Seeed Studio XIAO nRF52840 Development Board

The Seeed Studio XIAO nRF52840 Development Board is a powerful yet compact nRF52840 module designed by Nordic, bringing wireless capability to the XIAO family for the first time.

This versatile nRF52840 board supports Bluetooth 5.0 and is optimized for low power consumption, making it an excellent choice for IoT, wearable devices, and Bluetooth-based applications.

With its tiny size and robust performance, the Seeed Studio XIAO nRF52840 is the perfect microcontroller for developers looking to build efficient and reliable wireless solutions.

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Features:

• Versatile Microcontroller: Incorporate the Nordic nRF52840 chip with FPU, operating up to 64 MHz, mounted multiple development ports, supported by Arduino / CircuitPython /Micropython  
• Wireless Capabilities: Implement Bluetooth 5.0, BLE functions with onboard antenna, also provide NFC connectivity Elaborate 
• Power Design: Provide ultra-low power consumption as 5 μA in deep sleep mode while supporting lithium battery charge management
• Thumb-sized Design: 21 x 17.8mm, Seeed Studio XIAO series classic form-factor, suitable for wearable devices
• Perfect for Production: Breadboard-friendly & SMD design, no components on the back

Top 3 Wearable Projects with XIAO nRF52840

• Fitness Tracker / Health Monitor: Combine a heart-rate or motion sensor + the nRF52840’s BLE to stream data to a smartphone — ideal for step-count, activity logging or basic biometric monitoring.
• Wireless Sensor Patch: Use environmental sensors (temperature, humidity, air-quality) or motion/gesture sensors to build a small, battery-powered wearable or clip-on sensor node that sends periodic data via BLE.
• Smart Wearable Gadget (e.g. Gesture Controller / Remote Button): Use accelerometer / IMU (on versions with sensors) or external motion sensors + BLE to build a wearable remote (for lights, IoT devices) or gesture-based controller.