BIGTREETECH SKR Mini E3 V3 Motherboard TMC2209 UART 3D Printer

BIGTREETECH SKR Mini E3 V3.0 Motherboard with TMC2209 UART

Upgrade your 3D printer with the BIGTREETECH SKR Mini E3 V3.0 Motherboard — a high-performance, compact control board built around the powerful ARM Cortex-M0+ STM32G0B1RET6 MCU. Featuring onboard TMC2209 UART stepper drivers, a redesigned heat sink, and active cooling fan support, this board delivers smooth, quiet, and reliable 3D printing performance for Ender 3 and compatible printers.

Key Features

• Next-Gen MCU: ARM Cortex-M0+ STM32G0B1RET6 (G0 series) for faster processing and improved stability
• Onboard TMC2209 UART Drivers: Ultra-quiet stepper motor control with UART communication for easy tuning
• Upgraded Heat Sink Design: Increased heat dissipation area for significantly better thermal management
• Active Cooling Fan Support: Built-in fan control to keep the board running at optimal temperatures
• Thermistor Protection Circuit: Guards against chip overheating for added durability and reliability
• Wide Display Compatibility: Supports 2.4" TFT, 3.5" TFT, and the Ender 3 original LCD 12864 screen
• USB Micro-B Connectivity: Easy plug-and-unplug USB connection at 115200 baud rate
• 4-Layer PCB Construction: Enhanced signal integrity and build quality
• G-code Support: Compatible with Simplify3D, Repetier-Host, Makerware, and more
• Compact Form Factor: Approx. 103.75 × 70.25 mm — fits neatly in standard Ender 3 enclosures

Specifications

What's in the Box

• 1 × BIGTREETECH SKR Mini E3 V3.0 Motherboard (complete set)

Ships from CN.

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Frequently Asked Questions

Q: What 3D printers is the BIGTREETECH SKR Mini E3 V3.0 compatible with?

A: The SKR Mini E3 V3.0 is designed as a drop-in upgrade for Creality Ender 3, Ender 3 Pro, Ender 3 V2, and other printers sharing a similar form factor. It supports the Ender 3 original LCD 12864 screen as well as 2.4" and 3.5" TFT displays, making it a versatile upgrade option for a wide range of compatible machines.

Q: What is UART mode and why does it matter for TMC2209 drivers?

A: UART (Universal Asynchronous Receiver-Transmitter) mode allows direct communication between the motherboard and the TMC2209 stepper drivers. This enables real-time configuration of motor current, microstepping, and other settings directly through your printer's firmware — without needing to adjust physical jumpers. The result is quieter operation, more precise movement, and easier tuning compared to standalone driver modes.

Q: What firmware does the SKR Mini E3 V3.0 support?

A: The SKR Mini E3 V3.0 is compatible with Marlin firmware (the most widely used 3D printer firmware), as well as Klipper. BIGTREETECH provides official firmware configurations and documentation to help you get started quickly. Recommended slicing and host software includes Simplify3D, Repetier-Host, and Makerware, all of which support standard G-code file formats.

Q: Does this board include stepper drivers, or do I need to purchase them separately?

A: The TMC2209 stepper drivers are onboard — they are soldered directly to the SKR Mini E3 V3.0 PCB. You do not need to purchase or install separate driver modules. This integrated design also ensures optimal electrical connection and heat dissipation for the drivers.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.