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Reprap FW with look ahead. SDcard and LCD support. Pre-configured to work with Folgertech Prusa i3
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FolgerTech people - READ THIS

Changes you must make to the RAMPS board and Host

This firmware corrects some problems with the Folgertech firmware, namely X-axis issues. Please move your X-endstop plug one set of pins over to position 6, and change the X-Endstop settings in your host to MAX.

Marlin 3D Printer Firmware

Documentation has moved to

Custom Folgertech Prusa i3 Release

This project was forked off the lastest release branch of the real Marlin project. All necessary changes have been made to the configuration files.

Release Branch

The Release branch contains the latest tagged version of Marlin (currently 1.0.2 – January 2015). It also includes a version 1.0.1 (December 2014). Any version of Marlin before 1.0.1 (when we started tagging versions) can be collectively referred to as Marlin 1.0.0.

For the most up-to-date Marlin code, please go to the Development branchNot for production use – use with caution! When reporting any issues, please check to see if they are resolved in the Development branch first. But let us know if issues exist in tagged releases so we may document and patch them.

Current Status: In Development

Marlin development is being accelerated to catch up with a long list of issues. Check the Issues and Pull Requests links on the right to to see what we are currently working on.

Coverity Scan Build Status Travis Build Status Wiki Page


Google Hangout: . Hangout We have a hangout every 2 weeks. Search the issue list for "Hangout" and you will see what time and date the next event is going on.


The current Marlin dev team consists of:

  • Scott Lahteine [@thinkyhead] - English
  • Andreas Hardtung [@AnHardt] - Deutsch, English
  • [@Wurstnase] - Deutsch, English
  • [@fmalpartida] - English, Spanish
  • [@CONSULitAS] - Deutsch, English
  • [@maverikou]
  • Chris Palmer [@nophead]
  • [@paclema]
  • [@epatel]
  • Erik van der Zalm [@ErikZalm]
  • David Braam [@daid]
  • Bernhard Kubicek [@bkubicek]

More features have been added by:

  • Lampmaker,
  • Bradley Feldman,
  • and others...


Marlin is published under the GPL license because We believe in open development. Do not use this code in products (3D printers, CNC etc) that are closed source or are crippled by a patent.

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