BigTreeTech SKR Mini E3 V3.0
Latest 32-bit SKR Mini E3 with STM32G0B1RET6 @ 64MHz, 4 integrated TMC2209 UART drivers, USB-C, and CAN bus support. Compact Ender 3 drop-in upgrade. Marlin and Klipper compatible.
$25.99
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Specifications
Components
STMicroelectronics STM32G0B1RET6 32-bit ARM Cortex-M0+ microcontroller, 512KB flash, 144KB RAM, with CAN bus and USB Type-C
4x TRINAMIC TMC2209 stepper drivers integrated on PCB with UART mode, StealthChop2, and stallGuard for sensorless homing
MicroSD card slot for firmware flashing and standalone print file storage
Bus Interfaces
The BigTreeTech SKR Mini E3 V3.0 is the latest iteration of the popular SKR Mini E3 series and represents a significant hardware upgrade. It moves from the STM32F103 to the STM32G0B1RET6 ARM Cortex-M0+ processor with a larger 512KB flash and improved peripherals, while maintaining the same compact form factor as its predecessors for Ender 3 compatibility.
Key improvements in V3.0 include USB Type-C connectivity replacing Micro-B, native CAN bus support for future toolhead expansion, and improved EMI filtering. The board retains 4 integrated TMC2209 stepper drivers in UART mode with StealthChop2 and stallGuard. Dual Z-axis ports are carried over from V2.0.
The board accepts 12–24V DC input, includes a MicroSD slot, BLTouch/CR Touch header, filament runout sensor input, and display connectors. Full open-source hardware files are published on GitHub and both Marlin 2.x and Klipper firmware are supported with configuration examples available from the Marlin Configurations repository.
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