SEPTEMBER 2023

What's new in this release

• Run-out sensor disabled by default
• Selectable square/circle grid mesh viewer (C29 V#)
• Status messages timeout increased to 90 seconds
• Changed thumbnail size to 190x190 in Cura post processing script
• Disables stepper drivers after aborting the print job
• Code optimization

Note1: In latest releases I'm promoting UBL versions over ABL, but ABL versions will be available through custom compile. If you had a G29 to make an ABL leveling before each print change it to G29 P1 for UBL. MPC is also being incorporated in replacement of the hot-end PID which will continue to be available on custom compiles.

Note2: Due to lack of program memory space in the STM32F401RCT6 SoC some features had to be disabled for the F4 UBL firmware version, for example: BAUD_RATE_GCODE, INDIVIDUAL_AXIS_HOMING_SUBMENU, SOUND_MENU_ITEM, LONG_FILENAME_WRITE_SUPPORT, BINARY_FILE_TRANSFER, POWER_LOSS_RECOVERY.

CV LASER MODULE SUPPORT for Ender-3S1!!

https://github.com/mriscoc/Special_Configurations/releases/tag/CVLM

This firmware is based on Marlin, has been optimized and has enhancements for the Creality Ender 3 V2/S1 printer. This is an universal firmware that can be used in both RET6 and RCT6 STM32 chips that have 256k or 512k Flash memory. The firmware and its wiki are not really intended for beginners but as a supplement to already existing guides.

How to install the firmware

Requirements

In order to use this firmware, your printer must meet the following requirements:

• A compatible control board: Creality 4.2.2, 4.2.3, 4.2.7, V24S1_301 or SKR Mini E3 V3 for Ender series printers with a STM32F103 or STM32F401 SoC.
• A DWIN, DACAI, TJC or SYNWIT color display with encoder knob. Touch or legacy monochrome screens are not supported.

You can modify your printer to meet these requirements.

Versions and binary name nomenclature

• Ender 3v2 MM: if you have the Ender 3v2 near to stock then use this version (Manual Mesh).
• Ender 3v2 BLT: use this version if you installed a CR/3D/BLTouch level sensor in the Ender 3v2.
• Ender 3S1: use this version if you have an Ender 3S1 printer with CRTouch, (F1 is for the STM32F103 and F4 is for the STM32F401 SoC)

You can download the latest binaries from the assets at the bottom of the release page. To know if you have the last release go to the info page in the display of your printer and compare the release build date with the name of the binary file.

MM - Firmware for Manual Mesh, use it if you don't have a probe.
BLT - BL/3D/CR Touch probe support.
UBL - Unified Bed Leveling
T13 - Marlin #13 temperature sensor (like Sprite Pro Extruder)
IS - Input Shaping
LA - Linear Advance
MPC - Model Predictive Temperature Control
CVLM - CV Laser Module
EZABL - support the "EZABL Pro" probe from TH3D Studio

The filename follows the convention:

Ender3V2-422-MM-YYYYMMDD.bin

Where YYYYMMDD indicates the date of the build. 422 refers to the mainboard version 4.2.2, 423 refers to the mainboard version 4.2.3, and 427 is for the 4.2.7 mainboard version, if you got a 4.3.1 board use the 422 version. SKRMINI version is currently for the BTT SKR Mini E3 V3 board (needs a screen adapter).

For example, if you want a firmware for your Ender-3 V2 printer with a control board version 4.2.2, CRTouch and support for UBL, you should download the file:

Ender3V2-422-BLTUBL-YYYYMMDD.bin

UBL versions

Binaries with UBL in their filename have support for Marlin Unified Bed Leveling, this system is similar to the bilinear leveling but with a few extra features to provide users with more control. There are multiple guides on the web about UBL, we recommend reading about it before using this new leveling system.

• https://marlinfw.org/docs/features/unified_bed_leveling.html
• https://all3dp.com/2/marlin-ubl-unified-bed-levelin-simply-explained/
• https://www.3dmakerengineering.com/blogs/3d-printing/unified-bed-leveling-marlin
• https://hackaday.com/2022/01/14/3d-printering-getting-started-with-universal-bed-leveling/

Model Predictive Temperature Control (MPC)

In the latest releases MPC is being incorporated in all versions. MPC has proven to be a better algorithm for keeping the nozzle temperature stable, and is also very useful for high power heaters.

