For instance, Adafruit has provided the files needed for the ESP8266, which recently received the Arduino treatment.

Arduino has been used to control a stepper motor driver a MIDI interface, scanner parts and basic keyboard to great effect, check out the video below to learn more. Watch this video on YouTube.

YouTube user Alex otherwise known as Glacial Geyser published instructions this month on how to create your very own DIY Arduino powered MIDI controller completely from scratch.