# LILYGO T3-S3 MVSR

> ESP32-S3 LoRa voice kit with MAX98357A speaker, MSM261S4030HOR microphone, vibration motor, RTC, 0.96-inch SSD1306 OLED, 4MB Flash, 2MB PSRAM, and SX1262/SX1276/SX1280 radio options — designed for LoRa voice communication and off-grid messaging.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** ESP32-S3
- **Price:** ~$26.15
- **Product Readiness:** developer
- **CPU:** ESP32-S3FH4R2
- **CPU Architecture:** Xtensa LX7 dual-core
- **CPU Cores:** 2
- **PSRAM:** 2MB
- **Flash:** 4MB
- **USB:** USB-C
- **Power:** 5V + LiPo
- **Operating Voltage:** 3.3V
- **Antenna:** U.FL/IPEX
- **Display:** 0.96" OLED 128×64

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 5.0
- **Lora:** SX1262/SX1276/SX1280 (433/868/915MHz/2.4G)

## Open Source

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

## Compatible Firmware

arduino, platformio, meshtastic

## Use Cases

- lora-mesh-networking
- off-grid-communication
- iot
- two-way-radio
- lora-messenger

## Components

- **ESP32-S3FH4R2** (mcu): Dual-core Xtensa LX7 at 240MHz with 4MB Flash, 2MB PSRAM, WiFi, and BLE 5.0. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32-s3_datasheet_en.pdf&ref=openhardware.directory&product=lilygo-t3-s3-mvsr&source=md-export)
- **SSD1306** (display): 0.96-inch monochrome OLED at 128×64 resolution via I2C interface. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fdatasheets%2FSSD1306.pdf&ref=openhardware.directory&product=lilygo-t3-s3-mvsr&source=md-export)
- **SX1262** (radio): Semtech SX1262 sub-GHz LoRa transceiver (433/868/915MHz, variant-dependent). — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fsemtech.com%2Fuploads%2Fdocuments%2FDS_SX1261-2_V2.1.pdf&ref=openhardware.directory&product=lilygo-t3-s3-mvsr&source=md-export)
- **MAX98357A** (audio): Maxim MAX98357A I2S digital-to-analog audio amplifier for speaker output. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdatasheets.maximintegrated.com%2Fen%2Fds%2FMAX98357A-MAX98357B.pdf&ref=openhardware.directory&product=lilygo-t3-s3-mvsr&source=md-export)
- **MSM261S4030HOR** (microphone): I2S MEMS microphone for audio capture and voice input. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.mouser.com%2Fdatasheet%2F2%2F744%2FMerry_MSM261S4030HOR_Rev_A_1-2536185.pdf&ref=openhardware.directory&product=lilygo-t3-s3-mvsr&source=md-export)

## Protocols

- **UART**
- **SPI**
- **I2C**
- **I2S**

## Description

## Overview

The LILYGO T3-S3 MVSR (Microphone, Vibration, Speaker, RTC) is an ESP32-S3 expansion backplate designed for the T3-S3 V1.2 motherboard, adding rich multimedia and communication peripherals. It integrates a MAX98357A I2S audio amplifier with a speaker, an MSM261S4030HOR MEMS microphone for audio capture, a vibration motor for haptic notifications, and an onboard RTC for accurate timekeeping. The board retains the T3-S3's 0.96-inch SSD1306 OLED display (128×64) and is powered by the ESP32S3FH4R2 with 4MB Flash and 2MB PSRAM. LoRa radio options include SX1280 (2.4GHz), SX1276, and SX1262 at 433/868/915MHz. With ultra-low static current and comprehensive IoT peripherals, it is ideal for LoRa voice communication kits, off-grid audio messengers, and Meshtastic voice extension projects. Dimensions: 66×15×27mm.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft3-s3-mvsr&ref=openhardware.directory&product=lilygo-t3-s3-mvsr&source=md-export) — $26.15

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft3-s3-mvsr&ref=openhardware.directory&product=lilygo-t3-s3-mvsr&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FT3-S3-MVSRBoard&ref=openhardware.directory&product=lilygo-t3-s3-mvsr&source=md-export)

## Tags

`esp32-s3`, `lora`, `sx1262`, `sx1276`, `sx1280`, `speaker`, `microphone`, `vibration-motor`, `rtc`, `oled`, `meshtastic`, `iot`

## Images

![LILYGO T3-S3 MVSR](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-s3-mvsr/67f2e05606db.jpg)
![LILYGO T3-S3 MVSR](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-s3-mvsr/7cb8a9f58718.jpg)
![LILYGO T3-S3 MVSR](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-s3-mvsr/379c74d538b8.jpg)
![LILYGO T3-S3 MVSR](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-s3-mvsr/9fc8bc99d28d.jpg)
![LILYGO T3-S3 MVSR](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-s3-mvsr/9aee254fee59.jpg)
![LILYGO T3-S3 MVSR](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-s3-mvsr/14dcf862264b.jpg)
![LILYGO T3-S3 MVSR](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-s3-mvsr/6cc8d5237e9c.jpg)
![LILYGO T3-S3 MVSR](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-s3-mvsr/aa15f39401df.png)

> **Battery Powered:** Li-Po

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