⬢This guide will take you through the Wi-Fi module installation and configuration on the Original Prusa MINI/MINI+.

⬢Release and remove the M3 screw on top of the electronics box.

⬢Remove the printed cable cover.

⬢There are two safety latches on the sides of the power switch. Use the Allen key to push the first latch from the "USB side".

⬢While pressing the latch, push the "USB side" of the power switch out of the box.

⬢Push on the power switch and tilt the side with the pressed latch out.

⬢Push the second latch on the other side of the power switch.

⬢Pull the power switch out of the box.

You can also use needle-nose pliers to squeeze the latches.

⬢ESP Wi-Fi module (1x)

⬢USB drive (1x) with at least 10 MB of free space.

⬢Locate the 8-pin header connector on the Buddy control board.

⬢Plug the ESP module into the 8-pin header. See the correct orientation in the picture.

⬢Push the power cables back into the electronics box.

⬢Make sure that the OFF "o" symbol is on the right.

⬢Insert the switch into the opening in the box while holding the edges of the box until the switch clicks in.

⬢Before covering the electronics, make sure the square nut is correctly positioned in the printed part. The nut must not fall out! This can cause fatal damage to the electronics.

⬢Insert the cover back in, make sure it is properly seated in the holes.

⬢Now, tighten the cable cover. Check that no cable is pinched.

⬢Connect the USB drive to PC.

⬢On your PC, go to help.prusa3d.com.

⬢From the list of products, select Original Prusa MINI+.

⬢Download the latest firmware.

⬢Extract the zip file and save the firmware files (.bbf extension) on the USB drive.

⬢Connect the USB drive to the printer.

⬢Connect printer to the power supply and turn it ON.

⬢Confirm the update by selecting the FLASH button on the screen.

⬢Confirm the update by selecting the FLASH button. Both bootloader and firmware will flash automatically.

⬢Wait until the process is completed. It will take several minutes, several restarts, because multiple flashing stages are necessarry. Please be patient!!!

⬢Keep the USB drive connected to the printer.

⬢After flashing the firmware, you will be prompted to proceed with the setup Wizard. It is not necessary to proceed with the setup Wizard (all values from the previous version are saved without any changes) but recommended to check that all functions are working correctly.

⬢The printer will now update the Wi-Fi module firmware.

The update may take several minutes. Please wait until it is complete.

⬢After a successful update, click Continue.

⬢On the next screen, click Continue. We will need to create your credentials first.

⬢In this step, the printer creates the necessary configuration files on the USB drive. Click on Continue.

⬢The config files are created on the USB drive. Click on Continue and disconnect the USB drive from the printer.

⬢Connect the USB drive to PC.

⬢Locate the prusa_printer_settings.ini file on the USB drive created by the printer. Open the file in any text editor.

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

⬢Now, go to the fourth line named psk= and write down the Wi-Fi password. Make sure nobody is watching!

⬢Save the file on the USB drive.

⬢Return to the printer. Connect the USB drive into it and click on Continue.

⬢Wait until the files are copied from the USB drive to the printer. Do not disconnect the USB drive while copying.

⬢The installation of the Wi-Fi module has been successfully completed. The printer will now search for the Wi-Fi connections according to your credentials. It may take several minutes. Click on Continue.

If nothing happens after 5 - 8 minutes, connect the USB drive to your PC and check again your credentials in the prusa_printer_setting.ini file. Connect the USB drive to the printer and on the LCD navigate to Settings -> Network -> Wi-Fi -> Load credentials and follow the instructions on the printer.

⬢As soon as the Wi-Fi is connected successfully, you will be informed. Click on Continue.

⬢After successful setup and established connection, you will see a bright Wi-Fi icon in the top status bar of the display.

⬢Follow instructions in the next step to obtain printer's IP address and API-key.

⬢To access PrusaLink or connect PrusaSlicer with your printer, you have to know printer's IP address and API-key.

⬢On the screen, navigate to Home > Settings > Network, there is the IP address of your printer.

⬢From the Network menu, navigate to PrusaLink > Current API Key line. (for example neQQogERuMo4RNd).

⬢Note down both IP Address and the API Key.

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

⬢Type in the API Key when prompted.

⬢To transfer a G-code to your printer, simply drag the file into the marked area of the web page.

⬢Make sure the printer is ready to print:

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

⬢Start a Print.

⬢Good job! You have successfully installed the Wi-Fi module and connected your printer to PrusaLink.

⬢Now, you can delete the configuration file from the USB drive for security reasons.

Did you know, you can also use PrusaLink over the wired network using the Ethernet connector on the back of the printer? Visit Settings > Network > Interface to select the preferred connectivity option.

⬢If you plan to also use another printer type or just crave for more info, visit the Prusa Connect and PrusaLink explained article.