The Seeed Studio XIAO nRF52840 Sense is a thumb-sized, ultra-low-power development board designed for Bluetooth 5.0 and embedded machine learning applications. Powered by the Nordic nRF52840 SoC, it combines wireless connectivity, onboard sensors, and flexible programming support in a compact 21 × 17.5 mm form factor. With built-in 6-axis IMU and PDM digital microphone, it’s ideal for voice recognition, motion tracking, and TinyML projects. Whether you're building a wearable device, smart sensor, or AI-powered IoT node, the XIAO nRF52840 Sense delivers reliable performance, low power consumption, and seamless integration with Arduino and CircuitPython ecosystems. Feature Highlights Versatile Microcontroller: Nordic nRF52840 chip with FPU, up to 64 MHz, supports Arduino and CircuitPython Wireless Capabilities: Bluetooth 5.0, BLE, onboard antenna, and NFC connectivity Power Efficiency: Ultra-low power consumption (5 μA in deep sleep), with lithium battery charging support Onboard Sensors: Integrated PDM microphone and 6-axis IMU for embedded AI applications Compact Design: 21 × 17.5 mm footprint, perfect for wearables and space-constrained projects Specifications Item Seeed Studio XIAO nRF52840 Seeed Studio XIAO nRF52840 Sense Processor Nordic nRF52840 — ARM Cortex-M4 with FPU, up to 64 MHz Wireless Bluetooth 5.0 + NFC connectivity On-chip Memory 1MB Flash + 256KB RAM Onboard Memory 2MB QSPI Flash Interfaces UART, I2C, SPI, NFC, SWD, 11×GPIO (PWM), 6×ADC Sensors / PDM digital microphone + 6-axis IMU Dimensions 21 × 17.8 mm Power Circuit voltage: 3.3V @ 200mACharging current: 50mA / 100mAInput voltage (VIN): 5VStandby consumption:
