Adafruit ESP32-S3 Feather with 4MB Flash 2MB PSRAM - STEMMA QT / Qwiic

The Adafruit ESP32-S3 Feather is a powerful development board featuring the latest ESP32-S3 dual-core 240 MHz Tensilica processor. This version comes with 4MB of flash memory and 2MB of PSRAM, perfect for demanding IoT projects with support for WiFi and Bluetooth Low Energy (BLE).

Designed for flexibility and expandability, it includes native USB support enabling the board to act as a keyboard, mouse, MIDI device, or disk drive without requiring an external USB-to-Serial converter. It also features a STEMMA QT / Qwiic connector for easy I2C sensor compatibility and multiple power options including USB-C and Lithium Polymer batteries with built-in charging and monitoring capabilities.

Key Features:

• ESP32-S3 Dual Core 240MHz Tensilica processor with native USB support
• 4MB Flash memory and 2MB PSRAM for high performance and large buffers
• Built-in WiFi and Bluetooth Low Energy (BLE) connectivity
• Power via USB Type-C or Lithium Polymer battery with on-board charging
• Battery monitor chip MAX17048 for voltage and state of charge reporting
• STEMMA QT / Qwiic connector for I2C sensor compatibility with switchable power
• Multiple LEDs including On/Charge/User and NeoPixel with pin-controlled power
• Low power consumption suitable for deep sleep IoT applications (~100μA)
• Fully compatible with ESP-IDF, Arduino, and CircuitPython
• Compact dimensions: 52.3mm x 22.7mm x 7.2mm and lightweight at 6.3g

The board is FCC/CE certified and designed for IoT, wearable electronics, and smart home applications requiring robust wireless connectivity and flexible expansion options.