I'm getting my feet wet with microcontrollers

• based off of an Arduino Due.

• based off of an Arduino Uno

Aka documented toe stubbing.

• Add a Logic Level Converter - Bi-Directional https://www.sparkfun.com/products/12009 to the serial bus. AVR speaks 5v, ARM speaks 3.3v

When booting, hold down key chords to enter cheat codes:

• Mark: WIDE Doubles the amount of notes in the sequencer
• Rub: SSH! Sends MIDI All Off
• Up: LONG Bumps max sustain to 4 seconds
• Play: NUM! Shows scale number instead of squares
• D: TTL! Send data to sequencer over the Arduino's TTL lines
• C: SHFT Hold down mark while pressing a note, it will be an octave higher
• E: BPM! Show sustain's BPM on the LCD