Marlin 1.1.9 (Ai3M based) for Anycubic 4Max Pro

This is a custom version of the Marlin Firmware for the 4Max Pro based on davidramiro's Ai3M repo and alfrank's changes for the Anycubic 4Max Pro. The DWIN TFT screen is based on derhopp's repo with his remarkable efforts to get this working with the latest versions of Marlin.

Make sure to take a look at the Wiki in davidramiro's Ai3M repo and also the FAQ.

Why should use this firmware?

Anycubic's touchscreen implementation is very hacked together and is based on the old Marlin beta version 1.1.0-RC8. In addition, the wrong thermistor for the hotend is entered in the stock firmware, which has been fixed in this version. Also if your hotbed is concave or not straight you can use the mesh bed leveling.

How to use?

Warning: If your 4Max Pro works satisfactorily for you there is no reason to do a firmware update.

• There is always a way back to the original firmware. Before the update, please note the currently installed version: Menu Tools / About / Firmware Version on the display of the printer.
• If you don't want to change the firmware yourself, you can simply use Cura to load the latest .hex file from the release.
• If you want to go back to the Original Anycubic 1.1.7 (Marlin 1.1.0-RC8) firmware download it from here
• After flashing the firmware, no matter which way, you have to reset and save the EEPROM values using a terminal program (e.g. Pronterface).
  • connect the printer to the computer via USB cable
  • open the terminal program, select the appropriate USB serial interface (on Mac: SLAB_USBtoUART)
  • change baud rate or Baudrate to 250000 bps
  • connect and wait for the EEPROM values to be output
  • then enter the following: M502 and M500
• Now you can disconnect again, for safety's turn the printer off and on again.
• The new firmware is shown in the printer display (see above) as V116.

Info: The original Anycubic firmware is set to a baud rate of 115200 bps.

Known bugs

Marlin-A4MaxPro

• LED control: It would be better to enable case lights menu option with PWM conrol
• light flickers when printing
• PID from the hotend no longer fits => Can be fixed by PID tuning

Marlin-Ai3M

• Power outage support is not included
• Estimated print times from your slicer might be slightly off.
• Special characters on any file or folders name on the SD card will cause the file menu to freeze. Simply replace or remove every special character (Chinese, Arabic, Russian, accents, German & Scandinavian umlauts, ...) from the name. Symbols like dashes or underscores are no problem. Important note: On the SD card that comes with the printer there is a folder with Chinese characters in it by default. Please rename or remove it.

Credits

Marlin-Ai3M administrator:

• David Ramiro [@davidramiro]

Marlin-A4MaxPro contributors:

• [@alfrank]
• [@mpk]
• Jonas Plamann [@Poket-Jony]

Marlin's administrators:

• Scott Lahteine [@thinkyhead]
• Roxanne Neufeld [@Roxy-3D]
• Bob Kuhn [@Bob-the-Kuhn]
• Erik van der Zalm [@ErikZalm]

Notable contributors include:

• Alexey Shvetsov [@alexxy]
• Andreas Hardtung [@AnHardt]
• Ben Lye [@benlye]
• Bernhard Kubicek [@bkubicek]
• Bob Cousins [@bobc]
• Petr Zahradnik [@clexpert]
• Jochen Groppe [@CONSULitAS]
• David Braam [@daid]
• Eduardo José Tagle [@ejtagle]
• Ernesto Martinez [@emartinez167]
• Edward Patel [@epatel]
• F. Malpartida [@fmalpartida]
• João Brazio [@jbrazio]
• Kai [@Kaibob2]
• Luc Van Daele [@LVD-AC]
• Alberto Cotronei [@MagoKimbra]
• Marcio Teixeira [@marcio-ao]
• Chris Palmer [@nophead]
• Chris Pepper [@p3p]
• Steeve Spaggi [@studiodyne]
• Thomas Moore [@tcm0116]
• Teemu Mäntykallio [@teemuatlut]
• Nico Tonnhofer [@Wurstnase]
• [@android444]
• [@bgort]
• [@GMagician]
• [@Grogyan]
• [@maverikou]
• [@oysteinkrog]
• [@paclema]
• [@paulusjacobus]
• [@psavva]
• [@Tannoo]
• [@teemuatlut]
• ...and many others

License

Marlin is published under the GPLv3 license because we believe in open development. The GPL comes with both rights and obligations. Whether you use Marlin firmware as the driver for your open or closed-source product, you must keep Marlin open, and you must provide your compatible Marlin source code to end users upon request. The most straightforward way to comply with the Marlin license is to make a fork of Marlin on Github, perform your modifications, and direct users to your modified fork.

Disclaimer

/*
* Flashing a custom firmware happens at your own risk.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
* AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/