# Nano Matter **URL:** https://forum.arduino.cc/c/official-hardware/nano-family/nano-matter/195.md [Latest](https://forum.arduino.cc/latest.md) · [Categories](https://forum.arduino.cc/categories.md) --- ## [How to get the best out of this forum](https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/1277340)
**Author:** [@system](https://forum.arduino.cc/u/system)\ **Replies:** 0\ **Last updated:** [July 1, 2024, 7:22pm UTC](https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/1277340 "2024-07-01T19:22:06Z")
Welcome to the Arduino forum! A guide explaining how to get the best out of this forum is available at the link below. Please read it: --- ## [About the Nano Matter category](https://forum.arduino.cc/t/about-the-nano-matter-category/1277337)
**Author:** [@system](https://forum.arduino.cc/u/system)\ **Replies:** 0\ **Last updated:** [July 1, 2024, 7:17pm UTC](https://forum.arduino.cc/t/about-the-nano-matter-category/1277337 "2024-07-01T19:17:10Z")
Discussion about the Nano Matter board. The Nano Matter is based on the Silicon Labs MGM240S microcontroller. --- ## [Thread Border Router](https://forum.arduino.cc/t/thread-border-router/1450425)
**Author:** [@chr5chu](https://forum.arduino.cc/u/chr5chu)\ **Replies:** 6\ **Last updated:** [July 2, 2026, 1:56pm UTC](https://forum.arduino.cc/t/thread-border-router/1450425 "2026-07-02T13:56:10Z")
Hello there, I want to build a custom Thread Border Router out of a Nano Matter and the Nano ESP just like the documentation has told. I'm wondering if it's possible to use the documentation just as a border router to e… --- ## [I2C on Arduino Uno and Arduino Nano Matter](https://forum.arduino.cc/t/i2c-on-arduino-uno-and-arduino-nano-matter/1449510)
**Author:** [@tonytesch](https://forum.arduino.cc/u/tonytesch)\ **Replies:** 17\ **Last updated:** [June 25, 2026, 4:18am UTC](https://forum.arduino.cc/t/i2c-on-arduino-uno-and-arduino-nano-matter/1449510 "2026-06-25T04:18:52Z")
I have the exact same code on both of these boards. The Uno works just fine, the Nano Matter does not. Does anyone have any ideas as to why? --- ## [Set analog acquisition time on Nano Matter](https://forum.arduino.cc/t/set-analog-acquisition-time-on-nano-matter/1449072)
**Author:** [@olehweres](https://forum.arduino.cc/u/olehweres)\ **Replies:** 4\ **Last updated:** [June 20, 2026, 5:35pm UTC](https://forum.arduino.cc/t/set-analog-acquisition-time-on-nano-matter/1449072 "2026-06-20T17:35:44Z")
Is there a library which would add the analogSetAcquisitionTime( ) or equivalent command to Nano Matter ? Thank you. --- ## [Nano Matter doesn't recognize Servo](https://forum.arduino.cc/t/nano-matter-doesnt-recognize-servo/1442930)
**Author:** [@ildiabolik](https://forum.arduino.cc/u/ildiabolik)\ **Replies:** 2\ **Last updated:** [May 7, 2026, 11:36pm UTC](https://forum.arduino.cc/t/nano-matter-doesnt-recognize-servo/1442930 "2026-05-07T23:36:46Z")
First time programmer here, purchased Arduino Nano Matter Discovery Kit and works fine if I use the example code. I would like to use the proximity sensor and Matter Fan example for it to rotate a continuous servo that … --- ## [Arduino Nano Matter SJ2 / external 3.3v power](https://forum.arduino.cc/t/arduino-nano-matter-sj2-external-3-3v-power/1435119)
