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configuration.md

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Software Configuration

Initial Voron Printer Configuration

Download the respective Voron base configuration file from the following links:

Using a secure file transfer program (WinSCP, Cyberduck, Notepad++, NppFT, BBEdit, scp), transfer the downloaded file to your Raspberry Pi into the folder ~/klipper/config.

Copy the downloaded file into place with cp ~/klipper/config/FILENAME_OF_VORON_CONFIG.cfg ~/printer.cfg

Note: There are many ways of editing the config file that vary by personal preference. Using Nano editor through SSH is simple but not always user friendly. Notepad++ with the NppFTP plugin (Windows) or bbEdit (macOS) are user friendlier alternatives. Instructions are found in the appendix.

Review the configuration file by running nano ~/printer.cfg

Klipper is CASE SENSITIVE. Be sure everything except comments is LOWER CASE.

Required Changes

The following items must be updated before the printer can function.

  • MCU path(s)
  • Thermistor types - hot end, heated bed
    • See 'sensor types' list at end of stock configuration file
  • Stepper settings (X, Y, Z(s), extruder)
    • Endstop position
    • Max position
    • Stepper type
  • Bed Screw / Tilt / Quad Gantry positions
  • Z endstop location

Change Details

Printer Definitions

In this section you set your maximum accelerations and velocity. The stock config is confgiured fast - so if you are facing issues - you can tweak these values lower and then increase them as you finish tuning your printer. These are the highest values that klipper will allow regardless of what you may have configured in your slicer.

[printer]
kinematics: corexy
max_velocity: 350
max_accel: 3000
max_z_velocity: 50
max_z_accel: 350
square_corner_velocity: 10.0

Square corner velocity is defined as:

The maximum velocity (in mm/s) that the toolhead may travel a 90 degree corner at. A non-zero value can reduce changes in extruder flow rates by enabling instantaneous velocity changes of the toolhead during cornering. This value configures the internal centripetal velocity cornering algorithm; corners with angles larger than 90 degrees will have a higher cornering velocity while corners with angles less than 90 degrees will have a lower cornering velocity. If this is set to zero then the toolhead will decelerate to zero at each corner. The default is 5mm/s.

Update Controller Path

Locate the section starting with [mcu]. The V2 will have an additional section starting with [mcu z] as it has two controllers. These sections are where the controllers are defined and identifying them so that Klipper which which components are connected (and to which controller if there is more than one).

  • Begin with all controllers disconnected from the Raspberry Pi.
  • For printers with just one controller, connect that controller to the Raspberry Pi. For printers with two controllers, connect the X/Y/E controller.
  • On the Raspberry Pi, run ls -l /dev/serial/by-id/.
  • The listing should look similar to this:

Note: If the device identifier has the word 'marlin' in it, the Klipper firmware is not loaded properly. Go back and re-load the Klipper firmware before continuing.

  • Copy the device ID (e.g. usb-Klipper_lpc1768_1FB0000802094AAF07825E5DC52000F5-if00) from the terminal window and paste into a temporary text file.
  • Open the configurtion file with nano ~/printer.cfg and navigate to the [mcu] section. Modiffy the "serial: /dev/serial" line and paste in the controller path so that is looks like the following: serial: /dev/serial/by-id/usb-Klipper_lpc1768_1FB0000802094AAF07825E5DC52000F5-if00
  • Exit the text editor with CTRL-X and save when prompted.

Update Second Controller Path (V2)

This section only applies to printers with more than one controller.

  • Connect the Z controller to the Raspberry Pi.
  • On the Raspberry Pi, re-run ls -l /dev/serial/by-id/.
  • The listing should look similar to this:

Note: If the device identifier has the word 'marlin' in it, the Klipper firmware is not loaded properly. Go back and re-load the Klipper firmware before continuing.

  • Identify the new device ID (e.g. usb-Klipper_lpc1768_0650000AA39C48AFABD4395DC22000F5-if00) and copy from the terminal window and paste into a temporary text file.
  • Open the configurtion file with nano ~/printer.cfg and navigate to the [mcu z] section. Modiffy the "serial: /dev/serial" line and paste in the controller path so that is looks like the following: serial: /dev/serial/by-id/usb-Klipper_lpc1768_0650000AA39C48AFABD4395DC22000F5-if00
  • Exit the text editor with CTRL-X and save when prompted.

Updating Printer Specific Settings

  1. Open ~/printer.cfg file again and scan through the file.
  2. Locate [stepper_x]. Uncomment the position_endstop and position_max that corresponds to your printer's size and delete the other options to prevent confusion.
  3. Under [tmcXXXX stepper_x], replace XXXX with either 2208 or 2209 to match the type of TMC drivers that are installed. For example, [tmc2209 stepper_x] for TMC 2209 drivers.
  4. Repeat steps 2 & 3 for the [stepper_y] section.
  5. Under [stepper_z], uncomment position_max for your printer size and delete the other options to prevent confusion. Also in the same method as step 3, update the [tmcXXXX_stepper] for configuration with the installed stepper type for all four Z motoros (Z, Z1, Z2, Z3).
  6. Under [extruder] verify that the sensor_type is correct. Do not worry about step_distance or PID values for now, they will be updated later in the setup process. Update [tmcXXXX extruder] in the same fashion as step 3 to match the installed stepper driver for the extruder.
  7. Under [heater_bed], verify the temperature sensor type is correct.
  8. Under [display], uncomment the display section that matches the installed display. Delete the others to prevent confusion.
  9. If printer is a V1, Under [z_tilt] and [screws_tilt_adjust], uncomment the sections appropriate to the printer size. Delete the other options to prevent confusion.
  10. If printer is a V2, Under [quad_gantry_level], uncomment the gantry_corners and points sections appropriate to the printer size. Delete the other options to prevent confusion.
  11. Exit the text editor with CTRL-X and save when prompted.

Under Octoprint's terminal tab type FIRMWARE_RESTART and press enter to send the command to restart Klipper.

The terminal window should show the following:

Recv: // Klipper state: Disconnect
[...]
Recv: // Klipper state: Ready

If after 30-60 seconds there is no Ready message, then run STATUS in the terminal window. If Klipper comes back Not Ready it will notify if there is a configuration issue that needs to be corrected.

Next: Initial Startup