# LILYGO T4

> LILYGO T4 is an ESP32 development board with 8MB PSRAM, optional 2.2 or 2.4-inch ILI9341 TFT LCD display, Wi-Fi, Bluetooth 4.2 BLE, and Li-Po battery support.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** ESP32
- **Price:** ~$16.66
- **Product Readiness:** developer
- **CPU:** ESP32
- **CPU Architecture:** Xtensa LX6 32-bit
- **CPU Cores:** 2
- **RAM:** 520KB SRAM
- **PSRAM:** 8MB
- **Flash:** 4MB
- **USB:** Micro USB (CH9102F)
- **Power:** 5V + LiPo
- **Operating Voltage:** 3.3V
- **Display:** 2.4" ILI9341 TFT LCD 320x240

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 4.2

## Open Source

- **Firmware:** Yes
- **Schematics:** No
- **PCB Layout:** No

## Compatible Firmware

arduino, micropython, esphome

## Use Cases

- iot
- smart-home
- smart-home-dashboard
- digital-signage

## Components

- **ESP32** (mcu): Dual-core Xtensa LX6 at 240MHz with Wi-Fi 802.11 b/g/n, Bluetooth 4.2 BLE, 520KB SRAM, 4MB flash, 8MB PSRAM. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32_datasheet_en.pdf&ref=openhardware.directory&product=lilygo-t4&source=md-export)
- **ILI9341** (display-driver): ILI9341 TFT LCD display driver supporting 320x240 resolution, 65K colors, via 4-wire SPI interface, available in 2.2" and 2.4" screen sizes. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fdatasheets%2FILI9341.pdf&ref=openhardware.directory&product=lilygo-t4&source=md-export)

## Protocols

- **SPI**
- **I2C**
- **UART**
- **PWM**
- **ADC**
- **DAC**

## Available Software

- **[Arduino IDE]()** (open-source)
- **[MicroPython]()** (open-source)

## Description

## Overview

The LILYGO T4 (V1.3) is an ESP32-based development board featuring optional ILI9341 TFT LCD display integration in either a 2.2-inch or 2.4-inch variant, both offering 320×240 pixel resolution with 65K color support via 4-wire SPI interface. The board packs 4MB flash and 8MB PSRAM, making it suitable for memory-intensive graphical and IoT applications. It includes integrated Wi-Fi 802.11 b/g/n and Bluetooth 4.2 + BLE connectivity, a CH9102F QFN24 USB-to-serial chip for USB communication, onboard boot and reset buttons, battery detection circuitry, and a JST GH 1.25mm connector for Li-Po battery. Power is supplied at 3.3V. Compatible with Arduino IDE and MicroPython.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft4&ref=openhardware.directory&product=lilygo-t4&source=md-export) — $16.66

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft4&ref=openhardware.directory&product=lilygo-t4&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FTTGO-T4-TestCode&ref=openhardware.directory&product=lilygo-t4&source=md-export)

## Tags

`esp32`, `ili9341`, `tft-lcd`, `wifi`, `bluetooth`, `psram`, `lilygo`, `iot`, `display`

## Images

![LILYGO T4](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t4/2c6ba9f31dc4.jpg)
![LILYGO T4](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t4/a806b0e53251.jpg)
![LILYGO T4](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t4/305f390543c8.jpg)
![LILYGO T4](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t4/ca662f96b15f.jpg)
![LILYGO T4](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t4/aa15f39401df.png)

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