/**
  \example alarm2.cpp 

  This sketch demonstrates using alarms to create repeating events,
  rather than just one-shots.  It uses three different alarms to flash
  the RGB LED's each at a different rate, from 1.234 seconds to 3.456
  seconds.

  To make a repeating event, one simply uses #Alarms.set() to reset
  the alarm, from inside the alarm handler.  Now, recall that to set
  an alarm, you need to know which alarm number you want to set.  Well
  conveniently, when \e inside an alarm handler, you can call
  #Alarms.currentAlarmNumber() to find out what alarm number caused
  this alarm handler to execute.

 */
