The Sunlu T3 features automatic bed leveling. Factory firmware utilizes a standard 3x3 grid, which often misses subtle warps in the spring steel bed. Upgraded firmware allows for a 5x5 or 7x7 grid, creating a highly accurate mesh that guarantees a perfect first layer across the entire surface. 4. Thermal Runway Safety and PID Tuning
Run a new retraction test. Enhanced firmware processing often allows you to lower retraction distance, reducing the physical strain on your extruder.
You gain . You lose nothing but ten minutes of your time and the frustration of failed prints. For the cost of a microSD card and a quick download, you transform your T3 from a "starter printer" into a reliable production machine.
Expert users who want to compile their own latest "bugfix" version. How to Update Your Sunlu T3 sunlu t3 firmware update better
Factory limitations prevent the print head from safely reaching its maximum advertised acceleration rates. Key Benefits of Upgrading Your Firmware
: Custom firmware can upgrade the Auto Bed Leveling (ABL) mesh from a standard 4x4 to a more detailed , improving first-layer consistency. Known Issues & What to Disable
The online forums suggest a resounding "Yes." Users on the LesImprimantes3D forum reported that after updating to V3.43, the "Bottom printing effect" was visibly improved, and the machine felt more responsive. One user noted that while they lost the French language option, the improvement in print reliability was worth the trade-off. The Sunlu T3 features automatic bed leveling
Updating the firmware on your Sunlu T3 is surprisingly simple, even for beginners. Here’s how to do it:
Stock Sunlu T3 firmware uses an older version of Marlin with basic jerk and acceleration control. Updated firmware unlocks (or Pressure Advance).
Optimizes the M600 command for smoother mid-print color swaps. Firmware Options: Marlin vs. Klipper You gain
Updating the firmware often means moving to a more modern interface. Whether you are using a refreshed Marlin UI or a web interface like Mainsail/Fluidd (for Klipper users), the benefits are immediate:
Sunlu provides a firmware update tool, or you might use a third-party tool compatible with your printer. For this guide, let's assume you're using a tool like "Firmware Update Tool" or "Arduino IDE" with the appropriate driver for your printer.
Stock settings often struggle with high-speed printing, leading to under-extrusion or poor quality. A firmware update optimizes the acceleration and jerk settings, allowing for cleaner, faster prints.