CHIME RED II

WARNING: Tesla coils can be dangerous. This code is experimental. Don't even try to build this code unless you understand it and the coil you will control with it.

• Select Due board, exit IDE
• Edit ~/.arduino15/packages/arduino/hardware/sam/*/platform.txt, to change -Os to -O2 (TODO: test pragma override)
• Re-enter IDE, install libraries ArduinoSTL, DueTimer, FixedPonts, MIDI Library
• Define CR_UI in chime_red2.ino if running on original CHIME RED I hardware
• Change pulseWindowUs and coronaUs in constants.h to suit coil hardare (e.g. set pulseWindowUs to 700 for giant coils; coronaUs sets absolute minimum gate on time)
• Upload to CHIME RED I/II