Re: Jog Wheel

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

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
 
On Wed, Jun 05, 2002 at 03:30:46AM -0400, William Scalione wrote:
> 
>  
>  ----- Original Message -----
>  From: John Sheahan <jrsheahan-at-optushome.com.au>
>  To: Multiple recipients of list <emc-at-nist.gov>
>  Sent: Monday, June 03, 2002 4:31 PM
>  Subject: Re: Jog wheel
>  
> 
> >
> > I have a board based on a pic 16f826 that does this.
> > I've got the software writen too, might need to be tweaked
> >
> > probably $US10 worth of parts + the board.
> > protoel database available, or I can get a panel made at nomainl
> > cost if any interest.
> >
> > john
> 
> 
> 
> John,
> 
> Will the PIC connect directly to the encoder on this board and output
> RS232? Is there room for a few switch inputs? 
> 
> If so, this sounds like a good way to go to me. I'm sure RS232 will be
> around for a few years anyway. If we go this way put me down for at 
> least a couple of boards. Would it be simple enough to wirewrap on a
> proto board if not enough folks want to buy the boards?  Anyone else
> interested? Got a schematic?
> 
> Thanks,
> Bill
> 
>