Upgrade your Ender 3 class printer with a 32 bit control board engineered for smooth, quiet and precise motion. The BIGTREETECH SKR MINI E3 series is a drop-in replacement board that fits the original mounting points and wiring layout of the Ender 3 family, so you can move away from outdated 8 bit electronics without rebuilding your machine from scratch.

Built around a powerful STM32 microcontroller and paired with TMC2209 stepper drivers running in UART mode, this board delivers near silent operation, finer microstepping and better print quality on the same hardware. Firmware is community supported and widely documented, making it a favorite choice for hobbyists and makers who want modern features at an accessible price.

• Brand : BIGTREETECH (BIQU)
• Type : 32 bit 3D printer motherboard
• Master chip : STM32G0B1RET6
• Motor drivers : TMC2209 in UART mode
• Power input : DC 12V / 24V
• Board size : approximately 103.75 x 70.25 mm
• Compatible printers : Ender 3, Ender 3 Pro, Ender 5 and CR-10 series
• Version options : SKR MINI E3 V2.0, V3.0 and bundle options, selectable above

• ✓ Enjoy noticeably quieter printing thanks to TMC2209 drivers with UART control
• ✓ Gain finer resolution and smoother surfaces from a modern 32 bit processor
• ✓ Fits the original Ender 3 mounting holes and connectors for a straightforward swap
• ✓ Runs on both 12V and 24V systems, so it suits a wide range of setups
• ✓ Backed by a large community and regularly updated open firmware

Ideal for anyone upgrading a stock Ender 3, Ender 3 Pro, Ender 5 or CR-10 style printer. Whether you want quieter night time printing, finer detail on small models, or a more capable platform for future modifications, this board gives you the headroom to grow. It also suits makers building or refreshing a custom machine around a proven, well documented controller.

• 1 x BIGTREETECH SKR MINI E3 control board (version depending on your selection)
• Additional items included depend on the bundle option chosen above