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ATOM Matrix, which has a size ofonly 24 * 24mm, is the most compact development board in the M5Stack development kit series. It provides more GPIO pins and is very suitable for handy and miniature embedded device development. The main control adopts theESP32-PICO-D4chip, which comes integrated withWi-Fitechnologies and has4MBof integrated SPI flash memory. The Atom board provides an Infra-Red LED along with the5 * 5 RGB LED matrixon the panel, a built-inIMU sensor (MPU6886), and a HY2.0 interface. A general purpose programmable button is provied below the RGB Led matrix to enable users to add input support to their various projects. The on-board USB interface (Type-C) enables rapid program uploading and execution. One M2 screw hole is provided on the back for mounting the board.

Note: When using FastLED lib, the recommended brightness of RGB LED is 20. Please do not set it to a high brightness value to avoid damage to the LED and acrylic screen. (In ATOM lib, we have mapped its appropriate brightness range to 0~100)

Product Features

  • ESP32 PICO-based

  • Programmable button

  • 5 * 5 RGB LED matrix panel(WS2812C)

  • Buitl-in Infra-red LED

  • Built-in MPU6886 Inertial Sensor

  • Extendable Pins & Holes

  • Program Platform:


  • 1x ATOM Matrix


  • Internet of things terminal controller

  • IoT node

  • Wearable peripherals





240MHz dual core, 600 DMIPS, 520KB SRAM, Wi-Fi



Power Input

5V @ 500mA


TypeC x 1, GROVE(I2C+I/0+UART) x 1

PIN Port

G19, G21,G22,G23,G25, G33


WS2812C 2020 x 25




Infrared transmission


Custom button x 1


2.4G 3D Antenna

Operating Temperature

0°C to 60°C

Net weight


Gross weight


Product Size


Package Size


Case Material

Plastic ( PC )


This tutorial will show you how to control ATOM devices through the UIFlow graphical programming platform
This tutorial will show you how to program and control ATOM devices through Arduino IDE
This tutorial will show you how to control ATOM devices through Micropython programming
A modular Wi-Fi smart thermostat that doesn't need you to maintain any infrastructure: deploy it everywhere, integrate with everything.
Use your ATOM Matrix to receive text via MQTT and scroll it on the RGB LEDs.
Using M5StickC on RoverC and JoyC with M5Atom attached to display direction of the RoverC.
Simple MicroPython code for the ATOM 5 x 5 LED matrix and its built-in MPU6886 accelerometer. It works with the M5StickC + NeoFlash Hat.
A simple ESP-Now doorbell using an M5Stack Atom Matrix and Core2 controller.
A device which can detect voice commands and takes action.
A very simple game for the M5 ATOM. The unit must be tilted to the right or left depending if more red or more green pixels are displayed.
Wall clock shows time on two concentric NeoPixel LED rings. The inner ring shows the hours, the outer ring shows minutes and seconds
This is a project that uses Atom Matrix to customize shortcut keys, which is convenient for users to set key combinations
Here is a small thing that can help to use more electricity when it is produced by renewable sources.
A non-invasive solution for hot flashes during menopause using machine learning
We aim to realize a 1-axis attitude control module (inverted pendulum).
This year's Christmas, I decorated the tree with M5Stack devices.

Official ATOM Matrix ESP32 Development Kit Built-In MPU6886 ESP32 Pico-Based Int

SKU: b578d7d3-f99d-4ce4-9f25-7768474d3259
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