> -----Original Message-----
> From: Chris Rocco [SMTP:crocco@CORP.EARTHLINK.NET]
> Sent: Tuesday, July 08, 2003 8:52 PM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      PC <--RS-232--> PIC18F452 <--SPI--> MAX504
>
> I want to control a DAC from my PC (using Visual Basic for now) and it
> looks like using the PC's serial port to communicate with a PIC18F452
> that is connected to a DAC via SPI could work.  Has anyone done this?
> Is there a better/easier way?  Anyone got any code samples?  It would be
> great to find a DAC that could speak RS-232 directly. :)
>
> PC <--RS-232--> PIC18F452 <--SPI--> MAX504
>
> I chose to use the 18F452 and the MAX504 because I have them on hand.
> I'm  not tied to any particular language because I'm just starting out
> with PICs.
>
> Thanks,
> Chris
>
You could do away with the PIC altogether and bit bash SPI on your parallel
port for minimum cost/time.  It will still be relatively fast even through
VB, although the CPU overhead will be higher (not usualy an issue however).

Mike


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