Project Dashboard Tutorials Mini 3 Micro SD Card Swap Workflow

1 Preparation

Access Mainsail: Ensure you can access the printer’s Mainsail web interface through a web browser. You'll need this for the software setup.

Save Your Files: If there are any gcode files on the printer, download them via Mainsail.

Turn Off the Printer: Power off the printer before proceeding.

Good Lighting: Move the printer to a well-lit area to clearly see the SD card slot.

Power off printer

2 Removal of the Old SD Card

Lift the Card: Use a small tool, like the edge of a metal ruler, to lift the SD card slightly.

Remove the Card: Once lifted, use tweezers to pull the card out completely.

Grab the SD card
Remove SD card

3 Installation of the New SD Card

Locate the Slot: Ensure the SD card slot on the circuit board is visible. Be careful not to drop the card into the control box.

Insert the New Card: Insert the card with the gold contacts facing down and to the right. Push it into the slot until it touches the bottom.

Align sd card with back of slot
Place SD card i slot
Gently push SD card into slot
SD card seated

4 Software Setup

Power On the Printer: Turn the printer back on.

Reconnect Wi-Fi: If you were using Wi-Fi, reconnect by selecting your network and entering your password.

Note the IP Address: When the IP address appears, use it in a web browser to access the Mainsail interface.

Configure Printer:

  • In Mainsail, go to Config and Updates and check the box to show hidden files.
  • Open the .printer_ids.cfg file.
  • Click Devices and refresh to detect the ID numbers. Copy the first ID, then paste it into the appropriate location in the .printer_ids.cfg file.
  • Repeat for the second ID, ensuring both are updated.

Save and Restart: After updating the IDs, save and restart the printer.

Enable show hodden files
printer_ids.cfg file
Refresh devices
UUID and where they go
UUID copied to the cfg file
Save & restart

5 Recalibration

BLTouch Probe Calibration:

  • From the touchscreen, go to More > Z Calibrate > Start > Probe.
  • When prompted, use a sticky note to calibrate the nozzle's height by adjusting it until it just touches the paper.
  • Save the new calibration value.

Z-Endstop Calibration:

  • Go to More > Z Calibrate > Start > Z Endstop.
  • Use the same process with the sticky note to adjust the nozzle's position.
  • Save the new Z-Endstop calibration.

6 Final Checks

Run a test print using the "5_Circles" print.

Adjust the Z-offset if necessary and save any changes using the Save Z-Endstop button.

Done! Take me home