Load credentials to load a revised configuration file.

Step 9 Obtaining the IP address for PrusaLink

⬢To connect to the printer, you can either use PrusaLink over the local network,
or use Prusa Connect, the cloud service accessible from anywhere.

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

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

Note, this IP address is accessible on your local network only and might change over time according to your network setup.

Step 10 Logging into PrusaLink

⬢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 11 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:

⬢There must be a USB drive in the printer.

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

⬢The printer should be on the home screen. If there is any prompt on the LCD screen, the printer will reject any remote command.

⬢After the file is uploaded, open up the file details. From here, you can Start Print.

Step 12 Prusa Connect

⬢Great! You made it!

⬢

Now, you may want to Add the printer to Prusa Connect to be able to control the printer from the Internet 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 Setting up Wi-Fi

Step 4 Generating the credentials

Step 5 Entering the credentials

Step 6 Editing the configuration file (PrusaSlicer)

Step 7 Editing the configuration file (text editor)

Step 8 Loading the configuration file

Step 9 Obtaining the IP address for PrusaLink

Step 10 Logging into PrusaLink

Step 11 Printing via PrusaLink

Step 12 Prusa Connect

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