BigTreeTech SKR V1.4 Turbo
32-bit 3D printer control board with LPC1769 @ 120MHz. Supports 5 stepper driver sockets, dual Z, 12–24V, TMC2209 UART. Popular Marlin and Klipper compatible upgrade board.
$22.99
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Specifications
Components
NXP LPC1769 32-bit ARM Cortex-M3 microcontroller, 512KB flash, 64KB SRAM, running at 120MHz
TRINAMIC TMC2209 stepper driver socket with UART mode support, StealthChop2, and stallGuard — 5 sockets on this board
MicroSD card slot for firmware flashing and standalone print file access
Bus Interfaces
The BigTreeTech SKR V1.4 Turbo is a 32-bit 3D printer control board based on the NXP LPC1769 ARM Cortex-M3 processor running at 120MHz (Turbo version). It is one of the most popular upgrade boards for Ender 3, Ender 5, and similar Creality printers, offering dramatic improvements over stock 8-bit boards.
The board features 5 stepper driver sockets supporting TMC2209, TMC2208, TMC2130, DRV8825, and A4988 drivers in SPI and UART modes. Dual Z-axis ports allow independent Z control. It supports 12–24V DC input and includes a 15A heated bed output with protection circuitry.
Expansion options include USB Type-C for PC connection, MicroSD for file storage, UART/SPI/I2C headers, and EXP1/EXP2 display connectors compatible with 12864 and TFT displays. On-board EEPROM stores firmware settings. Full schematics and PCB layouts are published on GitHub, and the board supports Marlin 2.x and Klipper firmware.
Use Cases
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