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    • The Dual Switching Extruder has been tested to work with the latest version of the Marlin Firmware.

    • Other firmwares may be compatible but have not been tested.

  1. Changes that need to be done to the marlin firmware are all in the Configuration.h file.
    • Changes that need to be done to the marlin firmware are all in the Configuration.h file.

    • Line 149:

    • Set Extruders to 2

  2. Line 187:
    • Line 187:

    • #define SWITCHING_NOZZLE

    • Line 189:

    • 3

    • Line 190:

    • { 0, 100 }

  3. Depending on the direction the hotends are switching in on your printer:
    • Depending on the direction the hotends are switching in on your printer:

    • HOTEND_OFFSET_Y {0.0, -19.00}

    • HOTEND_OFFSET_X {0.0, -19.00}

  4. Set the thermistor for the the second hotend.
    • Set the thermistor for the the second hotend.

  5. Uncomment USE_ZMIN_PLUG
    • Uncomment USE_ZMIN_PLUG

    • This is where the Probe signal will go.

  6. Make sure both are set to false:
    • Make sure both are set to false:

    • Z_MIN_ENDSTOP_INVERTING

    • Z_MIN_PROBE_ENDSTOP_INVERTING

  7. Uncomment line 682:
    • Uncomment line 682:

    • Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN

  8. The Probe is offset from Hotend #1 (left Hotend). Lines 784-786.
    • The Probe is offset from Hotend #1 (left Hotend). Lines 784-786.

    • You may need to swap the X/Y values around if your Hotends switch in the X-direction.

    • X Offset: 45

    • Y-Offset: 19

    • Z-Offset: -3

  9. Line 882:
    • Line 882:

    • Make sure the Z-homing direction is set to -1

    • Lines 891-896:

    • Adjust your build platform size accordingly to fit the DSE assembly.

    • Note, the Z-height will be reduced by aprox. 50mm.

  10. Set the auto-leveling to:
    • Set the auto-leveling to:

    • AUTO_BED_LEVELING_BILINEAR

  11. Because of a bug in the current release of the marlin firmware we're setting the servo settings this way:
    • Because of a bug in the current release of the marlin firmware we're setting the servo settings this way:

    • Line 1922:

    • NUM_SERVOS 4

    • Line 1927:

    • SERVO_DELAY { 300, 300, 300, 1000 }

  12. Make sure to correctly map the pins you have connected signal cables from the servo and probe to pin numbers in your specific board-pins config.
    • Make sure to correctly map the pins you have connected signal cables from the servo and probe to pin numbers in your specific board-pins config.

    • The image shows the pins_RAMPS.h as an example.

    • Once happy with the configuration, upload the firmware to your printer.

    • Run through motion checks, enstop checks and homing.

    • Check that the auto levelling (G28 G29) is working as expected.

    • Also check that everything is heating up as it should.

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Makertech

Member since: 03/09/2018

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