# LILYGO T-TWR Plus

> Enhanced ESP32-S3 two-way radio board with SA868 UHF/VHF module, L76K GNSS, 1.3" OLED, AXP2102 PMIC, WS2812 RGB LED, TF card, and PPT button for APRS and walkie-talkie applications.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** dev-board
- **Price:** ~$51.74
- **Product Readiness:** developer
- **CPU:** Xtensa LX7 dual-core @ 240MHz, FPU, AI instructions
- **CPU Architecture:** Xtensa LX7
- **CPU Cores:** 2
- **RAM:** 512KB SRAM
- **PSRAM:** 8MB
- **Flash:** 16MB
- **USB:** USB-C
- **Power:** 5V + Li-Ion 18650
- **Operating Voltage:** 3.3V
- **Battery:** 18650/21700 (user-supplied)
- **Antenna:** SMA
- **SD Card:** microSD
- **Display:** 1.3" OLED 128×64

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 5.0

## Open Source

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

## Certifications

CE, FCC

## Compatible Firmware

arduino, esp-idf

## Use Cases

- two-way-radio
- asset-tracking
- iot-gateway

## Components

- **ESP32-S3-WROOM-1-N16R8** (mcu): Xtensa LX7 dual-core at 240MHz with 16MB flash, 8MB PSRAM, WiFi, and BLE 5.0. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32-s3-wroom-1_wroom-1u_datasheet_en.pdf&ref=openhardware.directory&product=lilygo-t-twr-plus&source=md-export)
- **SA868** (vhf-uhf-radio): Analog FM voice transceiver covering UHF (400–480 MHz) or VHF (134–174 MHz) bands. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FT-TWR&ref=openhardware.directory&product=lilygo-t-twr-plus&source=md-export)
- **SH1106** (display-driver): I2C OLED driver for 128×64 monochrome display. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.velleman.eu%2Fdownloads%2F29%2Flcd%2Fsh1106_datasheet.pdf&ref=openhardware.directory&product=lilygo-t-twr-plus&source=md-export)
- **L76K** (gps): Multi-constellation GNSS supporting GPS, BeiDou, GLONASS with 1PPS output. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.quectel.com%2FUploadImage%2FAndrd%2FQuectel_L76K_GNSS_Specification_V1.0.pdf&ref=openhardware.directory&product=lilygo-t-twr-plus&source=md-export)
- **AXP2102** (battery-charger): LiPo charging PMIC with multi-channel LDO outputs and power path management. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FT-TWR&ref=openhardware.directory&product=lilygo-t-twr-plus&source=md-export)

## Protocols

- **I2C**: SDA: GPIO8, SCL: GPIO9
- **UART**: TX: GPIO43, RX: GPIO44

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO8 | I2C SDA | I2C | digital-input, digital-output |
| GPIO9 | I2C SCL | I2C | digital-input, digital-output |

## Description

## Overview

The LILYGO T-TWR Plus is an enhanced version of the T-TWR, adding GPS navigation and improved power management to the two-way radio platform. Built on the ESP32-S3 with the SA868 UHF/VHF transceiver, it expands the original's capabilities with an L76K GNSS module, larger 1.3-inch SH1106 OLED display, AXP2102 PMIC, WS2812 RGB LED, and microSD card slot.

The L76K GPS enables APRS position reporting directly from the device, making it suitable for amateur radio fox-hunting, emergency location beaconing, and mobile APRS digipeaters. A dedicated PPT (Push-to-Talk) button enables hands-free radio operation, while support for 18650 and 21700 cells with spring contacts provides flexible battery options for extended field use.

The WiFi and BLE connectivity allows IP-to-RF bridging between analog radio networks and internet-connected systems. Popular with amateur radio operators and emergency preparedness communities building portable communications infrastructure.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-twr-plus&ref=openhardware.directory&product=lilygo-t-twr-plus&source=md-export) — $51.74

## Resources

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

## Tags

`esp32-s3`, `walkie-talkie`, `sa868`, `uhf`, `vhf`, `aprs`, `gps`, `lilygo`

## Images

![LILYGO T-TWR Plus](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-twr-plus/6e351dde8719.jpg)
![LILYGO T-TWR Plus](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-twr-plus/e9146930acd9.jpg)
![LILYGO T-TWR Plus](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-twr-plus/28e053f17810.jpg)
![LILYGO T-TWR Plus](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-twr-plus/6ea81c8e8a9e.jpg)
![LILYGO T-TWR Plus](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-twr-plus/aa15f39401df.png)

> **Battery Powered:** 18650

---
[View full device page](https://openhardware.directory/devices/lilygo-t-twr-plus)