d-marquina / marlin-ramps-x9

Marlin's fork centered on controlling more than 6 steppers with an Arduino Mega and RAMPS 1.4.

Marlin 3D Printer Firmware

Additional documentation can be found at the Marlin Home Page. Please test this firmware and let us know if it misbehaves in any way. Volunteers are standing by!

Marlin RAMPS x9

This fork lets you control 9 steppers with a single Arduino Mega and RAMPS 1.4 using the recently added 9 axis support for Marlin in bugfix 2.1.

Only DRV8825 drivers tested.

A new board has been added, "BOARD_RAMPS_14_x9", its pinout is:

Description	Pin	Location	Description	Pin	Location
X Motor/Axis			X Endstop
X_STEP_PIN	54	X Socket	X_MIN_PIN	3	Endstops
X_DIR_PIN	55	X Socket	X_MAX_PIN	63	Aux2
X_ENABLE_PIN	38	X Socket
Y motor/Axis			Y Endstop
Y_STEP_PIN	60	Y Socket	Y_MIN_PIN	14	Endstops
Y_DIR_PIN	61	Y Socket	Y_MAX_PIN	40	Aux2
Y_ENABLE_PIN	56	Y Socket
Z motor/Axis			Z Endstop
Z_STEP_PIN	46	Z Socket	Z_MIN_PIN	18	Endstops
Z_DIR_PIN	48	Z Socket	Z_MAX_PIN	19	Endstops
Z_ENABLE_PIN	62	Z Socket
A motor/I Axis			I Endstop
I_STEP_PIN	26	E0 Socket	I_MIN_PIN	2	Endstops
I_DIR_PIN	28	E0 Socket	I_MAX_PIN	42	Aux2
I_ENABLE_PIN	24	E0 Socket
B motor/J Axis			J Endstop
J_STEP_PIN	36	E1 Socket	J_MIN_PIN	15	Endstops
J_DIR_PIN	34	E1 Socket	J_MAX_PIN	65	Aux2
J_ENABLE_PIN	30	E1 Socket
C motor/K Axis			K Endstop
K_STEP_PIN	41	Aux4	K_MIN_PIN	59	Aux2
K_DIR_PIN	39	Aux4	K_MAX_PIN	64	Aux2
K_ENABLE_PIN	37	Aux4
U motor/Axis			U Endstop
U_STEP_PIN	35	Aux4	U_MIN_PIN	44	Aux2
U_DIR_PIN	33	Aux4	U_MAX_PIN	66	Aux2
U_ENABLE_PIN	31	Aux4
V motor/Axis			V Endstop
V_STEP_PIN	29	Aux4	V_MIN_PIN	32	Aux4
V_DIR_PIN	27	Aux4	V_MAX_PIN	47	Aux4
V_ENABLE_PIN	25	Aux4
W motor/Axis			W Endstop
W_STEP_PIN	23	Aux4	W_MIN_PIN	45	Aux4
W_DIR_PIN	17	Aux4	W_MAX_PIN	43	Aux4
W_ENABLE_PIN	16	Aux4

Changes made in Configuration.h:

• X_DRIVER_TYPE (line 170)
• AXIS4_ROTATES (line 210)
• DEFAULT_AXIS_STEPS_PER_UNIT (800 steps/unit, 1/4 microstepping, line 1016)
• DEFAULT_MAX_FEEDRATE (10 unit/s, 600 RPM, line 1026)
• DEFAULT_MAX_ACCELERATION (5 unit/s^2, line 1036)
• USE_XMIN_PLUG (line 880)
• X_ENABLE_ON (line 1400)
• INVERT_X_DIR (line 1439)
• X_HOME_DIR (line 1480)
• X_MAX_POS X_MIN_POS (line 1497)
• HOMING_FEEDRATE_MM_M (line 1884)

Changes made in Configuration_adv.h:

• HOMING_BUMP_MM (line 837)
• HOMING_BUMP_DIVISOR (line 838)
• AXIS_RELATIVE_MODE (line 1014)

Besides, some adjustments were needed in:

• /src/modules/probe.h: 9 arguments in NUM_AXIS_ARRAY
• /src/core/types.h: Rename operators with "v" argument to "vi"

Marlin 2.0 Bugfix Branch

Not for production use. Use with caution!

Marlin 2.0 takes this popular RepRap firmware to the next level by adding support for much faster 32-bit and ARM-based boards while improving support for 8-bit AVR boards. Read about Marlin's decision to use a "Hardware Abstraction Layer" below.

This branch is for patches to the latest 2.0.x release version. Periodically this branch will form the basis for the next minor 2.0.x release.

Download earlier versions of Marlin on the Releases page.

