Seeed Xiao BLE nRF52840 Sense - TinyML/TensorFlow Lite- IMU / Microphone - Bluetooth5 - Seeedstudio 102010469

The small PCB produced by Seeedstudio is based on the efficient Nordic nRF52840 ARM Cortex M4 chip with a clock speed of 64 MHz. The board is equipped with wireless connectivity Blutooth 5.0 , NFC and ZigBee . It allows you to create applications based on artificial intelligence together with TinyML . On the board you can also find a 6-axis IMU sensor , which can be used in TinyML projects to recognize gestures. The BQ25101 battery charging system and numerous communication interfaces allow you to create mobile wireless projects. Xiao BLE nRF52840 is another miniature board from the Seeed Xiao series. Like Seeeduino Xiao , it has a small size of 21 x 17.5 mm and numerous communication interfaces, such as: 1x UART, 1x I2C, 1x SPI, 1x NFC, 1x SWD, 11x GPIO, 6x ADC, 1x LEDN 3in1, 1x user LED . The module is also equipped with the MSM261D3526H1CPM microphone. The USB type C interface is responsible for programming and powering the board, and the battery is also charged through it, thanks to the built-in Li-Pol 3.7V charger system. The board is equipped with 2 MB Flash memory, it can be programmed in Arduino, MicroPython, CircuitPython and other programming languages.

• Powerful CPU: Nordic nRF52840, ARM Cortex M4 32-bit with 64MHz FPU
• Wireless connectivity: Bluetooth 5.0, NFC and ZigBee with a built-in Bluetooth antenna
• Ultra small dimensions: 21 x 17.5 mm
• Ultra low power consumption: 5 μA, deep sleep mode
• Battery charging system: BQ25101 chip that supports lithium batteries
• Rich in interfaces: 1x reset button, 1x UART, 1x I2C, 1x SPI, 1x NFC, 1x SWD, 11x GPIO, 6x ADC, 1x 3-in-1 LED, 1x user LED
• Built-in 2 MB Flash memory
• Built-in microphone, real-time acquisition suitable for sound recognition projects
• Built-in 6-axis IMU sensor, which in combination with TinyML allows to recognize gestures
• Components placed on one side of the board by the surface method
• Perfect for IoT / smart clothing projects
• Suitable for TinyML artificial intelligence projects: detection, processing, 3-in-1 communication

• Appliances for clothes
• Wireless communication
• Built-in machine learning projects
• IoT applications and TinyML artificial intelligence (AI)
• Perfect for miniature Arduino projects

• Seeed Xiao BLE nRF52840 Sense - TinyML / TensorFlow Lite- IMU / microphone - Bluetooth 5 - Seeedstudio 102010469
• 2x male goldpin strip 1x 7-pin

Seeed Xiao nRF52840 Sense kit contents.

The Seeed Xiao nRF52840 Sense board.

• Processor: Nordic nRF52840, ARM Cortex-M4 64 MHz
• Wireless Connectivity: Bluetooth 5.0, NFC, ZigBee
• Chip memory: 1 MB Flash memory and 256 KB RAM memory
• Board memory: 2 MB of QSPI Flash memory
• Interfaces:
  • 1x UART
  • 1x I2C
  • 1x SPI
  • 1x NFC
  • 1x SWD
  • 11x GPIO (PWM)
  • 6x ADC
• Sensors: PDM digital microphone, 6-axis IMU
• Working voltage: 3.3 V / 200 mA
• Charging current: 50 mA / 100 mA
• Input voltage: 5V
• Standby current consumption: less than 5 μA
• Dimensions: 21 x 17.5 mm

• The website of the manufacturer: Seeedstudio 102010469
• User Guide
• Seeed Studio XIAO Series - user manual
• Documentation BQ25101
• Documentation ST LSM6DS3TR
• Documentation of MSM261D3526H1CPM
• Documentation Nano BLE MCU-nRF52480 PS v1.1
• The position of the lower pads
• Seeed Xiao nRF52840 v1.0 diagram
• Documentation Flash_P25Q16H-UXH-IR
• Seeed Xiao BLE test report nRF52840 BLE Distance
• CE / FCC / MIC certification
• Reference design
• Case studies