**Author:** [@scbme](https://forum.arduino.cc/u/scbme)\ **Replies:** 5\ **Last updated:** [March 16, 2026, 9:55pm UTC](https://forum.arduino.cc/t/arduino-nano-matter-sj2-external-3-3v-power/1435119 "2026-03-16T21:55:25Z")
Hoping I can get a definitive answer regarding usb-c data and power availability if JS2 is cut with power supplied by both external 33v power (connected to board pin 3.3v) and usb is also connected with 5v power availab… --- ## [Example project using Arduino Nano Matter, Modulino Thermo and Latch Relay publishing temperature and humidity to Matter with optional relay control](https://forum.arduino.cc/t/example-project-using-arduino-nano-matter-modulino-thermo-and-latch-relay-publishing-temperature-and-humidity-to-matter-with-optional-relay-control/1434996)
**Author:** [@wshatford](https://forum.arduino.cc/u/wshatford)\ **Replies:** 0\ **Last updated:** [March 12, 2026, 6:43pm UTC](https://forum.arduino.cc/t/example-project-using-arduino-nano-matter-modulino-thermo-and-latch-relay-publishing-temperature-and-humidity-to-matter-with-optional-relay-control/1434996 "2026-03-12T18:43:16Z")
Hi everyone, I created a working example using the Arduino Nano Matter with Modulino modules. Hardware used: • Arduino Nano Matter • Nano Connector Carrier • Modulino Thermo • Modulino Latch Relay (optional) The s… --- ## [Arduino Nano Matter board revision V0.5?](https://forum.arduino.cc/t/arduino-nano-matter-board-revision-v0-5/1434701)
**Author:** [@scbme](https://forum.arduino.cc/u/scbme)\ **Replies:** 3\ **Last updated:** [March 11, 2026, 3:53am UTC](https://forum.arduino.cc/t/arduino-nano-matter-board-revision-v0-5/1434701 "2026-03-11T03:53:15Z")
Seems I was shipped the pre-production rev. of the board. Disappointing that Arduino (not a third party) shipped this product. I'll be returning given I prefer to use a current revision board for my new project. Hoping … --- ## [Is there a put/get External EEPROM library that works with Nano Matter ?](https://forum.arduino.cc/t/is-there-a-put-get-external-eeprom-library-that-works-with-nano-matter/1420588)
**Author:** [@olehweres](https://forum.arduino.cc/u/olehweres)\ **Replies:** 9\ **Last updated:** [February 6, 2026, 6:31pm UTC](https://forum.arduino.cc/t/is-there-a-put-get-external-eeprom-library-that-works-with-nano-matter/1420588 "2026-02-06T18:31:52Z")
The simulated EEPROM sketches that come with Nano Matter documentation in Arduino IDE don't work. Tried adding a 24LC256 as 2nd I2E device to my circuit, and using SparkFun\_External\_EEPROM.h. NM recognizes it and seem… --- ## [The best way and code examples to write and read from on board flash?](https://forum.arduino.cc/t/the-best-way-and-code-examples-to-write-and-read-from-on-board-flash/1425914)
**Author:** [@tony\_zhang](https://forum.arduino.cc/u/tony_zhang)\ **Replies:** 6\ **Last updated:** [January 25, 2026, 10:34am UTC](https://forum.arduino.cc/t/the-best-way-and-code-examples-to-write-and-read-from-on-board-flash/1425914 "2026-01-25T10:34:39Z")
Hi, I am new to Nano Matter. I have a user calibration data wanted to store in on board flash memory. I have googled about this. It gave me two answers with slightly different phrases. One is using FlashIAPBlockDevice … --- ## [EM1 not working](https://forum.arduino.cc/t/em1-not-working/1410733)
**Author:** [@julian99m2](https://forum.arduino.cc/u/julian99m2)\ **Replies:** 2\ **Last updated:** [January 1, 2026, 6:33pm UTC](https://forum.arduino.cc/t/em1-not-working/1410733 "2026-01-01T18:33:05Z")
Hi, I'm observing an issue trying to make my Arduino Nano Matter sleep using Silicon Labs' em-lib. I chose protocol stack: none to rule out any stack functionality interferring. Still, it seems to immediately wake up a… --- ## [Matter Low Power Modes](https://forum.arduino.cc/t/matter-low-power-modes/1422522)
