Code:
on *:text:bleep:#: {
  var %o $me
  nick R2D2
  .notice $nick bleep
  nick %o
}
Is your original code. If you want to add timers to the individual tasks, just put
Code:
timer 1 2 nick R2D2
etc. The 1 showing how often you want to repeat this task, and the 2 showing how long it'll take between each repeat.
If you want others to know of the bleep as well you'll want to use
Code:
msg # bleep
instead. You can also use stuff like
Code:
describe # starts bleeping uncontrollably at $nick $+ .
to make a description of the event rather than a message.