{"product_id":"bigtreetech-skr-mini-e3-v3-motherboard-tmc2209-uart-3d-printer","title":"BIGTREETECH SKR Mini E3 V3 Motherboard TMC2209 UART 3D Printer","description":"\u003ch2\u003eBIGTREETECH SKR Mini E3 V3.0 Motherboard with TMC2209 UART\u003c\/h2\u003e\n\u003cp\u003eUpgrade your 3D printer with the \u003cstrong\u003eBIGTREETECH SKR Mini E3 V3.0 Motherboard\u003c\/strong\u003e — a high-performance, compact control board built around the powerful \u003cstrong\u003eARM Cortex-M0+ STM32G0B1RET6 MCU\u003c\/strong\u003e. Featuring onboard \u003cstrong\u003eTMC2209 UART stepper drivers\u003c\/strong\u003e, 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.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNext-Gen MCU:\u003c\/strong\u003e ARM Cortex-M0+ STM32G0B1RET6 (G0 series) for faster processing and improved stability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard TMC2209 UART Drivers:\u003c\/strong\u003e Ultra-quiet stepper motor control with UART communication for easy tuning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUpgraded Heat Sink Design:\u003c\/strong\u003e Increased heat dissipation area for significantly better thermal management\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActive Cooling Fan Support:\u003c\/strong\u003e Built-in fan control to keep the board running at optimal temperatures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermistor Protection Circuit:\u003c\/strong\u003e Guards against chip overheating for added durability and reliability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Display Compatibility:\u003c\/strong\u003e Supports 2.4\" TFT, 3.5\" TFT, and the Ender 3 original LCD 12864 screen\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Micro-B Connectivity:\u003c\/strong\u003e Easy plug-and-unplug USB connection at 115200 baud rate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-Layer PCB Construction:\u003c\/strong\u003e Enhanced signal integrity and build quality\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eG-code Support:\u003c\/strong\u003e Compatible with Simplify3D, Repetier-Host, Makerware, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Approx. 103.75 × 70.25 mm — fits neatly in standard Ender 3 enclosures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 103.75 × 70.25 mm (4.08 × 2.77 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Layers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 Layers\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMCU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eARM Cortex-M0+ STM32G0B1RET6\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 12V \/ 24V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLogic Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Driver\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOnboard TMC2209 in UART mode\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Sensor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100K NTC thermistor channels\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.4\" TFT, 3.5\" TFT, Ender 3 LCD 12864\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMicro-B, 115200 baud\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFile Format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eG-code\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Software\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSimplify3D, Repetier-Host, Makerware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × BIGTREETECH SKR Mini E3 V3.0 Motherboard (complete set)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eShips from CN.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLooking for more DIY electronics and maker accessories? Explore our store for a wide range of components and crafting supplies.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: What 3D printers is the BIGTREETECH SKR Mini E3 V3.0 compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is UART mode and why does it matter for TMC2209 drivers?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What firmware does the SKR Mini E3 V3.0 support?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this board include stepper drivers, or do I need to purchase them separately?\u003c\/h4\u003e\n\u003cp\u003eA: The TMC2209 stepper drivers are \u003cstrong\u003eonboard\u003c\/strong\u003e — 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.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo 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.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What 3D printers is the BIGTREETECH SKR Mini E3 V3.0 compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"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. 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