Note: Due to lack of program memory space in the STM32F401 SoC, not all the features are available for the precompiled binaries of Ender 3S1 F4, for the F4 with UBL version more standard feature had to be removed.

Special versions

There are several special configurations here: https://github.com/mriscoc/Special_Configurations/releases

• Linear Advance (LA) versions
• Input Shaping (IS) versions
• Marlin #5 temperature sensor (T5) V6/Volcano
• Marlin #13 (3950) temperature sensor (T13) 300°C support (Sprite Extruder Pro)
• CV Laser Module Support (CVLM)

Compiling your firmware flavor

We do not provide basic support on compiling the source code, please refer to the many places on the web for how to compile the Marlin firmware. Custom firmware can be build using the Configurator and following the guidelines in the Special Configurations repository:

Community links

• Telegram
• Reddit
• Ender 3V2 Facebook
• Ender 3S1 Facebook

Donations

Thank you for your support, I receive donations through Patreon and Paypal

Firmware features

• Universal RCT6/RET6 Ender 3 V2/S1 Support
• DWIN / DACAI / TJC / SYNWIT display support
• Improved support for Manual Mesh and CR/3D/BLTouch
• Runout icon indicator over the Extruder flow dashboard icon
• Dashboard Speed shows the current axes speed in mm/s intermittently with the speed percentage
• User configurable power lost recovery enabler
• Manual and assisted bed tramming
• Tramming Wizard for BL/3D/CRTouch versions
• Long filename support with scroll
• Axis value in dash board shows actual position of the axes, including Z leveling
• Baby Z-Stepping
• Firmware Retract
• Advanced pause feature
• Configurable park-head position (default x=240 y=220)
• Filament change support
• Filament management (load/unload/park head) in prepare menu
• Print Flow on Motion and Tune menu
• Home axis after motor disabling
• Fastest Z feed rate
• Live move for all motors but extruder
• Support for S-curve Acceleration
• Reboot printer item on control menu
• Increase extruder feed rate limit to 150 for BMG users
• Allows to invert direction of the extruder on Motion menu
• Support for BTT Smart filament sensor
• Selectable runout filament sensor active state (LOW/HIGH/MOTION)
• Editable runout distance
• Support for memory card extensions via Media Update (auto-mount) Enable/Disable menu item
• PID popup with temperature plot
• Lock screen
• Editable physical dimensions
• Mesh viewer, leveling progress and editor
• Custom pre-heat
• Enable/disable beeps sound
• View of g-code embedded thumbnail (use this guide)
• New print done screen with thumbnail support
• Two decimal positions for axis coordinates value
• New Z-Offset wizard
• New PID and MPC settings menus
• PID moves the head to the center for more accuracy
• Editable extrude minimum temperature
• Brightness settings on tune menu
• LCD brightness can dim after 5-minute timeout (configurable via M255)
• Turn off the backlight of the lcd in the tune menu
• New status line system, allows the scroll of large messages
• Home submenu with individual axis homing
• Enabled user setting for 250000/115200 baud (Creality Box compatibility)
• Head parking before recovery after power failure
• Offset icon changes to show leveling status
• Live end-stop diagnostic page
• Move bed to front after cancelling a print.
• Editable firmware retracts settings for Tune and filament settings menu
• Print Statistics page accessible from the Advanced Settings menu
• Toolbar with 5 configurable shortcuts actions.
• Support in source code of control menus for LED lights as the Neopixel
• Support up to 10 Preheat settings (needs own compile)
• Support for Linear Advance and Input Shaping in the Special Configuration repository
• TMC Trinamic driver current editor menu when it is supported (not for standalone)
• Menu item for enable/disable Adaptive Step Smoothing when it is supported
• Extrude 100 mm to Move menu for aid with extruder calibration

Manual mesh

• Assisted manual bed tramming
• Assisted manual mesh leveling menu
• Selectable mesh points from 2x2 to 9x9
• Mesh viewer
• Persistent Z-offset
• Move Z to 0 and disable motors option
• Mesh editor for fine tuning
• Allows to set the Z height after Z home

