Optimized acceleration and jerk settings reduce ghosting and ringing at high speeds.
After a firmware update, it is highly recommended to recalibrate your machine:
Updating the firmware on a Sunlu T3 (also known as the "Terminator") is a common procedure used to resolve issues like , enabling PID tuning , or adding advanced Marlin features . The Sunlu T3 uses a 32-bit controller board that is largely a clone of the BigTreeTech SKR Mini E3 V2 , which makes it highly compatible with standard Marlin firmware. Finding the Firmware
⚠️ : Updating firmware can temporarily disable your printer if done incorrectly. Always verify your mainboard version first. Sunlu T3 Firmware Update
Visit the official Sunlu download page or your chosen community GitHub repository.
A properly updated Sunlu T3, with the latest firmware and careful post-update calibration, is a reliable, high-speed workhorse capable of producing stunning prints. Whether you stay with the excellent stock Marlin firmware or eventually venture into the advanced world of Klipper, you'll be getting the most out of your machine.
Open-source repositories on GitHub offer pre-compiled Marlin configurations tailored specifically for the Sunlu T3. Step 3: Prepare the MicroSD Card Insert the MicroSD card into your computer. Right-click the drive and select Format . Choose FAT32 as the file system. Set the allocation unit size to 4096 bytes . Click Start . Step 4: Flash the Firmware Optimized acceleration and jerk settings reduce ghosting and
Go to the configuration menu and select or Initialize EEPROM . This clears out old configuration data that could conflict with the new firmware.
Windows, Mac, or Linux to download and transfer the files. Step-by-Step Sunlu T3 Firmware Flashing Guide
: You can find archived official source code and Marlin 2.0 bugfix branches for the T3 on GitHub . Step-by-Step Update Guide Finding the Firmware ⚠️ : Updating firmware can
To see your printer's current firmware version, you can send an M115 command to it. Using a USB connection and a program like Pronterface (often included on the printer's SD card) will return a string of information that includes the firmware name and compilation date. This data is very useful when confirming a successful update. For example, when checking a stock firmware, the printer might report details like: FIRMWARE_NAME:Marlin (Oct 9 2022 08:58:15) . This indicates that an older version of Marlin is currently installed.
Do use random Google Drive links. Official sources: