Robot Odyssey

[pfg@yallara.cs.rmit.EDU.AU (Paul Francis Gilbert)]

After the recent Robot Odyssey discussions, I decided to finally go back and
try to finish the game. And I am, once again stuck on that bloody sonic lock
puzzle.

As far as I can see, I'm meant to make my antanna beep twice, quick pause,
beep once, quick pause, and then repeat.

It's not too difficult to set up a basic clock of a NOT gate and a few gates
added in for delay which which will cause a 2-antanna beep, but then you get
a two unit pause, which doesn't work. 

I've mucked around with using a count to N chip to try and set up a sequence,
but this is too slow. Can anyone remember just what sort of setup they used
to defeat the lock. Any suggestions would help.


--
Paul Gilbert           | pfg@yallara.cs.rmit.edu.au (The DreamMaster)
Bach App Sci, Bach Eng | The opinions expressed are my own, all my own, and
Year 4, RMIT Melbourne | as such will contain no references to small furry
Australia	       | creatures from Alpha Centauri.