Re: Jog Wheel

[John Sheahan <jrsheahan-at-optushome.com.au>]

Bill

I'd be interested to see the results.
plated thru holes are tricky this way, but  there are only 
few vias on the board, so its possible. note the PIC should 
be in a socket, as reprogramming is likely to happen. and 
soldering  the socket pins on the top also is hard but possible.

the people I usually get to do my baords charge me $400 (AUD, about 
$200 green dollars) for a 10x16 inch panel, this board appears to be 3
x 3.4 inch so I guess thats 15 boards or about $15 per board in small 
qty.    Is the setup and effort worth it?  I get pth, solder resist
and silkscreen too.

I'm going to be offsite for 2 weeks, send me an adress and I'll mail
you a blank boards for slave2 and a pic programmer.  
See how practical you think it is.   

Also , when I get back I could rework the pcb a bit to 
leave off the unused stuff, making it smaller and probably less 
vias and top layer tracking.

I send a protel database to the pcb folk, would take me longer than I
have today to remember how to extract gerber from the database.
Assuming you don't have protel99?

John
 





On Wed, Jun 05, 2002 at 01:32:49PM -0400, William Scalione wrote:
> 
> John, 
> 
> Thanks, got the schematic. If you can, could you  send along a 
> graphic of the board in postscript format? I could try to machine
> a few boards, I've never done it but I have an engraving head
> on my machine that I can limit the depth on. Should work I would
> think. If it does I'll make up a bunch and send you a few.
> 
> Bill
> 
> 
> > 
> > Hi Bill
> > 
> > I use a small board (well, 75x85 mm, d/s thru hole)
> > which I load in different ways for different things.
> > 
> > in this application it provides 11 io and the RS232.
> > (leaving out the adc and rs422 stuff)
> > that means the PIC, a 4Mhz crystal, a max202cpe 
> > and a 7805 gets loaded, plus a sprinkling of R and C.
> >  
> > the opto is two inputs, so 9 remain for whatever.
> > 
> > I an mail you a circuit, does someone have a web page handy 
> > so I don't swap peoples inboxes?
> > 
> > I probably have only 3 or 4 blank boards spare right now, 
> > so I'd need to get more done next time I do pcb's.
> > 
> > Sure it could be built on perfboard or wrapped.  
> > but a pcb is nicer and tends to be more reliable.
> > 
> > Only real work will be adjusting the oftware, my current code 
> > spits out NMEA strings.   
> > 
> > John
> 
>