>> If the pin spacing of a crystal matches the outer pins of a ceramic
>> resonator then adding the PTH for the center ground pin on the
>> resonators sounds like a pretty cool solution.
>
>OK, I'll have to look into that.  I've never used a resonator myself.  I
>guess I just haven't run into any high volume designs that needed pretty
>good but not really accurate PIC frequency.
>
>By the way, what's a "PTH"?

Resonators seem to come in 0.1" pin spacing, but I have soldered a surface
mount one onto holes.

And my input on the board - what size do you envisage? My suggestion would
be to make it a Eurocard 100x160mm (4" x 6" nominal) and have provision for
a three row DIN 41619 connector on the prototype area end. This being a 0.1"
pin spacing would fit most other connector types as well (eg IDC pin row for
ribbon cable). And have the 9 pin D connector at the other end for the
serial.

Would you see any advantage in having an FT232 and USB connector on the PCB
for those wanting to do USB without going to a USB PIC? Even if only done as
the pads, without fitting the parts, and having the connection points right
beside the ones going to the MAX232?

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist