# 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.

## Quick Facts

- **Brand:** BigTreeTech
- **Board Type:** 3D Printer Control Board
- **Price:** ~$22.99
- **Product Readiness:** consumer
- **CPU:** LPC1769
- **CPU Architecture:** ARM Cortex-M3
- **CPU Cores:** 1
- **RAM:** 64KB
- **Flash:** 512KB
- **USB:** USB Type-C
- **Power:** 12-24V DC
- **Operating Voltage:** 3.3V
- **SD Card:** MicroSD

## Open Source

- **Firmware:** Yes
- **Schematics:** Yes
- **PCB Layout:** Yes

## Compatible Firmware

Marlin, Klipper

## Use Cases

- 3D Printing
- CNC
- Laser Engraving

## Components

- **LPC1769** (MCU): NXP LPC1769 32-bit ARM Cortex-M3 microcontroller, 512KB flash, 64KB SRAM, running at 120MHz — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.nxp.com%2Fdocs%2Fen%2Fdata-sheet%2FLPC1769_68_67_66_65_64_63.pdf&ref=openhardware.directory&product=bigtreetech-skr-v1-4-turbo&source=md-export)
- **TMC2209** (Stepper Driver Socket): TRINAMIC TMC2209 stepper driver socket with UART mode support, StealthChop2, and stallGuard — 5 sockets on this board — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.trinamic.com%2Ffileadmin%2Fassets%2FProducts%2FICs_Documents%2FTMC2209_Datasheet_V103.pdf&ref=openhardware.directory&product=bigtreetech-skr-v1-4-turbo&source=md-export)
- **MicroSD slot** (Storage): MicroSD card slot for firmware flashing and standalone print file access — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-skr-v1-4-skr-v1-4-turbo-control-board-tmc2209-tmc2208-eeprom-v1-0-exp-mot-v1-0-3d-printer-parts-for-ender-3&ref=openhardware.directory&product=bigtreetech-skr-v1-4-turbo&source=md-export)

## Protocols

- **UART**
- **SPI**
- **I2C**
- **USB**

## Description

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.

## Where to Buy

- [BIQU Equipment](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-skr-v1-4-skr-v1-4-turbo-control-board-tmc2209-tmc2208-eeprom-v1-0-exp-mot-v1-0-3d-printer-parts-for-ender-3&ref=openhardware.directory&product=bigtreetech-skr-v1-4-turbo&source=md-export) — $22.99

## Resources

- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fbigtreetech%2FBIGTREETECH-SKR-V1.4&ref=openhardware.directory&product=bigtreetech-skr-v1-4-turbo&source=md-export)
- [product](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-skr-v1-4-skr-v1-4-turbo-control-board-tmc2209-tmc2208-eeprom-v1-0-exp-mot-v1-0-3d-printer-parts-for-ender-3&ref=openhardware.directory&product=bigtreetech-skr-v1-4-turbo&source=md-export)

## Tags

`3d-printer`, `control-board`, `lpc1769`, `marlin`, `klipper`, `bigtreetech`, `open-source`, `32-bit`, `tmc2209`, `skr`

## Images

![BigTreeTech SKR V1.4 Turbo](https://nbg1.your-objectstorage.com/openhardware-directory/entities/bigtreetech-skr-v1-4-turbo/ff8c356c4af2.jpg)
![BigTreeTech SKR V1.4 Turbo](https://nbg1.your-objectstorage.com/openhardware-directory/entities/bigtreetech-skr-v1-4-turbo/e4920b549d22.jpg)

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