Description
The ADAFRUIT ESP32-S3 Feather is a compact development board for connected electronics, automation, wearables and embedded projects. Its dual-core ESP32-S3 processor combines 2.4 GHz Wi-Fi, Bluetooth Low Energy and native USB in the familiar Feather format.
This version includes 4 MB flash and 2 MB PSRAM for projects that need more working memory. It supports CircuitPython, Arduino and ESP-IDF, while the STEMMA QT connector makes it easier to add compatible I²C sensors and peripherals.
Why you’ll love it
- Connected projects: Built-in Wi-Fi and Bluetooth LE support IoT and wireless applications.
- More working memory: 2 MB PSRAM helps with buffers and memory-hungry projects.
- Native USB: Can act as a USB device without a separate USB-to-serial converter.
- Feather expansion: Works with the established FeatherWing ecosystem.
- Easy I²C expansion: STEMMA QT provides a solder-free connection for compatible devices.
- Flexible development: Supported by CircuitPython, Arduino and ESP-IDF.
Technical specifications
- Processor: Dual-core ESP32-S3 at up to 240 MHz
- Memory: 4 MB flash, 2 MB PSRAM and 512 KB SRAM
- Wireless: 2.4 GHz Wi-Fi and Bluetooth Low Energy; no Bluetooth Classic
- USB: USB-C with native USB support
- Expansion: FeatherWing format and STEMMA QT connector
- Software: CircuitPython, Arduino and ESP-IDF
- Dimensions: 52.3 × 22.7 × 7.2 mm



