On Thu, 13 Mar 2008 21:06:39 +0000, Owain
wrote:

geoff wrote:
Sorry, but it's an unwritten rule of DIY electronics that you HAVE to
have a 555 timer on the board (even if it's not actually connected to
anything)

Whatever did we make before we had 555s to make them with?

Automatic light switches with an ORP12, a red spot transistor and a
relay.

Frank Erskine
Be alert - the Country needs lerts.