# LILYGO T3 STM32

> STM32WL55CCU6 LoRa development board with dual Cortex-M4 + M0+ cores, built-in LoRa/FSK/MSK radio at 433/868/915MHz, 0.96-inch SSD1315 OLED, 256KB Flash, 64KB RAM, and open-source Arduino/STM32CubeIDE firmware support.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** STM32
- **Price:** ~$15.03
- **Product Readiness:** developer
- **CPU:** STM32WL55CCU6
- **CPU Architecture:** Arm Cortex-M4 + Cortex-M0+
- **CPU Cores:** 2
- **RAM:** 64KB
- **Flash:** 256KB
- **USB:** USB-C
- **Power:** 5V + LiPo
- **Operating Voltage:** 3.3V
- **Antenna:** U.FL/IPEX
- **SD Card:** microSD
- **Display:** 0.96" OLED 128×64

## Connectivity

- **Lora:** 433/868/915MHz (integrated STM32WL)

## Open Source

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

## Compatible Firmware

arduino, platformio

## Use Cases

- lora-mesh-networking
- off-grid-communication
- iot
- environmental-monitoring
- lora-messenger

## Components

- **STM32WL55CCU6** (mcu): Dual-core STM32WL with Cortex-M4 and Cortex-M0+ CPUs plus integrated sub-GHz LoRa/FSK/MSK/BPSK radio at 433/868/915MHz. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.st.com%2Fresource%2Fen%2Fdatasheet%2Fstm32wl55cc.pdf&ref=openhardware.directory&product=lilygo-t3-stm32&source=md-export)
- **SSD1315** (display): 0.96-inch monochrome OLED at 128×64 resolution via SPI interface. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fdatasheets%2FSSD1306.pdf&ref=openhardware.directory&product=lilygo-t3-stm32&source=md-export)

## Protocols

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

## Description

## Overview

The LILYGO T3 STM32 is a unique LoRa development board built around the STMicroelectronics STM32WL55CCU6 — a dual-core SoC with Arm Cortex-M4 (application processor) and Cortex-M0+ (radio controller) cores. Unlike ESP32-based T3 boards, the STM32WL has the LoRa radio integrated directly on-chip rather than as a separate module. It supports LoRa, (G)FSK, (G)MSK, and BPSK modulation at 433/868/915MHz, making it compatible with LoRaWAN and custom LoRa protocols. The board includes 256KB Flash and 64KB SRAM, a 0.96-inch SSD1315 OLED display (128×64, SPI interface), and a TF card slot. Programmable via Arduino (STM32duino) or STM32CubeIDE, it is a compelling alternative for users who want a true integrated LoRa SoC without the ESP32 ecosystem, ideal for long-range sensor nodes and low-power LoRaWAN end devices.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft3-stm32&ref=openhardware.directory&product=lilygo-t3-stm32&source=md-export) — $15.03
- [OpenELab](https://openhardware.directory/r?to=https%3A%2F%2Fopenelab.io%2Fproducts%2Flilygo-t3-stm32-st-state&ref=openhardware.directory&product=lilygo-t3-stm32&source=md-export) — €22.95

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft3-stm32&ref=openhardware.directory&product=lilygo-t3-stm32&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FT3-STM32&ref=openhardware.directory&product=lilygo-t3-stm32&source=md-export)

## Tags

`stm32`, `stm32wl`, `lora`, `lorawan`, `oled`, `cortex-m4`, `development-board`, `iot`

## Images

![LILYGO T3 STM32](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-stm32/889fcec77f9f.jpg)
![LILYGO T3 STM32](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-stm32/6b0f369d4fe5.jpg)
![LILYGO T3 STM32](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-stm32/e3bb7f1c96d0.jpg)
![LILYGO T3 STM32](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-stm32/6b5909a9b4eb.jpg)
![LILYGO T3 STM32](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-stm32/bd377b438cc4.jpg)
![LILYGO T3 STM32](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t3-stm32/aa15f39401df.png)

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