BigTreeTech SKR Mini E3 V2.0
Improved 32-bit control board with 4 integrated TMC2209 UART drivers, dual Z ports, and STM32F103RCT6 @ 72MHz. Drop-in upgrade for Ender 3, CR-10S, Ender 5. Marlin and Klipper ready.
$27.99
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Specifications
Components
STMicroelectronics STM32F103RCT6 32-bit ARM Cortex-M3 microcontroller, 256KB flash, 48KB RAM, running at 72MHz
4x TRINAMIC TMC2209 stepper drivers integrated on PCB with UART mode, StealthChop2, SpreadCycle, and stallGuard for sensorless homing
MicroSD card slot for firmware flashing and standalone print file storage
Bus Interfaces
The BigTreeTech SKR Mini E3 V2.0 is an enhanced revision of the popular SKR Mini E3 series, designed as a compact drop-in replacement for Ender 3 and compatible Creality printers. It retains the STM32F103RCT6 ARM Cortex-M3 processor at 72MHz with 4 integrated TMC2209 stepper drivers, while adding key hardware improvements based on community feedback.
Version 2.0 adds dual Z-axis interface ports for independent dual-Z setups, expanding printer compatibility to include CR-10S, CR-10 S4, CR-10 S5, Ender 5, Ender 5 Pro, and Ender 5 Plus. The integrated TMC2209 UART drivers provide ultra-quiet StealthChop2 operation and stallGuard sensorless homing without requiring separate driver modules.
The board supports 12–24V DC input, USB Micro-B for host connectivity, a MicroSD slot for file access, and standard display expansion headers. Full open-source hardware files including schematics and PCB layouts are available on GitHub. Both Marlin 2.x and Klipper firmware configurations are supported and pre-configured examples are available from the Marlin Configurations repository.
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