# LILYGO T-SIM7000G

> ESP32 board with SIMCom SIM7000G multi-band LTE-M/NB-IoT modem, GPS, 8MB PSRAM, USB-C, and 18650 battery support — designed for global cellular IoT deployments.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** dev-board
- **Price:** ~$35.14
- **Product Readiness:** developer
- **CPU:** Xtensa LX6 dual-core @ 240MHz, FPU, HW crypto (AES/SHA/RSA)
- **CPU Architecture:** Xtensa LX6
- **CPU Cores:** 2
- **RAM:** 520KB SRAM
- **PSRAM:** 8MB QSPI
- **Flash:** 4MB
- **USB:** USB-C 2.0
- **Power:** 5V + LiPo
- **Operating Voltage:** 3.3V
- **Antenna:** U.FL/IPEX (LoRa + GPS)
- **SD Card:** microSD

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 4.2
- **Cellular:** LTE-M / NB-IoT + GPRS (SIM7000G)

## Open Source

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

## Compatible Firmware

arduino, micropython, esphome, platformio

## Use Cases

- cellular-iot
- asset-tracking
- pet-tracker
- environmental-monitoring
- field-data-logger
- gps-tracking

## Components

- **ESP32-D0WDQ6** (mcu): Espressif ESP32-D0WDQ6 dual-core Xtensa LX6 at 240MHz with WiFi and Bluetooth 4.2/BLE. — [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-sim7000g&source=md-export)
- **SIM7000G** (cellular-modem): SIMCom SIM7000G multi-band modem supporting LTE-M, NB-IoT, and GPRS across global bands, with integrated GNSS for location tracking. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fsimcom.ee%2Fdocuments%2FSIM7000x%2FSIM7000%2520Series_AT%2520Command%2520Manual_V1.06.pdf&ref=openhardware.directory&product=lilygo-t-sim7000g&source=md-export)
- **CH9102** (usb-uart): WCH CH9102 USB-to-UART converter for programming and serial debug over USB-C. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.wch-ic.com%2Fdownloads%2FCH9102DS1_PDF.html&ref=openhardware.directory&product=lilygo-t-sim7000g&source=md-export)

## Protocols

- **UART**: TX: GPIO1, RX: GPIO3
- **SPI**: MOSI: GPIO15, MISO: GPIO2, CLK: GPIO14, CS: GPIO13
- **I2C**: SDA: GPIO21, SCL: GPIO22

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO0 | Boot / Free GPIO | GPIO | digital-input, strapping |
| GPIO2 | SD MISO | SPI | digital-input |
| GPIO4 | SIM7000G Power | GPIO | digital-output |
| GPIO12 | SIM7000G Reset | GPIO | digital-output |
| GPIO13 | SD CS | SPI | digital-output |
| GPIO14 | SD CLK | SPI | digital-output |
| GPIO15 | SD MOSI | SPI | digital-output |
| GPIO19 | SIM7000G RX | UART | digital-input |
| GPIO26 | SIM7000G TX | UART | digital-output |
| GPIO27 | Free GPIO | GPIO | digital-input, digital-output, adc, pwm |
| GPIO32 | Free GPIO | GPIO | digital-input, digital-output, adc, pwm, rtc |
| GPIO33 | Free GPIO | GPIO | digital-input, digital-output, adc, pwm, rtc |
| GPIO34 | Battery Voltage ADC | ADC | digital-input, adc, input-only |
| GPIO35 | Free ADC Input | ADC | digital-input, adc, input-only |

## Description

## Overview

The LILYGO T-SIM7000G combines the Espressif ESP32 dual-core processor with a SIMCom SIM7000G multi-band cellular modem capable of LTE-M, NB-IoT, and GPRS connectivity across global frequency bands. The SIM7000G also includes integrated GNSS positioning, making this board a complete cellular + GPS solution without any additional modules.

With 4MB flash, 8MB PSRAM, WiFi 802.11 b/g/n, and Bluetooth 4.2, the ESP32 can bridge cellular data to local wireless networks, run MQTT over LTE, or serve as a standalone remote monitoring node. An 18650 battery holder with onboard charging circuit enables deployments far from power outlets, and a solar charging cable interface allows energy harvesting in outdoor installations.

The USB-C port with CH9102 serial bridge provides reliable programming. A microSD slot supports local data logging when connectivity is intermittent. The board is well-suited for smart agriculture sensors, remote weather stations, vehicle trackers, and industrial telemetry applications requiring cellular fallback outside WiFi range.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-sim7000g&ref=openhardware.directory&product=lilygo-t-sim7000g&source=md-export) — $35.14

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-sim7000g&ref=openhardware.directory&product=lilygo-t-sim7000g&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-sim7000g&source=md-export)
- [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.lilygo.cc&ref=openhardware.directory&product=lilygo-t-sim7000g&source=md-export)

## Tags

`esp32`, `sim7000g`, `lte-m`, `nb-iot`, `gps`, `cellular`, `lilygo`, `18650`, `iot`

## Images

![LILYGO T-SIM7000G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7000g/6304fb0ec5ac.jpg)
![LILYGO T-SIM7000G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7000g/2fdcdaa35bcd.jpg)
![LILYGO T-SIM7000G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7000g/6489cb78aee7.jpg)
![LILYGO T-SIM7000G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7000g/56d29e94e0a9.jpg)
![LILYGO T-SIM7000G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7000g/352df81dbb45.jpg)
![LILYGO T-SIM7000G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7000g/d6cb34907a8f.jpg)
![LILYGO T-SIM7000G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7000g/573035273a34.jpg)
![LILYGO T-SIM7000G](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-sim7000g/b6b0935cc797.jpg)

> **Battery Powered:** 18650

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