CR/3D/BLTouch

• Safe Probe Z-Homing
• Bed auto level
• High speed probe
• Retry bed level on error
• Mesh viewer
• Assisted tramming
• Selectable mesh points from 2x2 to 9x9
• Allows the user to cancel an auto leveling process
• Increase Max Probe Offset and Probing Margin to 60 mm
• M48 Probe Test to Probe Settings menu
• Probe Stow/Deploy in Probe Settings menu
• Option to disable HS mode for better compatibility with CRTouch
• Option to change the Z Probe feed rate
• Configurable Bed auto leveling temperature
• Mesh editor for fine tuning
• Automatic maximize leveling area
• Automatic center leveling area
• Editable multiple probing
• Leveling mesh creation progress view

G-Codes enhanced support

• Filament Load Unload G-codes (M701/M702)
• Support for M600 filament change
• Support for G-code M117 messages
• Enable M575 change baud rate by G-code
• Extended M75 with filename support, use M75 {{ event.name }} in g-code script
• Enable ARC and 'P' parameter to specify complete circles (G2/G3)
• M155 Geometry report
• Native support of marlin display brightness and time out (M255 and M256 g-codes)
• Support to M86-M87 Hotend Idle Timeout

Support for special nonstandard custom C G-Codes

• C10 marks a G-code file as a configuration file to avoid confirm to print and print done dialogs.
• C11 En Rn Gn Bn gcode for colorize UI elements
• C29 F### B### L### R### N# T#: Mesh insets, amount of grid points and bed temperature of the mesh leveling
• C35 Launch the bed tramming wizard.
• C100 X### Y###: to sets minimum limits
• C101 X### Y### z###: sets maximum limits
• C102 X### Y###: sets bed size
• C104 U1 T###: unlocks the hotend maximum temperature to ###°C (CAUTION)
• C108: Cancels screens waiting for user simple confirmation
• C115: Shows ProUI details
• C125 X### Y### z###: sets the park position
• C412 M#: sets run-out sensor active state (M0:LOW, M1:HIGH, M2:MOTION)
• C510: locks/unlocks the screen (C510 U1 to unlock)
• C562 E#: inverts the Extruder (E1 to invert)
• C810: sets up the toolbar shortcuts
• C851 S#### [Z###] Mn: sets probe Z feed rate (S) and set Multiple probing (Mn>1) or disables it (M0), in manual mesh version, Z parameter can be used to set a manual Z-offset.

Advanced settings menu

• Advanced mesh leveling editing features
• Probe offsets menu (BLTouch version)
• Customizable park-head position
• Customizable bed size and z heigh up to 999 x 999 x 999
• Launch PID for nozzle and bed with graphical feedback
• Filament run-out sensor with active state setup (LOW/HIGH)
• Filament load and unload lengths menu items in run-out menu
• Power-loss recovery enable/disable option
• LCD Brightness control
• Select Color Sub Menu
• Beep/Sound enable/disable option
• Selectable mesh point (BLTouch version)
• Media Update (auto-mount) for memory card extensions support
• Lock screen
• End-stop diagnostics

Special Octoprint / Host print support

• High speed (250000 baud) serial communication
• In screen control of host printing (M73, M75-M77)
• Display messages on status line (M117)
• Color change of UI elements for visual status report (C11)
• Binary file transfer for remote firmware upgrade
• List binary (.bin) files (M20) for flash firmware support with BFT
• Arc Welder Octoprint plugin support
• EEPROM Editor Octoprint plugin support
• Host action commands for filament runout
• Emergency Parser active
• Advanced OK

Octoprint bed visualizer support

Display enhancements

• Extended Display library
• Enhanced status messages
• MPC/PID auto tune progress on display with plot
• Leveling progress on display
• Boot screen for M997
• Transparent icons for better color theme adaptability (depends on display unit)
• LCD brightness can dim after 5-minute timeout (configurable via M255)
• New print g-code preview
• New print done screen

A lot of additions and fixes from Bugfix development branch

Aditional Special support can be enabled in custom builds

• Creality CV laser module support with automatic file type detection
• Creality Cloud Support
• Menu item for enable/disable file list sorting
• Several additional enableable menu items via #defines RUNOUT_TUNE_ITEM, PLR_TUNE_ITEM, JD_TUNE_ITEM, ADVK_TUNE_ITEM
• Linear Advance (LA) support
• Input Shaping (IS) support
• TMC Trinamic driver current editor

More info on the wiki pages

• How to install the firmware

• Octoprint settings

• How to make the Manual Mesh

• How to install a 3D/BLTouch

• How to apply a color theme

https://user-images.githubusercontent.com/2745567/143180943-f69f5967-34c1-421f-86a1-466ecccab97d.mp4

Precompiled firmware