This repository contains the custom firmware for 3Drag 3D printer developed @ +LAB
This is a custom version of the Marlin Firmware specifically modified for 3Drag 3D printer used in LDM mode.
LDM (liquid Deposition Modeling) is a particular 3D printer process in which viscous fluid are extruded from a reservoir and deposited on the build plate. This process is known as Direct Ink Writing (DIW).
- The stardard filament extruder was changed with the custom 3Drag LDM extruder
- The 3Drag UV curing addon was mounted as a second extruder (the stepper driver is not needed since no movement will be done by the curing apparatus).
- DRV8825 stepper driver were used for all the axis.
- The main board was changed with a Megatronics 3.0 board. (This mod is not necessary, the main board was broken and it was replaved with an available one)
- E0 and E1 thermistors have been set to dummy (no heating required to extrude viscous fluids)
- The microsteps were set to 16 for X, Y, and Z axis and 8 for E0 axis.
- DEFAULT_AXIS_STEPS_PER_UNIT for E0 motor have been modified to 400 if using the 2:1 reduction gear box or 800 if using 4:1 reduction gear box. More information available here
- Check if the defined motherboard match with the one you are using. It was set as BOARD_MEGATRONICS_3 since Megatronics 3.0 main board was used.
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.
To build Marlin 2.0 you'll need Arduino IDE 1.8.8 or newer or PlatformIO. Detailed build and install instructions are posted at:
| Platform | MCU | Example Boards |
|---|---|---|
| Arduino AVR | ATmega | RAMPS, Melzi, RAMBo |
| Teensy++ 2.0 | AT90USB1286 | Printrboard |
| Arduino Due | SAM3X8E | RAMPS-FD, RADDS, RAMPS4DUE |
| 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 |
- Submit Bug Fixes as Pull Requests to the (bugfix-2.0.x) branch.
- Follow the Coding Standards to gain points with the maintainers.
- Please submit your questions and concerns to the Issue Queue.
For best results getting 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
- Tom's 3D Forums
- Facebook Group "Marlin Firmware for 3D Printers"
- Marlin Configuration on YouTube
The current Marlin dev team consists of:
- Scott Lahteine [@thinkyhead] - USA Donate
- Roxanne Neufeld [@Roxy-3D] - USA
- Chris Pepper [@p3p] - UK
- Bob Kuhn [@Bob-the-Kuhn] - USA
- Erik van der Zalm [@ErikZalm] - Netherlands
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.