The Big Think

September 7, 2004

Cable Woes

Filed under: Macintosh — jasony @ 5:50 pm

I’ve been trying for a couple of days to get some new home automation hardware running. Unfortunately, I’ve been having some problems with it. I think I’ve narrowed it down to a cabling issue (too many adapters in the loop), but I can’t seem to find the cable I need. What I’m looking for is a Mac Din8 to a PC Serial (DB09M). It looks like this. In fact, the one in the link is exactly what I need, except that it’s wired incorrectly. The cable in the pic is wired straight-through, but I need the wires to be hooked up thusly:

NC = Not Connected

1 NC
2 NC
3 3 TX
4 5 GND
5 2 RX
6 NC
7 NC
8 NC

Having never soldered a wire like this together myself, I decided to put a call out to the three people who read my blog (hi mom). Does anyone know where I can get a custom-wired cable like this.
And while I’m at it, why isn’t something like this standardized? Grrr….


  1. I think you can get a DB9 connector at Radio Shack — not sure about the Din8, though. It’s not *too* scary to wire a couple such things together if you get the connectors that are designed for such things. Since you only need 3 pins connected, it should be even easier.


    Comment by Sean — September 7, 2004 @ 7:58 pm

  2. Yeah – you can tackle this one. The DIN9 is the same connector that is on the Atari 2600 controller port!

    The good news is that you can’t blow anything up with this connector… it just won’t work if it’s wired wrong. To make sure you get the numbering right the first time, check out…


    Comment by Patrick — September 7, 2004 @ 8:41 pm

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