**Author:** [@daedalusminos](https://forum.arduino.cc/u/daedalusminos)\ **Replies:** 3\ **Last updated:** [December 30, 2025, 2:06pm UTC](https://forum.arduino.cc/t/matter-low-power-modes/1422522 "2025-12-30T14:06:08Z")
I have a battery powered Matter application in which I need to reduce the standby current as low as possible but still retaining a relatively low (e.g. 2 secs) latency to incoming commands. The lowpower ‘sleep’ only red… --- ## [Error code efm32s2\_dci\_read\_se\_status](https://forum.arduino.cc/t/error-code-efm32s2-dci-read-se-status/1419065)
**Author:** [@kronau123](https://forum.arduino.cc/u/kronau123)\ **Replies:** 2\ **Last updated:** [December 12, 2025, 4:20pm UTC](https://forum.arduino.cc/t/error-code-efm32s2-dci-read-se-status/1419065 "2025-12-12T16:20:05Z")
Hello I tried to use the example project "Matter lightbulb example" but after sending the program the serial monitor gave me this error text: Open On-Chip Debugger 0.12.0+dev-01514-g21fa2de70 (2024-02-07-19:18) Licens… --- ## [Matter\_Contact\_Sensor demo not working with Alexa](https://forum.arduino.cc/t/matter-contact-sensor-demo-not-working-with-alexa/1413456)
**Author:** [@pm2](https://forum.arduino.cc/u/pm2)\ **Replies:** 4\ **Last updated:** [November 13, 2025, 3:43pm UTC](https://forum.arduino.cc/t/matter-contact-sensor-demo-not-working-with-alexa/1413456 "2025-11-13T15:43:21Z")
Hi, I am having trouble with the nano matter demos and Alexa. I can compile, connect the device to thread border router etc and install the device in Alexa. Alex recognises it and the the Serial monitor shows "Matter dev… --- ## [How many ADCs does Nano Matter have?](https://forum.arduino.cc/t/how-many-adcs-does-nano-matter-have/1413594)
**Author:** [@tony\_zhang](https://forum.arduino.cc/u/tony_zhang)\ **Replies:** 7\ **Last updated:** [November 12, 2025, 1:48am UTC](https://forum.arduino.cc/t/how-many-adcs-does-nano-matter-have/1413594 "2025-11-12T01:48:10Z")
This is more about hardware question, no code snippet. How many ADCs does Nano Matter have? if there are 20 ADCs available, where are they? from datasheet, it said there are 20 ADCs, however, from pinout diagram, only… --- ## [PINForRemoteOperation for Arduino Nano Matter support](https://forum.arduino.cc/t/pinforremoteoperation-for-arduino-nano-matter-support/1410055)
**Author:** [@greatoz](https://forum.arduino.cc/u/greatoz)\ **Replies:** 0\ **Last updated:** [October 20, 2025, 6:18pm UTC](https://forum.arduino.cc/t/pinforremoteoperation-for-arduino-nano-matter-support/1410055 "2025-10-20T18:18:41Z")
Can MatterDoorLock support PINForRemoteOperation for the Arduino Matter Uno. Google Home will not allow remote Door Unlock unless requirePINForRemoteOperation is set to true and a PIN is provided. --- ## [Nano Matter Oscillator is Quartz type or ceramic ?](https://forum.arduino.cc/t/nano-matter-oscillator-is-quartz-type-or-ceramic/1409055)
**Author:** [@claudiuslanc](https://forum.arduino.cc/u/claudiuslanc)\ **Replies:** 2\ **Last updated:** [October 12, 2025, 8:59am UTC](https://forum.arduino.cc/t/nano-matter-oscillator-is-quartz-type-or-ceramic/1409055 "2025-10-12T08:59:59Z")
Hi everybody, I would like to use a Nano Matter to decode a noisy DCF77 radio signal using the Udo Klein dcf77 library GitHub - udoklein/dcf77: Noise resilient DCF77 decoder library for Arduino This software requires … --- ## [Using AREF on Nano Matter](https://forum.arduino.cc/t/using-aref-on-nano-matter/1407592)
