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Thread: Ummmm... (Touchscreen Question)

  1. #1
    Low Bitrate MrGee's Avatar
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    Ummmm... (Touchscreen Question)

    Ok so I finally have my board/PSU(M2-atx) and I'm ready to start installing some stuff for a test run. Want to just put the stuff in see it boot up drive around the block once or twice make sure that my custom case isn't going to shake everything loose. Two problems I'm finding

    1. I hear people saying that they should connect their Touchscreens to the PSU, now... I don't know about the other PSU's but the M2-atx doesn't have a regulated 12v rail I could just tap into ( I am newb so I could be way wrong) But how would I do this? I was thinking the only way I could really think of is if I take the 4 Pin power cable splitter (http://www.newegg.com/Product/ShowIm...D01208+%2D+OEM)
    And cut one of the ends open to get to the 12v wire... am I going to really (f) something up doing this?

    2. To power the M2-atx from the battery I just connect the 12v power line from the M2-ATX to the battery into the power distribution block correct? (To power the M2-atx) the wire that came with the M2-atx just seems so small... when in the 8 guage distro block. ignition I understand and the negative I understand I just have to ground.

    I hope this makes some sort of sense... I appologize for being an idiot... lol... no need to flame me...

  2. #2
    FLAC FC3S's Avatar
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    yeh, most people probably just cut into the Molex wiring for the 12v (i could be wrong as well tho, lol)

  3. #3
    Low Bitrate MrGee's Avatar
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    Quote Originally Posted by FC3S
    yeh, most people probably just cut into the Molex wiring for the 12v (i could be wrong as well tho, lol)

    lol... Just seems the most logical... by the way does anyone know how most molex connectors are connected? is the yellow wire in Pin 1 the 12v? Been so long since electronics class... DAMN IT SHOULD HAVE PAYED MORE ATTENTION! Should also go buy a volt meter...

    BTW, still need clarification with the molex connector getting hacked for a 12v
    wire for the Touchscreen, lol...with me and FC3S it's like the blind leading the blind... lol...

  4. #4
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    Quote Originally Posted by MrGee
    lol... Just seems the most logical... by the way does anyone know how most molex connectors are connected? is the yellow wire in Pin 1 the 12v? Been so long since electronics class... DAMN IT SHOULD HAVE PAYED MORE ATTENTION! Should also go buy a volt meter...

    BTW, still need clarification with the molex connector getting hacked for a 12v
    wire for the Touchscreen, lol...with me and FC3S it's like the blind leading the blind... lol...

    It depends on how many pins there are and the manufacturer. A little time with a digital volt meter should get you on track

  5. #5
    FLAC FC3S's Avatar
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    lol, i dont have one personally (yet), so i cant tell u for sure, but what else can u connect to that has the constant 12v?

    unless theres some magical 12 line coming off the psu, lol

    (im gonna be corrected here and shown where that magical line is i know it -_-; )

  6. #6
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    Convention for 4-pin molex:
    yellow = 12v
    black = ground
    red = 5v

    Get a multimeter. They are an essential tool for electronics and not that expensive. A basic model will go a long way. What you are planning to do will work. I am powering my screen in a similar fashion.

    The 18AWG leads that come default with the M2-ATX are (barely) sufficient. However recommend you run heavier cables for power and ground, especially if it is going to be a long wire run.

  7. #7
    Low Bitrate MrGee's Avatar
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    Quote Originally Posted by piabu
    Convention for 4-pin molex:
    yellow = 12v
    black = ground
    red = 5v

    Get a multimeter. They are an essential tool for electronics and not that expensive. A basic model will go a long way. What you are planning to do will work. I am powering my screen in a similar fashion.

    The 18AWG leads that come default with the M2-ATX are (barely) sufficient. However recommend you run heavier cables for power and ground, especially if it is going to be a long wire run.
    Multimeter on the way... lol... That measures volts/amps/ohms/watts? Not sure what the multi is... used volt meters before.... Really appreciate the help. especially for the convention for 4 pin molex connectors... there are two black wires in each molex...hmmm... Would the multimeter be able to tell me which is ground or are they both a ground? lol...

    As for the M2-atx it doesn't have a long way to travel but I'm thinking of just throwing a higher guage wire on it, just need to buy some of those clips to push it onto the prongs or just solder it.

    As for the length of wire you had to run to the screen did you just use some generic type of cable to lengthen the original wire from the PSU? I'm about to be ordering my LCD think I'm going to go with a 8" Touchscreen for now (it will be a lot easier to find a way to mount, would like a 10.4" like Alti...lol... Not that pro yet though

  8. #8
    Low Bitrate MrGee's Avatar
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    Quote Originally Posted by FC3S
    lol, i dont have one personally (yet), so i cant tell u for sure, but what else can u connect to that has the constant 12v?

    unless theres some magical 12 line coming off the psu, lol

    (im gonna be corrected here and shown where that magical line is i know it -_-; )

    I know!!!... I'll just stick each wire on my toung and see which zaps me lol... that is a joke and should not be tried by anybody... 12V might not kill you but the amps will!... lol...

  9. #9
    FLAC FC3S's Avatar
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    lol

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