M5Stack ATOM Matrix ESP32 Development Kit

The ATOM Matrix from M5Stack is a development board with ESP32-PICO-D4 in a housing of only 24 × 24 mm. It has a 5 × 5 RGB LED matrix, an MPU6886 motion sensor with 3-axis accelerometer and 3-axis gyroscope, an infrared transmitter and a button under the matrix. It is programmed via USB-C with the Arduino IDE, UiFlow, MicroPython or ESP-IDF.

Important: Operate the LED matrix at low brightness. M5Stack recommends a value of 20 with the FastLED library. Excessive brightness generates heat and can damage the LEDs and the cover.

Recommended Accessories:

• 0.5m USB 2.0 Type-C Cable black 66W
• 10cm M5Stack Grove Cables 5 Pieces
• M5Stack 1 to 3 HUB Unit

Features:

• ESP32-PICO-D4, dual core up to 240 MHz, 2.4 GHz Wi-Fi and Bluetooth
• 5 × 5 RGB LED matrix with 25 WS2812C LEDs
• MPU6886 motion sensor, I2C address 0x68
• Programmable button under the matrix, pressed via the cover
• Infrared transmitter, reset button
• Grove connector HY2.0-4P with G26 and G32
• 6 GPIOs on the 2.54 mm female header: G19, G21, G22, G23, G25, G33
• M2 threaded hole on the back for mounting

Application Examples:

• IoT nodes and sensors on Wi-Fi
• Displaying symbols and states on the LED matrix
• Orientation and motion detection
• Infrared remote control for devices

Documentation:

• Atom-Matrix: description, pinout and examples (M5Stack)
• M5Atom library with examples (M5Stack, GitHub)

Technical Data:

• Manufacturer: M5Stack
• SoC: ESP32-PICO-D4, Xtensa LX6 dual core up to 240 MHz
• Flash: 4 MB
• SRAM: 520 kB
• Wireless: Wi-Fi 802.11 b/g/n 2.4 GHz, Bluetooth (BLE and Classic)
• Supply: USB-C, 5 V, 500 mA
• Logic level: 3.3 V
• GPIO: G19, G21, G22, G23, G25, G33, Grove G26 and G32
• LED: 25× WS2812C 2020, on G27
• IMU: MPU6886, I2C 0x68, SCL G21, SDA G25
• Button: G39
• Infrared transmitter: G12
• Operating temperature: 0 to 60 °C
• Dimensions: 24 × 24 × 13.8 mm
• Weight: 7.3 g

Scope of Delivery:

• 1× M5Stack ATOM Matrix ESP32 Development Kit