# LILYGO T-SIM7070G

> ESP32-WROVER-E development board with SIM7070G NB-IoT/LTE-M/GPRS modem, GPS, Wi-Fi, Bluetooth 4.2, MicroSD, and solar charging input for ultra-low-power IoT applications.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** ESP32
- **Price:** ~$26.59
- **Product Readiness:** developer
- **CPU:** ESP32-WROVER-E
- **CPU Architecture:** Xtensa LX6 dual-core
- **RAM:** 520KB SRAM
- **PSRAM:** 8MB
- **Flash:** 4MB
- **USB:** USB-C (CH9102)
- **Power:** 5V
- **Operating Voltage:** 3.3V
- **Battery:** LiPo (user-supplied, 1.25mm JST)
- **Charging Port:** USB-C
- **Antenna:** U.FL/IPEX
- **SD Card:** microSD

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 4.2
- **Cellular:** NB-IoT / LTE-M / GPRS

## Open Source

- **Status:** open-firmware
- **Firmware:** Yes
- **Schematics:** No
- **PCB Layout:** No

## Compatible Firmware

arduino, esp-idf

## Use Cases

- asset-tracking
- iot-sensors
- smart-agriculture
- remote-monitoring
- fleet-management
- environmental-monitoring

## Components

- **ESP32-WROVER-E** (mcu): Dual-core 240 MHz Xtensa LX6 MCU with 8 MB PSRAM and 4 MB flash, integrated Wi-Fi and Bluetooth 4.2. — [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-t-sim7070g&source=md-export)
- **SIM7070G** (cellular-modem): SIMCOM SIM7070G multi-band NB-IoT / Cat-M1 / GPRS / EDGE modem with integrated GNSS (GPS, GLONASS, BeiDou) support. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fsimcom.ee%2Fdocuments%2FSIM7070G%2FSIM7080G_Hardware_Design_V1.02.pdf&ref=openhardware.directory&product=lilygo-t-sim7070g&source=md-export)
- **CH9102** (usb-bridge): WCH CH9102 USB-to-TTL serial converter enabling USB programming and debugging. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.wch-ic.com%2Fproducts%2FCH9102.html&ref=openhardware.directory&product=lilygo-t-sim7070g&source=md-export)

## Protocols

- **I2C**
- **SPI**
- **UART**
- **SDIO**
- **I2S**
- **CAN**

## Available Software

- **[Arduino IDE]()** (open-source)
- **[ESP-IDF]()** (open-source)

## Description

## Overview

The LILYGO T-SIM7070G is a compact IoT development board powered by the ESP32-WROVER-E module with 8 MB PSRAM and 4 MB flash. It integrates the SIM7070G modem supporting NB-IoT, LTE Cat-M1, GPRS, and EDGE connectivity along with multi-constellation GNSS (GPS, GLONASS, BeiDou). The board includes a MicroSD card slot, Nano SIM slot, solar charging input, and is programmable via USB with a CH9102 USB-to-serial chip. Its ultra-low-power cellular technology makes it ideal for battery-backed and solar-powered IoT deployments.

## Where to Buy

- [LILYGO Official Store](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-sim7070g&ref=openhardware.directory&product=lilygo-t-sim7070g&source=md-export) — $26.59

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-sim7070g&ref=openhardware.directory&product=lilygo-t-sim7070g&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FLilyGo-Modem-Series&ref=openhardware.directory&product=lilygo-t-sim7070g&source=md-export)

## Tags

`esp32`, `nb-iot`, `lte-m`, `cellular`, `gps`, `iot`, `solar`, `lilygo`, `sim7070g`, `lpwa`

## Images

![LILYGO T-SIM7070G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7070g/6580d543cfb5.jpg)
![LILYGO T-SIM7070G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7070g/8ad06952bd7e.jpg)
![LILYGO T-SIM7070G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7070g/cef8d6cc320d.jpg)
![LILYGO T-SIM7070G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7070g/6c7eb2dca0e0.jpg)
![LILYGO T-SIM7070G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7070g/a4be5be1f742.jpg)
![LILYGO T-SIM7070G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7070g/aa15f39401df.png)

> **Battery Powered:** Li-Po

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