The Seeed Studio XIAO nRF52840 Sense is an ultra-compact, high-performance Bluetooth Low Energy (BLE) and TinyML development board designed for gesture recognition, audio processing, and wearable AI… 11× GPIOs (6× ADC channels, 1× UART, 1× I2C, 1× SPI, 1× SWD, 1× NFC).
The Seeed Studio XIAO nRF52840 Sense is an ultra-compact, high-performance Bluetooth Low Energy (BLE) and TinyML development board designed for gesture recognition, audio processing, and wearable AI applications. Built around the Nordic Semiconductor nRF52840 SoC, it houses a 32-bit ARM Cortex-M4 core with Floating Point Unit (FPU) operating at 64 MHz, delivering real-time mathematical processing for machine learning model inference on the edge.
What sets the Sense version apart from the standard XIAO nRF52840 is its onboard multi-sensor suit. It incorporates an ST LSM6DS3TR-C 6-axis Inertial Measurement Unit (IMU) for 3D acceleration and angular velocity tracking, alongside a digital MSM261D3526H1CPM PDM microphone for real-time sound sampling and voice command recognition.
The board features 256KB RAM, 1MB internal Flash, and an onboard 2MB QSPI flash memory for storing TinyML models, audio samples, or sensor logging scripts. For power management, it includes a BQ25101 lithium battery charging chip (50mA/100mA charging current) and consumes less than 5µA in deep sleep mode. It features a native USB Type-C port, onboard antenna, and a single-sided SMD layout with castellated edges for breadboarding or direct integration onto custom PCBs.
| Core Chipset | Nordic Semiconductor nRF52840 ARM Cortex-M4 32-bit processor with FPU @ 64 MHz |
|---|---|
| Memory & Storage | 256KB RAM, 1MB Internal Flash + 2MB Onboard QSPI Flash |
| Onboard Motion Sensor | 6-Axis IMU (ST LSM6DS3TR-C 3-axis accelerometer + 3-axis gyroscope) |
| Onboard Audio Sensor | Digital PDM Microphone module for real-time sound sampling |
| Wireless Capabilities | Bluetooth 5.0 Low Energy (BLE), Bluetooth Mesh, NFC, and Zigbee support with onboard antenna |
| Power & Charging | USB Type-C port + onboard BQ25101 Li-Po battery charging circuit |
| Low Power Efficiency | Standby / Deep Sleep power consumption as low as < 5µA |
| Exposed Interfaces | 11× GPIOs (6× ADC channels, 1× UART, 1× I2C, 1× SPI, 1× SWD, 1× NFC) |
| Software Ecosystem | Arduino IDE, TensorFlow Lite for Microcontrollers (TFLM), Edge Impulse, MicroPython, CircuitPython, and Zephyr RTOS |
| Form Factor | Ultra-small Seeed XIAO footprint (21mm × 17.5mm) with single-sided components |
Which interface does it use?
11× GPIOs (6× ADC channels, 1× UART, 1× I2C, 1× SPI, 1× SWD, 1× NFC).
Is it compatible with Arduino?
Yes. It works with Arduino projects.
Can I buy the Seeed Studio XIAO nRF52840 Sense TinyML/TensorFlow Lite IMU / Microphone in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
