Adafruit Metro M4 Express AirLift
Overview
The Adafruit Metro M4 Express AirLift is a powerful development board featuring the ATSAMD51 Cortex-M4 microcontroller running at 120MHz. It integrates an ESP32-based AirLift WiFi co-processor to handle networking tasks, offloading TLS/SSL and socket management from the main MCU. This board follows the Arduino Uno form factor while providing significantly more processing power, 512KB of Flash, and 192KB of RAM.
Why Choose This Part
It offers a high-performance 120MHz clock speed and a dedicated WiFi co-processor, ensuring that networking overhead does not stall time-critical application code. The board includes 512KB of Flash and 192KB of RAM, providing ample space for complex CircuitPython or Arduino projects without the memory constraints of 8-bit platforms.
Applications
Getting Started
Developers can use the Arduino IDE or CircuitPython to program the board via its native USB port. For advanced debugging, the SWD headers are accessible, and Adafruit provides extensive libraries for managing the AirLift WiFi module and the onboard NeoPixel.
Also Consider
Arduino
- A much smaller form factor with integrated WiFi and Bluetooth, though with a slower 48MHz SAMD21 processor.
