SparkFun Thing Plus Matter - MGM240P

The SparkFun Thing Plus Matter is the first easily accessible board of its kind that combines Matter and SparkFun’s Qwiic ecosystem for agile development and prototyping of Matter-based IoT devices. The MGM240P wireless module from Silicon Labs® provides secure connectivity for both 802.15.4 with Mesh communication (Thread) and Bluetooth® Low Energy 5.3 protocols. The module comes ready for integration into Silicon Labs' Matter IoT protocol for home automation. SparkFun's Thing Plus development boards are Feather-compatible and include a Qwiic connector for easy integration into our Qwiic Connect System for solderless I2C circuits.

Matter and Arduino logos
Arduino Core Now Available! In a groundbreaking development for IoT enthusiasts and professionals alike, Arduino and Silicon Labs (SiLabs) have announced a collaboration that promises to revolutionize access to the Matter protocol. On January 9, 2024 a user-friendly Arduino library tailored for Matter was released as the first phase of this collaboration.

What is Matter? Simply put, Matter allows for consistent operation between smart home devices and IoT platforms without an Internet connection, even from different providers. In doing so, Matter is able to communicate between major IoT ecosystems in order to create a single wireless protocol that is easy, reliable, and secure to use.

The Thing Plus Matter - MGM240P includes Qwiic and LiPo battery connectors, and multiple GPIO pins capable of complete multiplexing through software. The board also features the MCP73831 single-cell LiPo charger as well as the MAX17048 fuel gauge to charge and monitor a connected battery. Lastly, we've included a µSD card slot for any external memory needs.

The MGM240P wireless module is built around the EFR32MG24 Wireless SoC with a 32-bit ARM Cortext-M33 core processor running at 39 MHz with 1536 kb Flash memory and 256 kb RAM. The MGM240P works with common 802.15.4 wireless protocols (Matter®, Zigbee®, and OpenThread®) as well as Bluetooth® Low Energy 5.3. The MGM240P supports Silicon Labs' Secure Vault for Thread applications.

The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.

  • MGM240P Wireless Module
    • Built around the EFR32MG24 Wireless SoC
    • 32-bit ARM-M33 Core Processor (@39MHz)
    • 1536kB Flash Memory
    • 256kB RAM
    • Supports Multiple 802.15.4 Wireless Protocols (Zigbee and OpenThread)
    • Bluetooth Low Energy 5.3
    • Matter-ready
    • Secure Vault Support
    • Built-in Antenna
  • Thing Plus Form-Factor (Feather-compatible):
    • Dimensions: 2.30" x 0.9"
    • Two Mounting Holes:
      • 4-40 screw compatible
    • Twenty One GPIO PTH Breakouts
      • All pins have complete multiplexing capability through software
      • SPI, I2C and UART interfaces mapped by default to labeled pins
      • Thirteen GPIO (Six labeled as Analog, seven labeled for GPIO)
        • All function as either GPIO or Analog
      • Built-in-Digital to Analog Converter (DAC)
    • USB-C Connector
    • 2-Pin JST LiPo Battery Connector for a LiPo Battery (not included)
    • 4-Pin JST Qwiic Connector
    • MC73831 Single-Cell LiPo Charger
      • Configurable charge rate (500mA Default, 100mA Alternate)
    • MAX17048 Single-Cell LiPo Fuel Gauge
    • µSD Card Slot
    • Low Power Consumption (15µA when MGM240P is in Low Power Mode)
  • LEDs:
    • PWR - Red Power LED
    • CHG - Yellow battery charging status LED
    • STAT - Blue status LED
  • Reset Button:
    • Physical push-button
    • Reset signal can be tied to A0 to enable use as a peripheral device

SparkFun Thing Plus Matter - MGM240P Product Help and Resources

SparkFun Thing Plus Matter - MGM240P Hookup Guide

March 2, 2023

Get started with the SparkFun Thing Plus Matter - MGM240P with this Hookup Guide. This guide covers the hardware on this development board along with a quick intro to using the board with Silicon Labs' Simplicity Studio IDE.

Connecting Thing Plus Matter to Google Nest Hub

March 30, 2023

Connect your Thing Plus Matter board to a Google Nest Hub, as well as the Google Home app, and set up as a light device!

Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

4 Programming

Skill Level: Experienced - You will require a firm understanding of programming, the programming toolchain, and may have to make decisions on programming software or language. You may need to decipher a proprietary or specialized communication protocol. A logic analyzer might be necessary.
See all skill levels

Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

3 Electrical Prototyping

Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
See all skill levels


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • romkey / about a year ago / 3

    This looks really neat, but I'm disappointed that you decided to call it the "SparkFun Thing Plus Matter" - "SparkFun Thing Plus Thread" would be a much more accurate name. Or "SparkFun Thing Plus Thread/Zigbee", albeit somewhat cumbersome.

