Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. | Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.
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 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.
Download earlier versions of Marlin on the Releases page.
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.
|Arduino AVR||ATmega||RAMPS, Melzi, RAMBo|
|Arduino Due||SAM3X8E||RAMPS-FD, RADDS, RAMPS4DUE|
|ESP32||ESP32||FYSETC E4, [email protected], 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|
The Issue Queue is reserved for Bug Reports and Feature Requests. To get help with configuration and troubleshooting, please use the following resources:
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.
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:
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.