ATOM Matrix is a miniature development board in the M5Stack ecosystem, measuring just 24×24mm. Its compact size makes it ideal for handheld gadgets and embedded applications. Powered by the ESP32-PICO-D4 with built-in Wi-Fi and 4MB SPI flash, it ensures stable connectivity and sufficient storage. The board integrates IR LEDs, a 5×5 RGB LED matrix for dynamic visual output, plus an onboard MPU6886 IMU sensor and HY2.0 interface for motion detection and peripheral expansion. A programmable button and Type-C USB port further streamline development. Key Features Compact design based on ESP32-PICO Customizable programmable button 5×5 RGB LED matrix (WS2812C) for vivid lighting effects Integrated MPU6886 inertial sensor for motion tracking Compatible with multiple platforms: Arduino, UIFlow Package Contents 1 × ATOM Matrix module Typical Applications IoT terminal controller Lightweight IoT node Wearable or portable peripherals Technical Specifications Resources Details Processor ESP32, dual-core 240MHz, 600 DMIPS, 520KB SRAM, Wi-Fi enabled Flash Memory 4MB Power Supply 5V @ 500mA Interfaces 1 × USB Type-C, 1 × GROVE (I2C + I/O + UART) GPIO Pins G19, G21, G22, G23, G25, G33 RGB LED 25 × WS2812C 2020 LEDs Sensor MPU6886 IMU Infrared IR transmission support Button 1 × programmable button Antenna 2.4GHz 3D antenna Operating Temperature 0°C – 60°C Net Weight 3g Gross Weight 14g Product Dimensions 24 × 24 × 14mm Package Dimensions 43 × 43 × 20mm Enclosure Material PC plastic
