Seeed Studio XIAO nRF52840 Sense - Soldered

Seeed Studio XIAO nRF52840 Sense (XIAO BLE Sense) is the sensor-equipped version of the XIAO nRF52840, adding an onboard digital microphone and 6-axis IMU to the same Nordic nRF52840 chip and Bluetooth Low Energy capability. It's built for embedded machine learning and motion or audio-sensing projects in a board that's still just 21 x 17.8mm. Solder-Free for Instant Creation This version comes with headers already soldered on, so there's no soldering iron required. Just unbox it and plug straight into a breadboard, ideal for rapid prototyping and TinyML experimentation. Onboard Sensors for Embedded ML The addition of a PDM digital microphone and a 6-axis IMU gives this board built-in audio and motion sensing without any extra wiring, making it well suited to TinyML applications like keyword spotting, gesture recognition, or wearable activity tracking. Wireless Connectivity and Low Power Design Bluetooth Low Energy 5.4 with an onboard antenna and NFC connectivity are built in, alongside efficient power management with deep sleep consumption as low as 5 μA and integrated lithium battery charge management. Specifications Processor Nordic nRF52840, ARM Cortex-M4 with FPU, up to 64 MHz Wireless Bluetooth Low Energy 5.4, Bluetooth Mesh, NFC On-chip Memory 1MB flash, 256KB RAM Onboard Memory 2MB QSPI flash Interface 1x UART, 1x I2C, 1x SPI, 1x NFC, 1x SWD, 11x GPIO (PWM), 6x ADC Sensors Onboard PDM digital microphone, onboard 6-axis IMU Dimensions 21 x 17.8mm Power 3.3V@200mA operating, 50mA/100mA charging, 5V via VIN, 5V via BAT, <5 μA standby Pinout Resources Seeed Studio Wiki, full setup guides, pinout diagrams, and project examples Browse our full range of XIAO Expansion & Breakout Boards Prefer to solder your own headers? Grab the unsoldered XIAO nRF52840 Sense instead. Don't need onboard sensors? See the XIAO nRF52840 (Soldered).