I have the residue of the Cat 5 that I bought when we connected the Webserver to the Office Router. I don't have any Cat 5 connectors and (I believe) that the ones that you may have left are very hard to make up and make unreliable connections when you've done it.
Perhaps we should get some of these viewtopic.php?f=15&t=136.
We will need the bigger switch to connect the Gate Valve that I'm currently building. (Unless we cascade two switches.) What kind of design effort is needed?
I'll be in tomorrow morning partly to bring in the stuff that I've completed (including the 'iffy' probe) and partly to discuss the way forward for the Software Framework with Hamish. I'll see you then.