The ATOM Matrix is the most compact development board in the M5Stack series, measuring only 24 x 24mm. It features the powerful ESP32-PICO-D4 chip with integrated WiFi, Bluetooth®, and 4MB of SPI flash memory. This tiny powerhouse provides more GPIO pins, making it ideal for embedded device development.The board includes a 5x5 RGB LED matrix panel, an infrared LED, a built-in MPU6886 IMU sensor, and a Grove/Stemma-compatible JST 2-PH interface. A programmable button is conveniently located below the LED matrix for user input. It is powered via a USB Type-C port and includes a mounting hole for easy installation.Note that this product is the ATOM Matrix board only; no additional cables or batteries are included.Features ESP32 PICO-based chip with WiFi and Bluetooth® Programmable button for versatile input 5x5 WS2812B RGB LED matrix panel Infrared transmission LED MPU6886 IMU sensor Extendable pins and mounting holes Programming platforms: Arduino, UIFlow Technical Specifications Processor: ESP32 240MHz dual-core, 600 DMIPS, 520KB SRAM, dual-mode Bluetooth® Flash Memory: 5MB Power: 5V @ 500mA via USB-C Ports: USB-C x1, Grove (I2C + I/O + UART) x1 GPIO Pins: G19, G21, G22, G23, G25, G33 RGB LEDs: WS2812B x 25 Sensor: MPU6886 IMU Infrared LED for transmission Antenna: 2.4G 3D antenna Operating Temperature: 0°C to 40°C (32°F to 104°F) Dimensions: 24 x 24 x 14 mm Weight: 14g Case Material: PC Plastic For more information, see the official M5Stack ATOM Matrix documentation.
