Seeed Studio XIAO ESP32S3

The XIAO ESP32S3 brings Espressif's most capable chip to the 21 × 17.8 mm XIAO form factor. Two Xtensa LX7 cores at 240 MHz, 8 MB of PSRAM and 8 MB of flash give you room for graphics, audio, TinyML models and large web dashboards, while native USB lets the board act as a keyboard, mouse or MIDI device. It charges a LiPo battery on board and works with Arduino, ESP-IDF, MicroPython and CircuitPython.

Key features

• Dual-core Xtensa LX7 at 240 MHz with vector instructions for on-device AI
• 8 MB PSRAM + 8 MB flash — enough for images, audio buffers and ML models
• Wi-Fi 4 and Bluetooth LE 5 with a high-gain U.FL antenna
• Native USB (HID, MIDI, mass storage) on the USB-C port
• Built-in LiPo charger and deep sleep around 14 µA

Specifications

What's in the box

• 1 × XIAO ESP32S3 board
• 1 × U.FL antenna
• 2 × 7-pin headers (unsoldered)

Ideal for

• TinyML and voice/keyword projects
• USB HID gadgets
• Compact dashboards and web servers
• Wearables

Good to know

• Connect the antenna before enabling Wi-Fi or Bluetooth.
• GPIO pins are 3.3 V only.