MasterYewAye: Sleep more than once

Signed-off-by: Chris Evich <chris-arduino@anonomail.me>
MasterYewAye: Minor cleanups

Signed-off-by: Chris Evich <chris-arduino@anonomail.me>
MasterYewAye: Separated power up/down by device

Signed-off-by: Chris Evich <chris-arduino@anonomail.me>
MasterYewAye: Added 12h SMA

Signed-off-by: Chris Evich <chris-arduino@anonomail.me>
Add submodule for arduino-cmake

Signed-off-by: Chris Evich <chris-arduino@anonomail.me>
Added git ignore

Signed-off-by: Chris Evich <chris-arduino@anonomail.me>
Added SerialUI external library

Signed-off-by: Chris Evich <chris-arduino@anonomail.me>