Adafruit Matrix Portal M4

Overview

The Adafruit Matrix Portal M4 is a compact add-on board that plugs directly into the back of any HUB75-compatible RGB LED matrix panel (16×32 to 64×64 pixels), instantly giving it WiFi internet connectivity and a powerful microcontroller for dynamic content. The ATSAMD51J19 ARM Cortex-M4F at 120MHz with 512KB flash and 192KB SRAM drives matrix refresh while the ESP32 WiFi coprocessor handles all network communication with TLS/SSL independently.

The board features a USB-C connector for power and programming, a STEMMA QT I2C port for plug-in sensors, a JST 3-pin connector for analog output or NeoPixel control, a LIS3DH accelerometer for orientation detection, and a NeoPixel status LED. Two user buttons plus a reset button are included. Power for both the Matrix Portal and the LED matrix panel is supplied via a standard 5V USB-C input, which is shared with the panel's HUB75 connector.

CircuitPython and Arduino are both supported. Adafruit provides an extensive learn guide with examples for scrolling text, real-time weather, clocks, sports scores, and more. An "Address E" jumper enables 64×64 matrix compatibility. Dimensions are 63.3mm × 44.5mm × 16mm.