Speeduino Teensy (ARM) adapter board preview

A quick demonstration of switching between a standard Arduino Mega 2560 and the Teensy 3.5 board on Speeduino. The code used on the two boards is the same standard Speeduino firmware which can be cross compiled (Either using PlatformIO or the standard Arduino IDE) to run on either board. The tune on both boards is also identical, running from exactly the same TunerStudio project.