**Author:** [@olehweres](https://forum.arduino.cc/u/olehweres)\ **Replies:** 7\ **Last updated:** [October 12, 2025, 7:10am UTC](https://forum.arduino.cc/t/using-aref-on-nano-matter/1407592 "2025-10-12T07:10:09Z")
I need accurate analogRead values using my Nano Matter. Even connected to a 1.5v battery, the values fluctuate. 5v pin is unstable and noisy and 3.3v pin AWFUL. Problem most likely caused by unstable 5v internal refer… --- ## [Nano Matter Update:Got it to upload, but can't serial to get QR Code](https://forum.arduino.cc/t/nano-matter-update-got-it-to-upload-but-cant-serial-to-get-qr-code/1408181)
**Author:** [@pentius](https://forum.arduino.cc/u/pentius)\ **Replies:** 0\ **Last updated:** [October 2, 2025, 4:00am UTC](https://forum.arduino.cc/t/nano-matter-update-got-it-to-upload-but-cant-serial-to-get-qr-code/1408181 "2025-10-02T04:00:18Z")
OK, I got the computer to (finally) upload a sketchby finding on Github a file full of udev rules then reboot the computer, then tried it and it worked on my old computer. Also, got the Uno Wifi to upload on the new one,… --- ## [How to control multiple pins over Matter?](https://forum.arduino.cc/t/how-to-control-multiple-pins-over-matter/1405039)
**Author:** [@mooseonmars](https://forum.arduino.cc/u/mooseonmars)\ **Replies:** 2\ **Last updated:** [September 9, 2025, 8:55am UTC](https://forum.arduino.cc/t/how-to-control-multiple-pins-over-matter/1405039 "2025-09-09T08:55:41Z")
Hi All, I am using the Arduino Nano Matter (together with Home Assistant) and studied all the tutorials on the documentation web page. Now, there is for example the Matter Smart Relay tutorial, which shows you how to rem… --- ## [How to generate virtual buttons for Matter to control a motor?](https://forum.arduino.cc/t/how-to-generate-virtual-buttons-for-matter-to-control-a-motor/1401678)
**Author:** [@mooseonmars](https://forum.arduino.cc/u/mooseonmars)\ **Replies:** 4\ **Last updated:** [September 9, 2025, 8:27am UTC](https://forum.arduino.cc/t/how-to-generate-virtual-buttons-for-matter-to-control-a-motor/1401678 "2025-09-09T08:27:34Z")
Hi! I am not new to Arduino, but new to the Nano Matter, which I would like to use together with Home Assistant. (1) A more linguistic question upfront: Is there a commonly accepted verbal distinction between a) the ph… --- ## [Nano Matter on Apple Silicon machine without Rosetta](https://forum.arduino.cc/t/nano-matter-on-apple-silicon-machine-without-rosetta/1405361)
**Author:** [@new4fun](https://forum.arduino.cc/u/new4fun)\ **Replies:** 26\ **Last updated:** [September 4, 2025, 2:30pm UTC](https://forum.arduino.cc/t/nano-matter-on-apple-silicon-machine-without-rosetta/1405361 "2025-09-04T14:30:04Z")
Continuing the discussion from How to avoid installing Rosetta on an Apple Silicon Mac: I have followed the above instructions but it still does not work for me. Environment: IDE 2.3.7 , Apple Silicon M4 The sketch co… --- ## [Nano Matter missing from device list on Cloud App](https://forum.arduino.cc/t/nano-matter-missing-from-device-list-on-cloud-app/1403827)
**Author:** [@jasonb](https://forum.arduino.cc/u/jasonb)\ **Replies:** 1\ **Last updated:** [August 23, 2025, 12:57pm UTC](https://forum.arduino.cc/t/nano-matter-missing-from-device-list-on-cloud-app/1403827 "2025-08-23T12:57:13Z")
Hi, I'm trying to select the Arduino Nano Matter device from the drop down list while using the cloud app, but it isn't on the list. Any idea what to do from here? --- ## [How to install Arduino Nano Matter core on ARM64 Linux (Raspberry Pi 5)?](https://forum.arduino.cc/t/how-to-install-arduino-nano-matter-core-on-arm64-linux-raspberry-pi-5/1399248)
