This is the XIAO nRF52840 Sense with a little bit extra on board! It has the same Nordic nRF52840 ARM Cortex-M4 32-bit processor with FPU at 64Mhz, Bluetooth 5.0 with built-in antenna and NFC support, 6-axis IMU and PDM microphone and 5 μA deep sleep power consumption.
What’s Been Added
- There are now 20 GPIO (PWM) pins instead of 11 for projects needing expanded I/Os via SMD board-to-board soldering
- An I2S and an extra SPI connection have been added
- The NFC pins have been exposed for easier integration into IoT and smart card projects
- The BAT pin has been repositioned for easier soldering
Note: The XIAO Sense Plus doesn’t come with 7-pin headers as it’s designed for SMD board-to-board soldering. If you’d still like some 7-pin headers, click here to see them in our store.
Click here to see our other XIAO boards in the store.
Features
- Nordic Semiconductor‘s nRF52840 chip with FPU at 64 MHz, multiple development ports, compatible with Arduino/CircuitPython/MicroPython
- Integrated 6-axis IMU and PDM microphone enable motion sensing and audio input, ideal for wearable devices and compact ML applications
- Bluetooth 5.0 with built-in antenna and NFC support
- 5 μA deep sleep consumption with integrated Li-ion battery charging
- 9 extra 1.27mm pitch SMD castellation pins beyond standard XIAO nRF52840
- Standard backside layout (with aligned battery pads, and debugger pads) for more to-be-released XIAO expansion boards
- 21 x 17.8mm design with 2.54mm pin headers, single-sided mounting for wearables and space-constrained projects
- Natively compatible with all the XIAO accessory add-ons of expansion, connectivity modules (LoRa, CAN_Bus, RS-485), sensors (2-Mic Array, Vision AI, mmWave Motion, Environmental sensing), and actuators (ePaper display, LED Matrix, relay and more).
- Product Number: Seeed 102010694
What’s on Board

Specifications
| Processor | Nordic nRF52840, ARM Cortex-M4 32-bit processor with FPU, 64 MHz |
| Wireless Connectivity | Bluetooth 5.0/BLE/NFC |
| Memory | 256KB RAM, 1MB Flash 2MB onboard Flash |
| Built-in Sensors | 6 DOF IMU (LSM6DS3TR-C), PDM Microphone |
| Interfaces | 1x I2C, 2x UART, 2x SPI, 1x I2S |
| PWM/Analogue Pins | 20/6 |
| Buttons | Reset Button |
| LEDs | 3-in-one LED/ Charge LED |
| Battery Charge Chip | BQ25101 |
| Programming Languages | Arduino/MicroPython/ CircuitPython |
Resources
- Product Wiki
- nRF52840 datasheet
- Schematic
- KiCAD file
Pinout

Package Contents
- 1x XIAO nRF52840 Sense Plus



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