Analogue-sequencer

> I have found some build instructions at 
> <http://www.sequentix.com/build/old/p3-build.htm>.  Thanks 
> for leaving these up :)  Are these the best to use?  

Best and only !
 
> 1) Are these build instructions pretty up to date, are there 
> gotchas I should be aware of.

I can't remember as far back as the v1.3 boards.
They didn't change by much though.

> 3) The software I have is probably pretty achaic, is there a 
> way to update the part I have, if not is there still a source 
> for this part (or is the firmware available somewhere for 
> burning a new part?)

All the necessary update files are available for download from Yahoo files
or the Sequentix site.
Might be best to leave worrying about the firmware level until you have
built it ;-)

> 4) are there any "problem" parts that have gone out of production

The PLED displays, and the main CPU are no longer available.
You can use an LCD. Be careful with the CPU...

> 5) I remember some discussion around getting front panels 
> made.  Is there a file for this, for the version of the boards I have.

There are some files about, but you may need to modify to suit the type of
key caps you use.

> 6) which parts are best socketed?

On a one-off DIY thing, I'd socket everything.
Aside from anything else, it makes troubleshooting much simpler.

> 8) Does anyone in the US have any recommendations about 
> switches to use, are the Maplin switches sill available?

The Maplin switches aren't available.
I think you can use standard tact switches with those boards, you are spoilt
for choice in key caps for those.
 
> I'm really looking forward to getting this together.  Kids 
> seem to be a time warp, eh?

Aye.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com