Seeed XIAO nRF52840 Sense Plus

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