Mattias:
I have used this network for years and it seems to work with all
versions of the RS232 port drives.
                       o + 5V
                       |
                       >
                      <   10 K
                       >
RS232  20 K            |
o-----/\/\/\/--+-|<|---+----o Pic
               | 1N4148 or dual SMT diode
               --|<|---| Gnd
                     ----
                      --
- Wayne Foletta

> ----------
> From:         Mattias Engstrvm[SMTP:maten149@STUDENT.LIU.SE]
> Sent:         Monday, October 13, 1997 9:34 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      RS232 levels -> TTL
>
> I'm wondering if there is an easy way to convert RS232 output to
> levels
> suitable for
> a PIC. Like perhaps stripping the negative voltage with a diode and
> running the remainder through a transistor or something?
>
> Any pointers would be helpful.
>
> Regards, Mattias Engstrom
>
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