Introducing the FeatherS3[D] - The pro ESP32-S3 Development Board in the Feather Format! FeatherS3[D] includes an onboard antenna and a u.FL connector for an external antenna on the same board, and you can switch which antenna to use via the RF switch on the fly from inside your code!

Two antenna options - one board!

The onboard antenna is selected by default, so you never need to worry about the RF switch being in a bad state or the ESP32-S3 getting damaged if you forget to plug in an external antenna.

The FeatherS3 ships with the latest version of CircuitPython that supports the ESP32-S3. It also ships with the UF2 bootloader, so you can easily update your FeatherS3 with the latest CircuitPython firmware whenever you desire.

As newer versions of CircuitPython are released, you can update as needed from circuitpython.org

Features & Specifications

• 32Bit Dual Core 240MHz
• RISC-V ultra low power core
• 2.4GHz Wifi - 802.11b/g/n
• Bluetooth® 5, BLE + Mesh
• 16MB QSPI Flash
• 8MB Extra QSPI PSRAM
• USB-C Connector
• Reverse USB back-feed protection
• 2x 700mA 3.3V LDO Regulator
• Ultra low deep sleep current
• 2x STEMMA connectors
• Low Power RGB LED
• VBAT voltage check and 5V presence detection
• LiPo Battery Charging
• Power (red), Charge (orange) LEDs
• 21x GPIO broken out
• USB Serial JTAG
• 3D High Gain Antenna
• Compatible with FeatherWings

Play video: New Products 8/21/25 Feat. Adafruit BMP581 I2C / SPI Temp Humidity Pressure Sensor - STEMMA QT