Example Configurations

Before building Marlin you'll need to configure it for your specific hardware. Your vendor should have already provided source code with configurations for the installed firmware, but if you ever decide to upgrade you'll need updated configuration files. Marlin users have contributed dozens of tested example configurations to get you started. Visit the MarlinFirmware/Configurations repository to find the right configuration for your hardware.

Building Marlin 2.0

To build Marlin 2.0 you'll need Arduino IDE 1.8.8 or newer or PlatformIO. We've posted detailed instructions on Building Marlin with Arduino and Building Marlin with PlatformIO for ReArm (which applies well to other 32-bit boards).

Hardware Abstraction Layer (HAL)

Marlin 2.0 introduces a layer of abstraction so that all the existing high-level code can be built for 32-bit platforms while still retaining full 8-bit AVR compatibility. Retaining AVR compatibility and a single code-base is important to us, because we want to make sure that features and patches get as much testing and attention as possible, and that all platforms always benefit from the latest improvements.

Supported Platforms

Platform	MCU	Example Boards
Arduino AVR	ATmega	RAMPS, Melzi, RAMBo
Teensy++ 2.0	AT90USB1286	Printrboard
Arduino Due	SAM3X8E	RAMPS-FD, RADDS, RAMPS4DUE
ESP32	ESP32	FYSETC E4, E4d@BOX, MRR
LPC1768	ARM® Cortex-M3	MKS SBASE, Re-ARM, Selena Compact
LPC1769	ARM® Cortex-M3	Smoothieboard, Azteeg X5 mini, TH3D EZBoard
STM32F103	ARM® Cortex-M3	Malyan M200, GTM32 Pro, MKS Robin, BTT SKR Mini
STM32F401	ARM® Cortex-M4	ARMED, Rumba32, SKR Pro, Lerdge, FYSETC S6
STM32F7x6	ARM® Cortex-M7	The Borg, RemRam V1
SAMD51P20A	ARM® Cortex-M4	Adafruit Grand Central M4
Teensy 3.5	ARM® Cortex-M4
Teensy 3.6	ARM® Cortex-M4
Teensy 4.0	ARM® Cortex-M7
Teensy 4.1	ARM® Cortex-M7
Linux Native	x86/ARM/etc.	Raspberry Pi

Submitting Patches

Proposed patches should be submitted as a Pull Request against the (bugfix-2.1.x) branch.

• This branch is for fixing bugs and integrating any new features for the duration of the Marlin 2.0.x life-cycle.
• Follow the Coding Standards to gain points with the maintainers.
• Please submit Feature Requests and Bug Reports to the Issue Queue. Support resources are also listed there.
• Whenever you add new features, be sure to add tests to buildroot/tests and then run your tests locally, if possible.
  • It's optional: Running all the tests on Windows might take a long time, and they will run anyway on GitHub.
  • If you're running the tests on Linux (or on WSL with the code on a Linux volume) the speed is much faster.
  • You can use make tests-all-local or make tests-single-local TEST_TARGET=....
  • If you prefer Docker you can use make tests-all-local-docker or make tests-all-local-docker TEST_TARGET=....

Marlin Support

The Issue Queue is reserved for Bug Reports and Feature Requests. To get help with configuration and troubleshooting, please use the following resources:

• Marlin Documentation - Official Marlin documentation
• Marlin Discord - Discuss issues with Marlin users and developers
• Facebook Group "Marlin Firmware"
• RepRap.org Marlin Forum
• Facebook Group "Marlin Firmware for 3D Printers"
• Marlin Configuration on YouTube

Contributors

Marlin is constantly improving thanks to a huge number of contributors from all over the world bringing their specialties and talents. Huge thanks are due to all the contributors who regularly patch up bugs, help direct traffic, and basically keep Marlin from falling apart. Marlin's continued existence would not be possible without them.

Administration

Regular users can open and close their own issues, but only the administrators can do project-related things like add labels, merge changes, set milestones, and kick trolls. The current Marlin admin team consists of:

• Scott Lahteine [@thinkyhead] - USA - Project Maintainer   💸 Donate
• Roxanne Neufeld [@Roxy-3D] - USA
• Keith Bennett [@thisiskeithb] - USA   💸 Donate
• Peter Ellens [@ellensp] - New Zealand
• Victor Oliveira [@rhapsodyv] - Brazil
• Chris Pepper [@p3p] - UK
• Jason Smith [@sjasonsmith] - USA
• Luu Lac [@shitcreek] - USA
• Bob Kuhn [@Bob-the-Kuhn] - USA
• Erik van der Zalm [@ErikZalm] - Netherlands   💸 Donate

License

Marlin is published under the GPL 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.

While we can't prevent the use of this code in products (3D printers, CNC, etc.) that are closed source or crippled by a patent, we would prefer that you choose another firmware or, better yet, make your own.