# BigTreeTech TFT43/TFT50/TFT70 V3.0

> Larger-format dual-mode 3D printer displays in 4.3-inch, 5-inch, and 7-inch variants. STM32-based with touchscreen TFT and 12864 LCD emulation modes, SD/USB printing, compatible with Marlin.

## Quick Facts

- **Brand:** BigTreeTech
- **Board Type:** Display
- **Product Readiness:** consumer
- **CPU:** STM32F207VCT6 ARM Cortex-M3 @ 120MHz
- **CPU Architecture:** ARM Cortex-M3
- **CPU Cores:** 1
- **RAM:** 256KB SRAM
- **Flash:** 256KB Flash
- **Power:** 5V DC
- **Operating Voltage:** 3.3V
- **SD Card:** microSD
- **Display:** 4.3 / 5 / 7 inch TFT Color Touchscreen,12864 LCD (dual mode)

## Open Source

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

## Compatible Firmware

Marlin, Klipper

## Use Cases

- 3D Printing

## Components

- **STM32F207VCT6** (mcu): STMicroelectronics STM32F207VCT6 32-bit ARM Cortex-M3 microcontroller at 120MHz — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.st.com%2Fen%2Fmicrocontrollers-microprocessors%2Fstm32f207vc.html&ref=openhardware.directory&product=bigtreetech-tft43-tft50-tft70-v3-0&source=md-export)

## Protocols

- **UART**
- **SPI**
- **RS232**

## Description

The BigTreeTech TFT43/TFT50/TFT70 V3.0 series is a family of larger-format dual-mode touchscreen displays for 3D printers, available in 4.3-inch (TFT43), 5-inch (TFT50), and 7-inch (TFT70) variants. All three share the same firmware and feature set, differing only in physical screen size. The displays are powered by the same STM32F207VCT6 ARM Cortex-M3 at 120MHz as the TFT35 series.

Like the rest of the BIGTREETECH TFT lineup, these displays support two operating modes: a full-color touchscreen mode via RS232 serial and a 12864 LCD emulation mode for Marlin compatibility. In TFT mode, users can control temperatures, start and monitor prints from an SD card or USB flash drive, and interact with a modern graphical interface. Mode switching requires only a button press.

All three variants connect to 3D printer mainboards via EXP1/EXP2 connectors and are powered at 5V DC. Firmware and icons are updated via microSD card. The entire firmware stack is open-source and shared with the TFT35 series in the BIGTREETECH TouchScreenFirmware repository on GitHub.

## Where to Buy

- [BIQU Equipment](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbtt-tft43-v3-0-tft50-v3-0-tft70-v3-0-display-touch-screen-two-working-modes&ref=openhardware.directory&product=bigtreetech-tft43-tft50-tft70-v3-0&source=md-export)

## Resources

- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fbigtreetech%2FBIGTREETECH-TouchScreenFirmware&ref=openhardware.directory&product=bigtreetech-tft43-tft50-tft70-v3-0&source=md-export)
- [product](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbtt-tft43-v3-0-tft50-v3-0-tft70-v3-0-display-touch-screen-two-working-modes&ref=openhardware.directory&product=bigtreetech-tft43-tft50-tft70-v3-0&source=md-export)

## Tags

`3d-printing`, `display`, `touchscreen`, `tft43`, `tft50`, `tft70`, `dual-mode`, `12864`, `marlin`, `klipper`, `bigtreetech`, `stm32`, `large-display`

## Images

![BigTreeTech TFT43/TFT50/TFT70 V3.0](https://nbg1.your-objectstorage.com/openhardware-directory/entities/bigtreetech-tft43-tft50-tft70-v3-0/198a0132272d.jpg)
![BigTreeTech TFT43/TFT50/TFT70 V3.0](https://nbg1.your-objectstorage.com/openhardware-directory/entities/bigtreetech-tft43-tft50-tft70-v3-0/b976053ba437.jpg)
![BigTreeTech TFT43/TFT50/TFT70 V3.0](https://nbg1.your-objectstorage.com/openhardware-directory/entities/bigtreetech-tft43-tft50-tft70-v3-0/b33705056a28.jpg)
![BigTreeTech TFT43/TFT50/TFT70 V3.0](https://nbg1.your-objectstorage.com/openhardware-directory/entities/bigtreetech-tft43-tft50-tft70-v3-0/1c964bc278c8.jpg)

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