    A lot of people are confused about the difference between Matter and Thread. Matter is a software protocol suite that runs over Thread, WiFi and Ethernet, very similarly to the way Apple's HomeKit does (in fact, Matter is in some ways an evolution of HomeKit designed to work with multiple frameworks and with multiple simultaneous controllers). You can run Matter on this board but you can also run it on any Sparkfun ESP32 board, and on a number of other CPUs. The distinguishing quality of this board is that it has a Thread radio, not that it can run Matter applications. Likewise you could run non-Matter TCP/IP applications over Thread, or you could build a Zigbee sensor node with this board, which also wouldn't involve Matter.

    Matter also isn't unique to Silicon Labs; they don't own it nor did they write the implementation that runs on this CPU. Matter originates from the Connectivity Standards Alliance which Silicon Labs is a member of, along with hundreds of other companies. Their implementation of Matter is the reference and only implementation, available on Github.

    So, cool board, but the name you chose is going to further confuse people who are already confused.

  • grobas / last year / 1

    This is a great board! Apart from running Matter code, it can also be used for Zigbee, Openthread, BLE and other "non-proprietary" software like the Silicon Labs Flex/Connect stacks.

Customer Reviews

2.8 out of 5

Based on 6 ratings:

Currently viewing all customer reviews.

3 of 3 found this helpful:

Currently Beyond my abilities!

I believe this device has excellent potential, but after spending several days trying to figure out how to use it, I am giving up for now. I was able to get the Blink working but adding a sensor or figuring out how to use Silicon Labs' Simplicity did not go well for me. I tried to follow tutorials and my Simplicity did not match the Tutorials and I could not find out how to make it look the same. So it goes on the back burner. I may have discovered my ability limit! I obviously tried the step by step that was provided but again, it did not match the tutorial for setting it up. I am not sure if providing several working projects that could be directly loaded into my Simplicity would help or not.

1 of 1 found this helpful:


I really really wanted this device to work. And when it first arrived I was able to get it to work exactly ONCE on my home automation network. And that was with a great deal of digging and reading and searching for examples. Once I started trying to develop my own application, the whole thing went off the rails and I was never even able to return to the original working example I DID manage to get working. The Simplicity Studio is a confusing pain to use with way too many bells and whistles for the hobbyist. And with subsequent updates it is now too far afield from the original example and the original documentation is woefully out of date.

So imagine my excitement when it was announced that there was going to be an Arduino library. I immediately decided I would "slum it" and attack this thing from a more simplistic environment. But after setting everything up and following the examples, I couldn't even get the simple blink program to work on one unit and on my backup unit I couldn't even get the thing to recognize the board. And so I'm at a loss here ... two boards that I was hoping to be able to start working on some of my own home automation that will instead get shoved in a box and forgotten about.

Normally Sparkfun is really good with supporting their products. And I fully recognize that Matter is a new protocol and as such is changing quickly making it hard for the casual coder to keep up. And I appreciate that the Arduino library is an attempt to bring this board to the masses. But I still can't get the thing to work ... at the end of the day that's what I need.

The Arduino core is still very new and should be improving shortly; hang tight!

1 of 1 found this helpful:

Amazing little board for all things IoT!

This board is an excellent platform for testing wireless connectivity and developing / prototyping IoT projects. The board seamlessly integrates into Silicon Labs' Simplicity Studio 5, which offers a comprehensive suite of example applications for things like BLE and Matter.

Arduino is also supported and the most amazing thing is that in Arduino you can mix and match Arduino code with Silabs' own Bluetooth API so if you are familiar with that you can create a plethora of cool applications. I will definitely be using this board in my upcoming hobby projects.

4 of 5 found this helpful:

Not useful without a certificate

I wanted to use this with my Amazon Alexa devices, but it does not come with the required certificate. There doesn't seem to be anywhere to get help to generate a test certificate. The Sparkfun tutorial only has a Google hub example, so I haven't been able to use this board. I have two of these that are basically worthless. I wonder if I can get an RMAs for them.

3 of 4 found this helpful:

Good hardware, crap software

Hardware design is spot on, but the SILabs software is a mess with very poor support for a newcomer. Although they talk about ease of use, the hardware debugging tools are difficult to locate or setup for the required setup codes. The sparkfun tutorial so far is a basic blink the LED kind which does nothing for setting up the encryption or radio pairing required as part of matter. For the average hardware guy, I’d avoid this without an expert on eclipse handy to answer questions and run you through the basics of using the software and setting up everything.

Nice MGM240P device but looking for good example code

Please add link to demo code for this board

There are a few; click on the 'Documents' tab on this page for the Hookup Guide, Connecting Thing Plus Matter to Google Nest Hub Guide, and Using Simplicity Studio with Matter Guide