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Thread: IRman Hacking....

  1. #1
    Unregistered User ODYSSEY's Avatar
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    Question IRman Hacking....

    I have a question about hacking my IRman. I was wondering if the following was possible or not. Here is what I want to do:

    I want to take the Infrared LED from the IRman board and move it about 4/5 feet. This way all I have to do is run three wires from the front to the trunk. Then reconnect the wire to the IRman board.

    Will this cause problems? Also I was wonding if I ran audio and video in a printer cable will I run into problems? I'm trying to figure out the best way to wire my system without using too many serparte cables.

    Comments and suggstions needed.

    ODYSSEY
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  2. #2
    Constant Bitrate
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    Originally posted by ODYSSEY:
    <STRONG>
    Will this cause problems? Also I was wonding if I ran audio and video in a printer cable will I run into problems? I'm trying to figure out the best way to wire my system without using too many serparte cables.
    ODYSSEY</STRONG>
    You _might_ run into problems .. the only reason being that the hardware that decodes the IR signal may not recieve a strong enough signal from a "remote" diode .. however I'm not certain that you will encounter said problem .. but if you do, you know why.

    In terms of your other "remote" installations, if they are data/timing sensitive, you will need to use buffers (aka line drivers) to boost the signals such that they still meet timing and voltage requirements.
    -James-

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  3. #3
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    Originally posted by ODYSSEY:
    <STRONG>I have a question about hacking my IRman. I was wondering if the following was possible or not. Here is what I want to do:

    I want to take the Infrared LED from the IRman board and move it about 4/5 feet. This way all I have to do is run three wires from the front to the trunk. Then reconnect the wire to the IRman board.</STRONG>
    There sould be no problem with the audio and vidio extentions. You can uy some from maplins for 10. As far is the irman goes you will have problems. The extention of the ir led shouldent be more than a few inches! ater that the signal will be two week for the controller on the irman board to understand. If you do try this you will have to use screened cable. Your best bet is to take the irman circuit out of its box and mount it behind the dash board and extend the wires of the ir led two or three inches so the ir led is sticking out of a hole in the dash. If you dont want alot of wires to the boot then a serial device only needs 3 wires, tx, rx , ground(screen). I would mount the ir led using a led holder in the support for the sun visor in the middle of the car, my curtisy light is next to it so i would mount the irman circuit behind that (there is loads of room). The three wires can then be run dow the front piller to the boot.

    Will this cause problems? Also I was wonding if I ran audio and video in a printer cable will I run into problems? I'm trying to figure out the best way to wire my system without using too many serparte cables.

  4. #4
    Maximum Bitrate gizmomkr's Avatar
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    With the A/v cable - I would highly recoemnd shielding.

    If you want good sound, and a clear picture, take the time , and make the investment on good a/v cables.

    The video line should be 75 Ohm coax for *best* quality picture , or some heavy duty or shielded RCA will doo.

    The Audio line should be shielded RCA cable.

    To answer you question though, yes, you could run it through printer cable, or UTP... but you will deffinately hear / see the difference.
    Gizmo-
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  5. #5
    FLAC
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    What they hell are u two talking about. THERE will be NO problem. I have done this on ALL my setups. Makes no sense to put a bulky IRman box up front or what ever. Take the EYE out, use a shielded wire and run it to where ever u want. If you want proof, go look at some of my pics. I even put the board, all wrapped up on a black tape in my box.
    And if you really want to take it to the next level like i did, add another eye in parallel with the first one. So this way u have one on the box and one up front. For more info go look at some of my pics.
    abcd-1
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  6. #6
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    I second cenwesi! I have taken the IR LED about 7 feet and put it in the housing of my LCD. It works fine, I have about a 15' range. I have it on my webpage too.
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  7. #7
    Maximum Bitrate smashr2k's Avatar
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    Yeah, I used phone cable to extend the 3 wires for the IRMan around 10' in my last install. You should have no problem as long as the wire is sheilded and you are careful about not shorting out the contacts.
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  8. #8
    Constant Bitrate
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    For all the ignorant flamers: You might notice that I said you _may_ have problems .. and I also gave a detailed explanation as to why.

    Without the knowledge of the following, it is always best to theorize with "worst case" conditions:

    a) IR TX pulse frequency
    b) IR RX sensitivity
    c) Ambient IR interference [ie. sun]
    d) Circut Impedence
    e) Circut sampling frequency

    ... the list grows !!

    When dealing with more advanced (demanding) electronics, one must consider timing issues such as inferred delay and clock skew.

    Sheesh !

    And to sum it all up .. I was explaining _WHY_ you _MIGHT_ have problems.

    LOL

    -James-

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  9. #9
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    For all the ignorant flamers:
    Whoh! I didn't see anyone flaming you. It is true you told Odyssey what problems he could run in to, but you didn't mention that you have not tried hacking the IRman yourself. This was a product specific question, and I don't think it is the best idea to be throwing around general concepts. This is not a very advanced product, and I think cenwesi over-reacted a little because you made it seem like this was a hard hack to do, with no direct knowledge on your part. I am just posting this to explain why you may have felt some negativity towards your post. I didn't even check this board when I did the hack, but if I did, and read what you posted, I may have thought twice about doing this very easy hack. Get my drift?

    BTW: I don't think anyone is "ignorant" on this board. And neither should you. Everyone is here to offer their knowledge and insight.
    http://www.mp3car.com/usersites/Maveric/ M.A.V.I.C. System
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  10. #10
    Maximum Bitrate smashr2k's Avatar
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    You have to solder three wires. Lets not get all up in arms about this. It is not a hard hack to do, and many people have done it without any problems. Chill dude.....
    Car: 1999 Dark Green Mustang GT Coupe
    Audio: Alpine HU, JL 6ch Amp, JL Stealthbox and XR series components.
    Player: Empeg for now; something custom later.
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