T-SIM7080-S3 get it now

Overview

LILYGO T-SIM7080-S3 is a compact IoT development board combining the ESP32-S3 dual-core LX7 processor with the SIM7080G multi-band Cat-M / NB-IoT module. It adds Wi-Fi 4, Bluetooth 5.0 LE, and optional GNSS positioning, making it well-suited for low-power wide-area network (LPWAN) applications such as asset tracking, smart metering, and remote sensor nodes. The board integrates an onboard PMU with short-circuit and overload protection, an 18650 battery holder, a solar charging input (4.4 V–6 V), a TF card slot, and a nano SIM slot. Two USB ports are provided: USB-C for ESP32-S3 programming and a Micro-USB port dedicated to SIM7080G firmware upgrades.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
LilyGo-T-SIM7080G	✓		NB-IoT, Cat-M, GPS, BLE5, deep sleep examples

PlatformIO

1. Install Visual Studio Code and Python
2. Search for and install the PlatformIO IDE extension in VS Code
3. Open the LilyGo-T-SIM7080G project folder
4. Select your target example in platformio.ini
5. Click ✓ to compile, connect via USB-C, click → to upload

Arduino

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

Arduino IDE Setting	Value
Board	ESP32S3 Dev Module
Port	Your port
USB CDC On Boot	Enable
CPU Frequency	240 MHz (WiFi)
Flash Mode	QIO 80 MHz
Flash Size	16MB (128Mb)
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	OPI PSRAM
Upload Mode	UART0/Hardware CDC
Upload Speed	921600
USB Mode	CDC and JTAG

4. Click Upload

Development Platforms

1. ESP-IDF
2. Arduino IDE

Related Videos

Key Features

• ESP32-S3 dual-core LX7 @ 240 MHz, Wi-Fi 4 + Bluetooth 5.0 LE
• SIM7080G multi-band Cat-M1 / NB-IoT module (global frequency bands)
• GNSS positioning (GPS, optional concurrent with data — note: Cat-M/NB and GPS cannot run simultaneously)
• Solar charging input 4.4 V–6 V for off-grid deployment
• 18650 battery holder with onboard PMU (short circuit + overload protection)
• TF card slot and nano SIM card slot
• USB-C for programming; Micro-USB for SIM7080G firmware upgrade
• 16 MB Flash, 8 MB PSRAM (Octal SPI — GPIO 35–37 reserved)

Specifications

Parameter	Value
SOC	ESP32-S3 dual-core LX7 @ 240 MHz
Flash	16 MB
PSRAM	8 MB (Octal SPI)
Wireless	Wi-Fi 4 (2.4 GHz 802.11 b/g/n), Bluetooth 5.0 LE
Cellular	SIM7080G — Cat-M1 / NB-IoT (multi-band global)
GNSS	GPS (via SIM7080G, not concurrent with cellular data)
SIM	Nano SIM
Storage	TF card slot
Power	USB-C, 18650 battery, solar input 4.4 V–6 V
USB	USB-C (ESP32-S3) + Micro-USB (SIM7080G firmware)
Weight
Package size

Pin Diagram

Dimensions

Schematic

• T-SIM7080G Schematic

Datasheet

Software Libraries

• LilyGo-T-SIM7080G GitHub Repository

FAQ

• SIM card not detected: Insert the SIM card before powering on. Hot-inserting after the SIM7080G has started will not be detected.
• Turning off the board: Press and hold PWRKEY for 6 seconds to power off; press for 128 ms to power on.
• GPIO 35–37 unavailable: These pins are used internally by the Octal SPI PSRAM.

Changelog

Version	Date	Notes
V1.0		Initial release