Product description
Compact development board featuring the ESP32-S2 and a uFL connector for external WiFi antennas – ideal for advanced IoT projects where range, low power consumption, and USB functionality are key. Includes a built-in STEMMA QT connector for fast, solderless I2C device integration, fully compatible with the SparkFun Qwiic and Seeed Grove ecosystems.
Note: Antenna not included. Requires a uFL-compatible antenna (e.g. 2.4 GHz flexible WiFi antenna) or a uFL to RP-SMA adapter. Most WiFi antennas use RP-SMA – avoid using a uFL to SMA adapter.
Specifications:
- ESP32-S2 (240 MHz single-core Tensilica processor)
- 4 MB Flash, 2 MB PSRAM
- 2.4 GHz WiFi with native USB (supported by all major OS)
- Supports USB serial, HID (keyboard/mouse), MIDI, and mass storage
- No Bluetooth support
- Compatible with Arduino IDE and CircuitPython
- 13 GPIO pins (11 via breakout pads, 2 via QT connector)
- 10 × 12-bit ADC (not available on high-speed SPI pads)
- 1 × 8-bit DAC
- PWM on all I/O pins
- 2 × I2C (1 via pads, 1 via STEMMA QT)
- Hardware UART, SPI (high-speed), and I2S support
- 5 × capacitive touch inputs (no external components required)
- Built-in RGB NeoPixel with power control for low-power modes
- Reset button and Boot 0 button for entering bootloader mode
- 3.3 V regulator with 600 mA peak output
- Battery input pad (up to 6 V, with diode protection)
- Power consumption: ~4 mA in light sleep, ~70 µA in deep sleep
- uFL connector for external WiFi antenna
- Form factor: Seeed Xiao compatible, with castellated edges for SMT mounting
- USB-C connector
