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Marlin 2.0.8 Firmware configured for FLSUN Super Racer with MKS Robin Nano V3 motherboard. Based on FLSUN sources.






Main features:

  • MKS Robin Nano V3 motherboard support
  • TMC2209 / TMC2226 UART drivers support
  • Nozzle & Bed PID support
  • Enabled thermal protection for Nozzle & Bed
  • Bed Leveling Bilinear 9 x 9 point support
  • Nozzle Park / Advanced Pause support with improved position
  • Babystepping with Combine Z-Offset support
  • EEPROM support
  • S-Curve Acceleration support
  • Bed Skew Compensation support (https://www.thingiverse.com/thing:2563185)
  • G26 - Mesh Validation Pattern support
  • G33 - Delta Auto Calibration support
  • Enabled StealthChop for extruder
  • Disabled Power Loss Recovery because not correctly implemented, repeated writes to the EEPROM are performed. Not good for EEPROM.
  • Binary file transfert support to transfer and update the firmware remotely
  • Enabled host prompt support
  • Enabled Firmware Info with M115
  • Enabled monitor for TMC drivers
  • Enabled M106 to report the new fan speed when changed
  • Improved probing speed
  • Improved buffer size
  • Fix TMC drivers settings
  • Disabled not used settings

Installation procedure:

  • Do an EEPROM reset before flashing the new firmware (command M502 followed by command M500 in a terminal or with the TFT screen).
  • Restart the printer.
  • Choose version you want here, SDCARD to use microSD Card port or USB to use USB port.
  • Copy Robin_nano_v3.bin file to the root of the microSD card (max capacity 32GB, formatted in FAT32, allocation unit size 4096).
  • With printer off, insert the microSD card into the dedicated port on the motherboard and turn on the printer.
  • Flash procedure starts (without displaying anything on the screen) and lasts a few seconds.
  • Check contents of the microSD card, Robin_nano_v3.bin file has been renamed to ROBIN_NANO_V3.CUR which indicates that the flash was successful.
  • It's possible after flash you loose text on TFT screen, select your language again and save.
  • Do an EEPROM reset again (command M502 followed by command M500 in a terminal or with the TFT screen).
  • Restart the printer.
  • To disable redundant "Not SD printing" commands:
    • M27 S0
  • Launch a Nozzle PID in a terminal:
    • M303 E0 S220 C8
    • Retrieve the values Kp, Ki and Kd then:
    • M301 PKp IKi DKd
    • Then M500 to save.
  • Launch a Bed PID in a terminal:
    • M303 E-1 S90 C8
    • Retrieve the values Kp, Ki and Kd then:
    • M304 PKp IKi DKd
    • Then M500 to save.
  • Launch an extruder calibration in a terminal:
    • Heat your hotend to its usual operating temperature :
    • M109 Sxxx where xxx is temperature
    • Make a pencil mark at 120mm on the filament from the hole on the top of the printer (where we insert the filament)
    • M83 to switch to relative mode.
    • G1 E100 F100 for extruding 100mm.
    • Wait until the end of the extrusion and measure if there is still 20mm of the line on the filament until the filament inlet otherwise apply this calculation:
      • To obtain extrusion length: 120 - (value measured between the line and the filament inlet)
      • To obtain number of steps to have extruded 100mm: (value of E-steps/mm) x 100. Default E-Steps value is 415.
      • To obtain the new E-steps/mm: (number of steps to have extruded 100mm) / (extrusion length)
    • M92 E(new E-steps/mm)
    • Then M500 to save.
  • Launch a Delta Calibration a wait until end of process :
    • Make sure to connect bed level probe before to start the following command.
    • G33
    • Then M500 to save.
  • Start auto-leveling from the TFT screen menu and adjust Z-Offset. Don't forget to save.

Link for a terminal: Printrun (ex Pronterface)

Screen firmware:

This Marlin firmware also requires updating the screen firmware, follow these instructions :

  • Format microSD to FAT32 with allocation unit size to 4096.
  • Extract screen firmware zip file here : Screen Firmware V1.3 and copy DWIN_SET folder to the root of the microSD card.
  • Turn off printer.
  • Remove the screen cover and insert the card into the microSD slot.
  • Turn on the printer.
  • Screen firmware installation begins immediately, you will see several scrolling lines.
  • When the END ! appears on the screen, turn off printer and remove the microSD card.
  • Installation is complete, you can replace the screen cover and turn the printer back on.

Capture d’écran 2021-10-01 à 18 59 01

Possible changes :

  • If you have SKR 1.3 motherboard, set these values :

    • In platformio.ini : default_envs = LPC1768
    • In Configuration.h : #define MOTHERBOARD BOARD_BTT_SKR_V1_3
    • In Configuration.h : #define SERIAL_PORT -1
    • In Configuration.h : #define SERIAL_PORT_2 0
    • In Configuration_adv.h : #define E0_AUTO_FAN_PIN P2_04

  • If you want to use microSD port :

    • In Configuration_adv.h : //#define USB_FLASH_DRIVE_SUPPORT

  • If you want to use USB port :

    • In Configuration_adv.h : #define USB_FLASH_DRIVE_SUPPORT

If you need to make any changes in sources files, please read this for compilation: here

Use VSCode et PlatformIO for compilation (see here).