Are you ready? Really ready? Cause here comes the fastest, most powerful Metro ever. The Adafruit Metro M4 featuring the Microchip ATSAMD51. This Metro is like a bullet train, with its 120MHz Cortex M4 with floating point support. Your code will zig and zag and zoom, and with a bunch of extra peripherals for support, this will for sure be your favorite new chipset.To start off our ATSAMD51 journey, we decided to kick it off with the classic 'Arduino-compatible' shape and pinout you know and love. This Metro is the same size as the...