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'[EE]: Breakout Box (was RS232 tester)'
2003\11\10@103729 by Josh Koffman

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Does anyone have schematics for a simple breakout box? A couple of times
I have wanted to add monitoring LEDs to a project, but on the RS232
side, not the TTL side.

Josh
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A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
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spam_OUTSavanaPicsTakeThisOuTspamAOL.COM wrote:
> Rather than software. I would reccomend using a breakout box. I repair ATM
> machines for several banking institutions as well as your local convenient store
> and my breakout box stays in the tool kit.  This will actually show you the
> signals on both sides.   Jameco sells the identical unit I use for about 23.00.
>  Good thing about it. it is simple.  plug it in and look at the signals.

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2003\11\10@111847 by Rob Hamerling

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Josh,

Josh Koffman wrote:
> Does anyone have schematics for a simple breakout box? A couple of times
> I have wanted to add monitoring LEDs to a project, but on the RS232
> side, not the TTL side.

There are many, and of course each has its (dis)advantages. If you want
a good versatile DIY breakout box, have a look what I'm using:

> http://www.robh.nl/ELECTRO.HTM


Regards, Rob.



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Rob Hamerling, Vianen, NL phone +31-347-322822
homepage: http://www.robh.nl/

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2003\11\10@133455 by Josh Koffman

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Thanks for the link Rob. A bit complex perhaps for just adding a couple
of LEDs to show activity, but I may just build a full one to have
around.

Thanks!

Josh
--
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
       -Douglas Adams

Rob Hamerling wrote:
> There are many, and of course each has its (dis)advantages. If you want
> a good versatile DIY breakout box, have a look what I'm using:
>
> > http://www.robh.nl/ELECTRO.HTM

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2003\11\11@100239 by Paul Hutchinson

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For a simple RS-232 signal monitor, just put a 2-pin bi-color LED in series
with a 3.0K resistor, between the signal of interest and signal ground. On
control signals one color will indicate active and the other will be
inactive. On the Rx/Tx lines one color will indicate inactive and
alternately flashing colors indicates activity.

The Radio Shack RS-232 mini-tester (276-1401) is constructed this way and is
a bargain at $15.00.

Paul

>{Original Message removed}

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