Re: TI-H: Bad TI $4 serial link


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Re: TI-H: Bad TI $4 serial link




I made the same link, and it won't work with anything else than cal. Now I
just bought two zener díodes when looked at my link closer and realized that
I'd made the link with wrong diodes. I haven't yet put the diodes in the
link, cos I made the link so accurately that all of the parts take less than
1cc inside the link, and now I can't do anything to it without some kind of
a stand to put the link on when soldering. Of course I had a stand when I
made it, but that was borrowed from a friend of mine... Also, could someone
tell me, should I use zener or glass diodes, before I change the link, so
that I won't have to change it again...

        Markus Räty
(markus.raty@usa.net)


----- Original Message -----
From: Eilon Lipton <yoe@mediaone.net>
To: TI-Hardware <ti-hardware@lists.ticalc.org>
Sent: 14. huhtikuuta 1999 9:57
Subject: TI-H: Bad TI $4 serial link


>
> Hello everybody,
>    I took my first big step into messing up hardware and decided to build
by
> own "$4 serial link" to hook up my TI-86 to my computer. Thing is, it is
> somehow messed up. I followed the schematic on
> http://linkcables.ticalc.org/serial.html precisely. I used parts with the
> exact specifications mentioned and soldered them together. I used half of
> the original TI calc-to-calc cable for the calculator side to ensure a
good
> connection. I am running Windows NT 4.0 Workstation and tried using
WTran8x
> and W32Tran8x, and even TI's GL program for the heck of it. When I simply
> plug the cable in, the led is on bright. Whenever I try to transfer
> something it gets a little dimmer, but then the calculator complains of
> Error 38 - link error, and the led goes back to bright.
>    I am going to try to use cal091b later if I feel like going to DOS. Do
> any of you have any idea why this does not work? All diodes are in the
right
> direction, the resistors' directions do not matter (right?). One idea I
> have: I used super glue to make sure nothing would fall out of place - but
I
> kind of doubt super glue is very conductive... I read the "hints" page on
> the link above but nothing...
>
> Help please...
>
> Eilon Lipton
> yoe@mediaone.net
>
>



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