Descrizione

Build a compact Bluetooth wearable or sensor project with the Seeed Studio XIAO nRF52840. This is the standard, non-Sense board, with a Nordic nRF52840 MCU, onboard Bluetooth antenna and lithium battery charging. It does not include the Sense model's IMU or microphone.

Choose your XIAO nRF52840

The standard XIAO nRF52840 has 11 digital I/O. The XIAO nRF52840 Plus adds nine GPIOs through 1.27 mm SMD castellations for board-to-board soldering. Choose the XIAO nRF52840 Sense if you need an onboard 6-axis IMU and PDM microphone; those sensors are not fitted to the non-Sense boards.

Setup and pinout

Start with Seeed's Arduino setup guide and check the board pinout before wiring. Use a USB-C data cable for programming.

For more selection help, see standard nRF52840 vs Sense and our Arduino setup guide.

Features

• Versatile Microcontroller: Incorporate the Nordic nRF52840 chip with FPU, operating up to 64 MHz, mounted multiple development ports, supported by Arduino / CircuitPython
• 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 17.5mm, Seeed Studio XIAO series classic form-factor, suitable for wearable devices
• Perfect for Production: Breadboard-friendly & SMD design, no components on the back

Seeed Studio XIAO nRF52840 has an ultra-low power consumption of only 5 μA in the deep sleep mode, the embedded BQ25101 chip supports battery charge management which prolongs its use time. Moreover, Seeed Studio XIAO nRF52840 supports the USB Type-C interface which can supply power and download code. It also has rich On-chip Memory of 1 MB flash and 256 kB RAM, and an Onboard Memory of 2 MB QSPI flash. There are 11 digital i/o that can be used as PWM pins and 6 analog i/o that can be used as ADC pins. It supports UART, IIC, and SPI all three common serial ports. 1 Reset button, 1 3-in-one LED, 1 Charge LED, and 1 Bluetooth antenna are on board, allowing developers to debug their code very easily.

The powerful performance makes it perfect for machine learning applications, and the tiny size allows it to be used in wearable devices and Internet of Things projects, not just for prototypes but the mass production. Furthermore, Seeed Studio XIAO nRF52840 is friendly to the communities for its strong software compatibilities, which supports Arduino, Micropython, and CircuitPython. Except for the software, flexible I/O allows it to speak to almost any external device.

Specification

To better support IoT and TinyML AI projects, there is an advanced version "Seeed Studio XIAO nRF52840 Sense" that carries an extra 6-axis IMU and a PDM microphone.

Pro e contro

• Sustainably produced
• Ideal for everyday use
• May discolor in direct sunlight