RE: TI-H: IR link
[Prev][Next][Index][Thread]
RE: TI-H: IR link
and to make matter worse, i checked out the schematics and compared it to those of the $4 link, and the pinouts don't match, so the inverted signal is coming from nowhere. That is, of course, assuming that you're on 25-pin. on 9-pin, there's a similar problem.
----------
From: Greg Hill[SMTP:gregh@xmission.com]
Sent: Thursday, October 23, 1997 10:43 PM
To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: IR link
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.
- Warning
- Could not process part with given Content-Type:
application/ms-tnef