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Thread: Everything You need to know about your M4 ATX

  1. #241
    Low Bitrate sk8rjess's Avatar
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    it should turn it on after 5sec, not 60
    they call me hack
    Independence Auto Tech
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    "Let us search out and examine out ways, and turn back to the Lord; Let us lift our hearts and hands to God in heaven." - lamentations 3:40-41

  2. #242
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    Quote Originally Posted by sk8rjess View Post
    well, the usb ones are correct, those never change throughout all motherboards.
    someone correct me if i'm wrong, cuz it's been years since i've even touched my m4, but:
    pins 1-4 are to hook it up to USB. i'd find an old usb cord you don't use, and splice it for use on the m4 - that's what i did.
    5 and 9 are, well, ground.
    and 8, if i remember correctly is for your amp switch.
    I've read these threads till my eyes bleed, and I'm so frustrated and fatigued with this while M4 setup I want to throw it in the dumpster and pretend it never happened.

    In addition to all the other woes, I ordered the "official USB cable" with 4 wires in a 5 pin header. One of the holes is plugged so it will not fit the 5 pin row. Even if I snip it so that it could technically fit, I'm still unsure about the wiring.

    Is there ANYONE that can state in no uncertain terms how to place\hack\modify that USB cable and show exactly where it belongs? Crayon . . close up pics, interpretive dance, ANTHING?

    Black Green White Red . . . that's what I have to work with.

    TIA!

  3. #243
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    Quote Originally Posted by knownchild View Post
    OK so now i have a new question my computer turns on perfectly when i had all the dip pins off (in the up position) and when i have dip switch pin 1 on (down position) it should turn on my carputer after 60 sec right? because its not turning on now

    dip pin 1 being the one closest to the power cords.
    It seems that your psu does the same things with mine. Try via usb to change the on/off delay to 1500ms and see if it turns on your computer.

  4. #244
    Constant Bitrate knownchild's Avatar
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    well i have it working now but it doesn't wait 60 sec to turn on it turns on immediately and waits 60 sec to shut down after i turn off my car, on another note the software doesn't recognize the PSU but windows recognizes it as a usb device? weird
    Never accept STOCK equipment.

  5. #245
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    Tired of trying to get the M4 to work.

    I've read every post in this thread about the M4 because I've had problems since I bought it. What mine does is boot the board then it shuts the board down randomly like a normal shut down. That's when it's working at it's best. Most of the time it just sits there flashing and doesn't do anything even when I try forcing it to turn on. My board came with the latest firmware.

    I have 30 amps on 8 gauge wire going to the board with good grounds to the chassis and frame. I have a good signal wire (relayed) also going to the M4.

    The PC works perfect sitting on the bench in my office running off a regular atx ps.

    From what I've been reading it's just a poor quality design. No reason to really send it back if they are all a waste of time.

    I'll sell it for $50 and you can send it back!

  6. #246
    Constant Bitrate knownchild's Avatar
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    8 gauge wire?

    30 amps is alot? mine is about 18 max.
    Last edited by knownchild; 03-02-2011 at 08:48 AM.
    Never accept STOCK equipment.

  7. #247
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    Quote Originally Posted by knownchild View Post
    30 amps is alot? mine is about 18 max.
    It's not drawing 30 amps but the wire is capable of it and it's fused at 25.

    Just bought an Opus DCX6 - 250 watter. I will post the results in a few days after it get's here.

  8. #248
    Maximum Bitrate Mickz's Avatar
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    I have never had my M4ATX turn off unexpectedly.

    The only fault I have found with the M4 is the IGN line is very touchy with impulse noise of any kind.

    That is a design fault.

    I place a diode in series with the M4 IGN line and a 33uf cap between the IGN and Ground terminals. That seems to solve any glitch issues with an installation. Not everyone has this problem but random glitches can cause it.

    Earth straps are not important with respect to the “DC operation” of the PSU “Providing” you have a two wire connection from the M4 to the battery (or supply) IE. A 12v AND ground return lead. Relying on the car chassis for a DC ground return is bad practise.

    I’m not suggesting you don’t have a return ground lead, just putting it out there as a possible cause of inconsistent operation.
    GA-Z77N-WIFI, i5-2400S, 8GB, Intel 520 128GB SSD, M4-ATX Modified, 2 Rev Cams, 2 Web Cams
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  9. #249
    Constant Bitrate knownchild's Avatar
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    Quote Originally Posted by Mickz View Post
    I have never had my M4ATX turn off unexpectedly.

    The only fault I have found with the M4 is the IGN line is very touchy with impulse noise of any kind.

    That is a design fault.

    I place a diode in series with the M4 IGN line and a 33uf cap between the IGN and Ground terminals. That seems to solve any glitch issues with an installation. Not everyone has this problem but random glitches can cause it.

    Earth straps are not important with respect to the “DC operation” of the PSU “Providing” you have a two wire connection from the M4 to the battery (or supply) IE. A 12v AND ground return lead. Relying on the car chassis for a DC ground return is bad practise.

    I’m not suggesting you don’t have a return ground lead, just putting it out there as a possible cause of inconsistent operation.
    Could you elaborate on this diode you connect to the IGN cord as i have noise and have been trying to figure out how to get rid of it, i have investigated ground loops and have even purchased a ground loop isolator to no avail.
    Never accept STOCK equipment.

  10. #250
    Maximum Bitrate Mickz's Avatar
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    Do you mean Noise from the ATX getting into the equipment or noise spikes from the car tripping the ATX making the PC shutdown or start up incorrectly?

    If the latter then it’s connected like this.

    GA-Z77N-WIFI, i5-2400S, 8GB, Intel 520 128GB SSD, M4-ATX Modified, 2 Rev Cams, 2 Web Cams
    8" 16:9 TRANSFLECTIVE, Win8-64, Dual GPS RX and Garmin PC + Odyssey Nav, FM-DAB+, BB-Rec
    T-Screen HVAC control, custom microcontrollers, code and FE. CarPC Project

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