T7-S3 get it now

Overview

LILYGO T7-S3 is a compact general-purpose development board based on the ESP32-S3-WROOM-1 module with 16 MB Flash, 8 MB PSRAM, USB-C, and Bluetooth 5.0. It features a STEMMA QT / Qwiic JST-SH connector for easy I2C expansion, Li-Po battery support, and a 3.9 × 3.1 cm footprint. Suitable for IoT prototyping, sensor hubs, and any project benefiting from the ESP32-S3's dual-core LX7 performance and USB OTG capability.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
LilyGo-T7-S3	✓		GPIO, PSRAM, Wi-Fi, sensor examples

Arduino

1. Install Arduino IDE and Arduino ESP32
2. In Tools → Board, configure:

Arduino IDE Setting	Value
Board	ESP32S3 Dev Module
USB CDC On Boot	Enable
Flash Size	16MB (128Mb)
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	OPI PSRAM
Upload Speed	921600
USB Mode	CDC and JTAG

Key Features

• ESP32-S3-WROOM-1, dual-core LX7 @ 240 MHz, Wi-Fi + Bluetooth 5.0
• 16 MB Flash, 8 MB PSRAM
• USB-C (power, programming, USB OTG)
• STEMMA QT / Qwiic JST-SH I2C connector
• Li-Po battery support with charging
• Compact 39 × 31 mm board

Specifications

Parameter	Value
SOC	ESP32-S3-WROOM-1, Dual-core LX7 @ 240 MHz
Flash	16 MB
PSRAM	8 MB
Wireless	Wi-Fi 2.4 GHz 802.11 b/g/n, Bluetooth 5.0
USB	1 × USB-C (OTG capable)
Expansion	Qwiic / STEMMA QT (I2C)
Dimensions	39 × 31 mm

Pin Diagram

Software Libraries

• LilyGo-T7-S3 GitHub Repository

Changelog

Version	Date	Notes
V1.0		Initial release