LILYGO T-Micro32 S3

Overview

The T-Micro32 S3 is one of LILYGO's most affordable ESP32-S3 development boards, bringing the ESP32-S3FH4R2 module to a compact and accessible form factor. With 4MB of flash and 2MB of PSRAM, it provides the dual-core Xtensa LX7 processor with WiFi and Bluetooth 5 LE capabilities at a budget-friendly price point of under $5.

The board is designed for engineers, students, and makers who need a small ESP32-S3 node for wireless IoT applications, wearables, or space-constrained projects. Its compact dimensions make it suitable for embedding into custom enclosures or portable devices.

Documentation, pin diagrams, and sample code are available through the LILYGO GitHub organization and wiki. The T-Micro32 S3 is compatible with all standard ESP32-S3 development frameworks including Arduino IDE, ESP-IDF, and MicroPython.

Firmware Compatibility

The T-Micro32 S3 supports Arduino IDE, ESP-IDF, and MicroPython with standard ESP32-S3 board definitions.

Flashing Guide

1. Install Arduino IDE with ESP32-S3 board support
2. Connect via USB and select the appropriate COM port
3. Select "ESP32S3 Dev Module" as the board with matching flash/PSRAM settings
4. Hold BOOT and press RESET to enter download mode if needed
5. Upload your firmware and press RESET to run