Steven Kosmerchock wrote:
>
>  I know this has been mentioned before, I looked at the archive and I don't ha
ve
>  lots of free time on my hands. All I need to know is what will it take to com
mu
> nicate to a PIC with a PC. I just need to transmit signals to the PIC via PC.
I
> DON'T need the PIC to talk to the PC. Do I need a rs-232 ic  or what?? I'm new
 t
> o this and am not sure what it will take. Any advise and suggestions would be
ap
> precited!!!!
>                         Thank you for your time,
>                         Steven Kosmerchock
>
> email:  steve.kosmerchock@celwave.com

In order to do this reliably you need to do a ttl to rs232 level
conversion.
Get a MAX232 chip and 5 10uf electrolytic capacitors (actually I've seen
circuit diagrams with anything from 1 uf to 22 uf in them... I've used
the
10s and they work).  Check out www.maxim-ic.com for the data sheets on
the
232 to show how to hook them up.  I've done a number of these and
they've
worked reliably every time.

John Hansen, W2FS
hansen@fredonia.edu