**Author:** [@flynntheavatar](https://forum.arduino.cc/u/flynntheavatar)\ **Replies:** 8\ **Last updated:** [August 2, 2025, 4:42pm UTC](https://forum.arduino.cc/t/how-to-install-arduino-nano-matter-core-on-arm64-linux-raspberry-pi-5/1399248 "2025-08-02T16:42:44Z")
Hi all, I'm trying to install the Arduino Nano Matter core (SiliconLabs:silabs) on my Raspberry Pi 5 running ARM64 Linux. However, I keep running into issues across different methods: Using arduino-cli core install Sil… --- ## [Matter Silicon Labs Multiple Lightbulbs](https://forum.arduino.cc/t/matter-silicon-labs-multiple-lightbulbs/1398589)
**Author:** [@chr5chu](https://forum.arduino.cc/u/chr5chu)\ **Replies:** 11\ **Last updated:** [August 1, 2025, 8:54am UTC](https://forum.arduino.cc/t/matter-silicon-labs-multiple-lightbulbs/1398589 "2025-08-01T08:54:32Z")
Hello there, I've got a problem with a Nano Matter Board from Silicon Labs. I tried to get 10 dimmable Matter lightbulbs. Every lightbulb is controlled with a transistor. The transistors ab triggered by the arduino. Eve… --- ## [Nano Matter as I2C Peripheral Sender](https://forum.arduino.cc/t/nano-matter-as-i2c-peripheral-sender/1393851)
**Author:** [@flynace](https://forum.arduino.cc/u/flynace)\ **Replies:** 8\ **Last updated:** [July 9, 2025, 12:08am UTC](https://forum.arduino.cc/t/nano-matter-as-i2c-peripheral-sender/1393851 "2025-07-09T00:08:38Z")
I am trying to use a Nano Matter as a Peripheral Sender but it isn't working following code similar to the examples in the Inter-Integrated Circuit (I2C) Protocol and Wire library documentation. This is the Controller R… --- ## [How to: create Matter device with temp and humidity?](https://forum.arduino.cc/t/how-to-create-matter-device-with-temp-and-humidity/1364492)
**Author:** [@frankboddeke](https://forum.arduino.cc/u/frankboddeke)\ **Replies:** 5\ **Last updated:** [June 28, 2025, 10:59pm UTC](https://forum.arduino.cc/t/how-to-create-matter-device-with-temp-and-humidity/1364492 "2025-06-28T22:59:59Z")
hello, just got the arduino nano matter and ran through some examples (e.g. matter\_humidity\_sensor) and that all works fine now i want to make a "matter device" which measures (and publishes) temperature and humidity. … --- ## [BLE Subscribe Help](https://forum.arduino.cc/t/ble-subscribe-help/1390635)
**Author:** [@flynace](https://forum.arduino.cc/u/flynace)\ **Replies:** 1\ **Last updated:** [June 25, 2025, 8:17am UTC](https://forum.arduino.cc/t/ble-subscribe-help/1390635 "2025-06-25T08:17:28Z")
I would like to port this code that I use successfully on an ESP32-S3 to the Nano Matter... #include \ uint8\_t probeStatusData\[50\] = {}; bool CPTscanning = false; void setup() { Serial.begin(9600); Se… --- ## [Nano Matter as SPI slave](https://forum.arduino.cc/t/nano-matter-as-spi-slave/1387221)
**Author:** [@mag\_zbc](https://forum.arduino.cc/u/mag_zbc)\ **Replies:** 0\ **Last updated:** [June 6, 2025, 4:42pm UTC](https://forum.arduino.cc/t/nano-matter-as-spi-slave/1387221 "2025-06-06T16:42:49Z")
I want to use Nano Matter as an SPI Slave, but I cannot find any reference material anywhere. I cannot use the SPI library since it doesn't support the slave mode. I want to have a setup where a bunch of Arduinos are co… [Next page](https://forum.arduino.cc/c/official-hardware/nano-family/nano-matter/195.md?page=1)