Product Details
Seeed Studio XIAO nRF52840 Plus – Bluetooth Dev Board
If you thought the original XIAO was decent but found yourself cursing the lack of pins, the Seeed Studio XIAO nRF52840 Plus is here to silence your complaints. It takes the industry-standard Nordic nRF52840 chipset and drastically expands the utility by forcing 20 GPIOs onto a board barely larger than a postage stamp. Designed for the IoT maker who refuses to compromise on connectivity, this board runs Bluetooth 5.0, NFC, and handles battery management without breaking a sweat. It’s compatible with Arduino and CircuitPython, so you can spend less time wiring multiplexers and more time debugging your spaghetti code.
Why You Want It
The "Plus" isn't just marketing filler; it’s a direct response to developers who hit the ceiling with the standard layout. By utilizing an updated castellated design and additional backside pads, Seeed has unlocked the full potential of the Cortex-M4 processor. You get the same ultra-low power consumption and tiny footprint, but now with enough I/O to run complex peripherals like displays, sensors, and actuators simultaneously. Whether you're building a custom flight controller or a wearable that actually fits on a wrist, this board does the heavy lifting while you take the credit.
Specifications
- Processor: Nordic nRF52840, ARM® Cortex®-M4 32-bit with FPU @ 64 MHz
- Wireless Connectivity: Bluetooth 5.0 / BLE / NFC
- Memory: 256KB RAM
- Storage: 1MB On-chip Flash + 2MB Onboard QSPI Flash
- GPIO: 20 Total Pins (20 PWM/ 6 Analog capable)
- Interfaces: 1x I2C, 2x UART, 2x SPI, 1x I2S
- Battery Management: BQ25101 Chip (Integrated Li-ion charging)
- User Interface: 1x Reset Button, 1x 3-in-1 LED, 1x Charge LED
- Input Voltage: 5V (USB-C) or 3.7V (Battery)
What’s in the Box*
- 1× Seeed XIAO nRF52840 Plus Development Board
- 1x Pin headers (not soldered)
Product Notes
Compatible with Arduino, MicroPython, and CircuitPython. Requires a USB-C cable (not included, because you definitely have twelve of them already).
Disclaimer
*Heads up: This board ships without pin headers. It is designed for SMD board-to-board integration. If you need headers, buy them separately—we aren't a charity.
Still Here?
You’ve read the specs, you’ve checked the pinout, and you’re still hovering. Either you really need those extra UARTs, or you just enjoy reading formatted HTML. This nRF52840 Plus is the most capable board in its weight class. Add it to your stash before we sell out and you’re stuck using an oversized dev kit from 2015.