Seeed Studio XIAO MG24 Microcontroller User Manual

1. Introduction

The Seeed Studio XIAO MG24 is a compact, high-performance microcontroller board designed for Internet of Things (IoT) and embedded applications. It integrates the Silicon Labs EFR32MG24 SoC, offering robust processing capabilities, Matter over Thread, and Bluetooth Low Energy (BLE) 5.3 connectivity. Its ultra-low-power design makes it suitable for battery-powered projects, while its Arduino compatibility ensures ease of development.

This manual provides essential information for setting up, operating, and maintaining your XIAO MG24, along with detailed specifications and troubleshooting tips.

Image 1.1: Overview of Seeed Studio XIAO MG24 key features, including Matter-Native support, low power consumption, and security features.

2. Key Features

• High Performance MCU: Silicon Labs EFR32MG24 SoC, 32-bit 78 MHz ARM Cortex-M33 with DSP instruction.
• Matter Native: Compatible with Matter over Thread and Bluetooth Low Energy 5.3, supported by the Arduino Core.
• Outstanding RF Performance: Equipped with an on-board antenna with BLE range up to 50m in open locations, with an interface for an external UFL antenna.
• Super-Low Power Design: Power consumption less than 1.95µA in sleep mode, ideal for battery-powered applications.
• Rich On-Board Resources: Includes 4MB Flash, on-board battery charging circuit, 19 GPIOs, and an LED.
• Security Encrypted On-Chip: A dedicated hardware secure engine with its own CPU enables Secure Vault functions.
• Classic XIAO Design: Thumb-size form factor (21 x 17.8mm) and single-sided mount, suitable for space-limited projects.
• XIAO Accessory Compatibility: Natively compatible with various XIAO accessory add-ons and kits.

3. Setup Guide

3.1 Physical Connection

To begin using your Seeed Studio XIAO MG24, connect it to your computer using a USB Type-C cable. The board will draw power and establish a data connection through this port.

Image 3.1: Front view of the Seeed Studio XIAO MG24, highlighting the USB Type-C port for power and data.

3.2 Software Setup (Arduino IDE)

The XIAO MG24 is compatible with the Arduino IDE. Follow these steps for initial software setup:

1. Install Arduino IDE: Download and install the latest version of the Arduino IDE from the official Arduino website.
2. Add Board Manager URL: In the Arduino IDE, go to File > Preferences. In the 'Additional Boards Manager URLs' field, add the URL for Seeed Studio boards. Refer to the official Seeed Studio documentation for the most current URL.
3. Install Board Package: Go to Tools > Board > Boards Manager. Search for 'Seeed Studio XIAO' and install the corresponding board package.
4. Select Board: After installation, go to Tools > Board > Seeed Studio XIAO and select 'XIAO MG24'.
5. Select Port: Connect your XIAO MG24 to your computer. Go to Tools > Port and select the serial port corresponding to your connected board.

3.3 Pinout and Component Overview

Understanding the pinout and on-board components is crucial for proper integration and programming.

Image 3.2: Labeled diagram of the XIAO MG24's front and back components, including USB Type-C port, reset button, LEDs, UFL antenna connector, and SWD interfaces.

Image 3.3: Detailed pinout diagram for the Seeed Studio XIAO MG24, showing digital, analog, I2C, UART, SPI, and power pins.

4. Operating Instructions

4.1 Basic Programming

Once the Arduino IDE is set up, you can write and upload sketches to your XIAO MG24. Start with simple examples like blinking an LED to verify your setup. The board's 19 GPIOs offer flexibility for connecting various sensors and actuators.

4.2 Matter, Thread, and BLE 5.3 Connectivity

The XIAO MG24 is designed for modern IoT applications, supporting Matter over Thread and BLE 5.3. Utilize the provided libraries and examples within the Arduino environment to develop connected projects. Refer to Seeed Studio's online documentation and community forums for specific guides on implementing these protocols.

4.3 Ultra-Low Power Operation

For battery-powered applications, leverage the XIAO MG24's ultra-low power capabilities. Implement sleep modes and optimize your code to minimize power consumption. The on-board battery charging circuit simplifies integration with rechargeable batteries.

4.4 Security Features

The EFR32MG24 SoC includes a hardware secure engine for enhanced security. When developing applications requiring data protection or secure boot, consult the Silicon Labs documentation for details on utilizing the Secure Vault functions.

Image 4.1: Examples of Seeed Studio XIAO applications, including Smart Home/IoT, TinyML, Robotics, and STEAM Education.

5. Maintenance

The Seeed Studio XIAO MG24 is a robust development board, but proper handling and care will ensure its longevity.

• Handling: Always handle the board by its edges to avoid touching sensitive components, especially the pins.
• Storage: Store the board in an anti-static bag when not in use to protect it from electrostatic discharge.
• Cleaning: If necessary, gently clean the board with a soft, dry brush or compressed air. Avoid using liquids or abrasive materials.
• Power Supply: Ensure you use a stable 5V power supply via the USB-C port. Incorrect voltage can damage the board.

6. Troubleshooting

If you encounter issues with your XIAO MG24, consider the following troubleshooting steps:

• Board Not Detected:
  • Ensure the USB-C cable is fully inserted and functional.
  • Check if the correct board and port are selected in the Arduino IDE.
  • Try a different USB port or computer.
  • Reinstall the board package in the Arduino IDE.
• Upload Errors:
  • Verify your code for syntax errors.
  • Ensure the correct board and port are selected.
  • Press the reset button on the board before uploading, if necessary.
• Connectivity Issues (BLE/Thread/Matter):
  • Check your code for correct implementation of communication protocols.
  • Ensure the antenna is properly connected (if using an external UFL antenna).
  • Verify that other devices are within range and properly configured.
• Power Issues:
  • Confirm the USB power source provides sufficient current.
  • If using a battery, ensure it is charged and correctly connected to the battery charging circuit.

For further assistance, refer to the official Seeed Studio documentation and community forums.

7. Specifications

The following table details the technical specifications of the Seeed Studio XIAO MG24.

Image 7.1: Seeed Studio XIAO MG24 showing its compact dimensions of 21mm x 17.8mm.

Image 7.2: Detailed product specifications table for the Seeed Studio XIAO MG24.

8. Warranty and Support

For warranty information and technical support, please refer to the official Seeed Studio website or contact their customer service directly. Online resources, including documentation, tutorials, and community forums, are available to assist with project development and troubleshooting.

Visit the Seeed Studio Store for more products and information.