Anycubic Mega S: Difference between revisions
From Leo's Notes
This page was last edited on 19 September 2020, at 20:57.
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*Filament sensor needs to be closed or else it shows an error on the display when the machine is powered on. The special menu to disable the filament sensor is [https://github.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/blob/b04997f0456657654277ab6a7431399d5d438194/Marlin/src/lcd/anycubic_touchscreen.cpp only temporary and reverts on a reset]. You will need to undefine the <code>ANYCUBIC_FILAMENT_RUNOUT_SENSOR</code> in Configuration.h to disable this completely. The screen nags you of the filament because this firmware will send J15 to it on startup to the display if <code>FILAMENT_RUNOUT_PIN</code> is high. | *Filament sensor needs to be closed or else it shows an error on the display when the machine is powered on. The special menu to disable the filament sensor is [https://github.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/blob/b04997f0456657654277ab6a7431399d5d438194/Marlin/src/lcd/anycubic_touchscreen.cpp only temporary and reverts on a reset]. You will need to undefine the <code>ANYCUBIC_FILAMENT_RUNOUT_SENSOR</code> in Configuration.h to disable this completely. The screen nags you of the filament because this firmware will send J15 to it on startup to the display if <code>FILAMENT_RUNOUT_PIN</code> is high. | ||
*Since Knutwurst made it easy to configure for a specific device with configuration flags (eg. <code>KNUTWURST_MEGA_S</code>, <code>KNUTWURST_TMC</code>), recompiling for a specific model is very convenient. Review the first 100 lines of Configuration.h and uncomment whatever applies. You may want to uncomment line 287 so that <code>#define MOTHERBOARD BOARD_TRIGORILLA_14</code> is defined. | *Since Knutwurst made it easy to configure for a specific device with configuration flags (eg. <code>KNUTWURST_MEGA_S</code>, <code>KNUTWURST_TMC</code>), recompiling for a specific model is very convenient. Review the first 100 lines of Configuration.h and uncomment whatever applies. You may want to uncomment line 287 so that <code>#define MOTHERBOARD BOARD_TRIGORILLA_14</code> is defined. | ||
*Bed size is changed from 210x210 to [https://github.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/blob/7ccaa6fa53af68ff9c752e5cf36914c55f38c3a4/Marlin/Configuration.h#L1495 225x220] (width, depth). | *Bed size is changed from 210x210 to [https://github.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/blob/7ccaa6fa53af68ff9c752e5cf36914c55f38c3a4/Marlin/Configuration.h#L1495 225x220] (width, depth). I reverted this back to 210x210 because the nozzle will crash to the clips on the right side of the bed. | ||
Compiling the firmware can be done by cloning the repository, opening the Marlin/Marlin.ino file in Arduino IDE, and compiling it for the ATmega2560. Get the compiled binary by going to Sketch -> Export compiled binary. The binary will be located in the same location as the Marlin.ino file. Upload the .hex file that does not contain the bootloader via OctoPrint to update the firmware. | Compiling the firmware can be done by cloning the repository, opening the Marlin/Marlin.ino file in Arduino IDE, and compiling it for the ATmega2560. Get the compiled binary by going to Sketch -> Export compiled binary. The binary will be located in the same location as the Marlin.ino file. Upload the .hex file that does not contain the bootloader via OctoPrint to update the firmware. | ||
Revision as of 20:57, 19 September 2020
The Anycubic Mega S is a cheap 3D printer. I bought this printer for about $280 CAD with shipping.
Configuration
Serial talks at 250,000 baud.
The print area is 210x210x205 (width, depth, height).
Anycubic suggests that the following slicer settings:
- bottom layer speed not exceed 20mm/s
- top/bottom speed 30mm/s
- outer shell speed 30mm/s
- retraction speed at 60mm/s at 6mm or for flexible filament at 91mm/s at 6.4mm
Firmware
For an updated firmware, see:
The stock firmware can be found on Anycubic's website, near the bottom of the page.
Use the OctoPrint Firmware Updater plugin. Configure it by setting:
- Flash method: avrdude
- AVR MCU: ATmega2560
- Path to avrdude: /usr/bin/avrdude
- AVR Programmer Type: wiring
- Baud Rate: auto
Note that the TFT display will look identical. This is because the display is driven by a separate STM32F103 microcontroller and only interacts with the printer via serial. More information on the displays at https://github.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/wiki/Types-of-Anycubic-Touchscreens
Knutwurst's firmware issues and some notes:
- Still has startup / connection sounds. Disable by editing Marlin/Configuration.h and ensure STARTUP_CHIME is not defined.
- Filament sensor needs to be closed or else it shows an error on the display when the machine is powered on. The special menu to disable the filament sensor is only temporary and reverts on a reset. You will need to undefine the
ANYCUBIC_FILAMENT_RUNOUT_SENSORin Configuration.h to disable this completely. The screen nags you of the filament because this firmware will send J15 to it on startup to the display ifFILAMENT_RUNOUT_PINis high. - Since Knutwurst made it easy to configure for a specific device with configuration flags (eg.
KNUTWURST_MEGA_S,KNUTWURST_TMC), recompiling for a specific model is very convenient. Review the first 100 lines of Configuration.h and uncomment whatever applies. You may want to uncomment line 287 so that#define MOTHERBOARD BOARD_TRIGORILLA_14is defined. - Bed size is changed from 210x210 to 225x220 (width, depth). I reverted this back to 210x210 because the nozzle will crash to the clips on the right side of the bed.
Compiling the firmware can be done by cloning the repository, opening the Marlin/Marlin.ino file in Arduino IDE, and compiling it for the ATmega2560. Get the compiled binary by going to Sketch -> Export compiled binary. The binary will be located in the same location as the Marlin.ino file. Upload the .hex file that does not contain the bootloader via OctoPrint to update the firmware.
Mods
- Filament Holder - https://www.thingiverse.com/thing:2841440
- TMC2208 V2 driver. I bought 5 TMC2208 V2 modules. Follow the guide at: https://github.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/wiki/Swap-stepper-motor-driver-for-TMC2xxx
- Y Belt Tensioner - https://www.thingiverse.com/thing:2789837
- Motor driver duct - https://www.thingiverse.com/thing:3796022
See Also
- https://www.thingiverse.com/thing:2901190 - Goes over mods for the Anycubic i3 Mega. Some of the slicer settings may be of interest.