# LILYGO T-Dongle ESP32-S2

> USB-A dongle form factor board with ESP32-S2, 1.14-inch ST7789V IPS LCD, Wi-Fi, OTG, TF card slot, and Grove connector. Predecessor to the T-Dongle S3 series, ideal for portable USB IoT devices.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** ESP32-S2
- **Price:** ~$10.44
- **Product Readiness:** developer
- **CPU:** ESP32-S2
- **CPU Architecture:** Xtensa LX7 single-core
- **RAM:** 320KB
- **Flash:** 4MB
- **USB:** USB-A
- **Power:** 5V
- **Operating Voltage:** 3.3V
- **Antenna:** 3D ceramic / IPEX (switchable)
- **SD Card:** microSD
- **Display:** 1.14" IPS LCD 135×240

## Connectivity

- **Wifi:** 802.11 b/g/n

## Open Source

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

## Compatible Firmware

arduino, esp-idf, platformio

## Use Cases

- usb-hid-device
- portable-display
- usb-data-logger
- wifi-sniffing
- embedded-ui

## Components

- **ESP32-S2** (mcu): Single-core Xtensa LX7 at 240MHz with Wi-Fi 802.11 b/g/n; no Bluetooth hardware — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32-s2_datasheet_en.pdf&ref=openhardware.directory&product=lilygo-t-dongle-esp32-s2&source=md-export)
- **ST7789V** (display-driver): 1.14-inch IPS LCD controller; 135×240 resolution at 260 PPI; 4-wire SPI interface — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.crystalfontz.com%2Fcontrollers%2FSitronix%2FST7789V%2F&ref=openhardware.directory&product=lilygo-t-dongle-esp32-s2&source=md-export)

## Protocols

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

## Available Software

- **[Arduino IDE](https://openhardware.directory/r?to=https%3A%2F%2Fwww.arduino.cc%2F&ref=openhardware.directory&product=lilygo-t-dongle-esp32-s2&source=md-export)**

## Description

## Overview

The LILYGO T-Dongle ESP32-S2 is a USB-A dongle form factor development board based on the ESP32-S2 Xtensa LX7 processor. It integrates a 1.14-inch ST7789V IPS color LCD (135×240 pixels) on a board measuring just 72×23×12mm. The board includes an OTG male/female interface, TF (microSD) card slot, Grove 4-pin I2C/UART connector, DIP switch, and a high-sensitivity 3D Wi-Fi antenna with optional IPEX external antenna connection. It ships with a transparent ABS protective case. Note: this board uses Wi-Fi only (no Bluetooth) as the ESP32-S2 does not include Bluetooth hardware.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-dongle-esp32-s2-1-14-inch-lcd-board&ref=openhardware.directory&product=lilygo-t-dongle-esp32-s2&source=md-export) — $10.44

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-dongle-esp32-s2-1-14-inch-lcd-board&ref=openhardware.directory&product=lilygo-t-dongle-esp32-s2&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FT-Dongle-ESP32S2&ref=openhardware.directory&product=lilygo-t-dongle-esp32-s2&source=md-export)

## Tags

`esp32-s2`, `usb-dongle`, `lcd`, `otg`, `portable`, `wifi`

## Images

![LILYGO T-Dongle ESP32-S2](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-dongle-esp32-s2/7f844041e76c.jpg)
![LILYGO T-Dongle ESP32-S2](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-dongle-esp32-s2/b69746c57082.jpg)
![LILYGO T-Dongle ESP32-S2](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-dongle-esp32-s2/6138ee3da3fe.jpg)
![LILYGO T-Dongle ESP32-S2](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-dongle-esp32-s2/da5ec983b4fe.jpg)
![LILYGO T-Dongle ESP32-S2](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-dongle-esp32-s2/781da79aea24.jpg)
![LILYGO T-Dongle ESP32-S2](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-dongle-esp32-s2/83bf8962209d.jpg)
![LILYGO T-Dongle ESP32-S2](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-dongle-esp32-s2/27fba6ab76da.jpg)
![LILYGO T-Dongle ESP32-S2](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-dongle-esp32-s2/aa15f39401df.png)

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