Description

Atom-Matrix is an ultra-compact development board in the M5Stack series, measuring only 24.0 x 24.0 mm. It offers additional GPIOs for user customization and is ideal for embedded smart-hardware projects. Powered by the ESP32-PICO-D4 with an integrated Wi-Fi module and 4 MB SPI flash, the board carries an IR transmitter, a 5 × 5 RGB LED matrix, a built-in IMU (MPU6886), and a programmable button hidden beneath the Neo-LED matrix. A USB Type-C port enables quick program upload/download, and an HY2.0-4P connector is provided for peripheral expansion. An M2 mounting hole on the back allows secure installation.

Note

When using the FastLED library, a recommended brightness value for the RGB LEDs is 20. Do not set the brightness too high, or the LEDs and acrylic panel may be damaged. (In the Atom-Matrix library, we have mapped a suitable brightness range of 0–100.) Excessive brightness or full-on operation can generate high temperatures and damage the enclosure.

Features

• ESP32-based development
• Ultra-compact body
• Built-in 3-axis gyroscope and 3-axis accelerometer (I2C Address: 0x68)
• Programmable button
• RGB LED matrix display
• Infrared transmission
• Expandable pins and interfaces
• Development Platform
  • UiFlow1
  • UiFlow2
  • Arduino IDE
  • ESP-IDF
  • PlatformIO

Includes

• 1 x Atom-Matrix

Applications

Specifications

Specification	Parameter
SoC	ESP32-PICO-D4@Dual-core processor, 240MHz
DMIPS	600
SRAM	520KB
Flash	4MB
Wi-Fi	2.4 GHz Wi-Fi
Input Voltage	5 V @ 500 mA
Host Interface	USB Type-C × 1, GROVE (I2C + I/O + UART) × 1
PINs	G19, G21, G22, G23, G25, G33
RGB LED	WS2812C 2020 × 25
MEMS	MPU6886 (I2C Address: 0x68)
IR	Infrared transmission
Button	Programmable button × 1
Antenna	2.4 G 3D antenna
Working Temp.	0 ~ 60 °C
Enclosure	Plastic (PC)
Product Size	24.0 x 24.0 x 13.8mm
Product Weight	7.3 g
Package Size	85.0 x 66.0 x 15.0mm
Gross Weight	12.6 g

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