Re: TI-H: IR link


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Re: TI-H: IR link



The Max232 is the RS-232 driver. The $4 serial link only provides the
connection to the 9-pin on the Max. The $4 serial link will no longer be
needed after I change some things around and add the diodes and resistors
straight to the PCboard.

Greg Hill wrote:

> Has this been.. uhh.. tested yet? I'm wondering how RS-232 became involved
> in this if we're using the "$4 link" because the "$4 link" does not use
> the RS-232 protocol (it DOES use an RS-232 serial port, but it does not
> actually use the RS-232 protocol), and I can't see any ICs on the
> schematic that would be able to tell RS-232 from anything else..
>
> --
> Greg Hill
> greg-hill@bigfoot.com
> www.comports.com/link
>
> On Thu, 23 Oct 1997, Gregory Whitmore wrote:
>
> > I built it to not use the Graphlink cable. THat is why there is a RS-"#"
> > driver on the board. I will post pictures as soon as someone buys me a
> > digital camera. For now, the pics will have to wait. If you have a
> > Serial link, you will see that it is a 9-pin connector. The max-223
> > driver is a 9-pin as well, you just plug the 2 together. Where it says
> > RS-232 on the left of the schematic, that is where the serial link
> > plugs. When I say each end, I mean since you have to have two of these
> > to work, you need a serial link for each calc.




References: