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Thread: M4 ATX USB connection

  1. #11
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    Hey Guys, I also got an m4-atx - it seems to be working all good except for the shutting down problem as you all are experiencing.

    I currently have mine all wired up according to documentation however, i did notice, as in another post i saw on here that about 75 - 80% of the time it will shut down properly if i turn my ignition off then on then off again. It waits for about 5 sec, then hibernates. Any other time it will just hard-off, then windows will have to fully boot on next boot-up.

    USB Connection seems to be working fine as a HID Device, if only we had somthing to update it with.

  2. #12
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    Quote Originally Posted by Fox_Mulder View Post
    Hmm I think the pinout on the m4 manual is wrong for the USB connectors.
    Thanks for the help, this would also explain why the power supply shut down if I hooked up the +5V cable. (directly to ground!)

  3. #13
    Variable Bitrate Fox_Mulder's Avatar
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    Quote Originally Posted by Arby View Post
    Thanks for the help, this would also explain why the power supply shut down if I hooked up the +5V cable. (directly to ground!)
    I was having the same problem, my carputer would not boot when the m4 was connected to the USB header on the motherboard. First I thought it was my cable, but that was fine so I assumed the motherboard pinout would be correct and I checked the M4 and saw that the pins were mixed up.
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  4. #14
    Variable Bitrate Fox_Mulder's Avatar
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    Quote Originally Posted by Crisp2gtr View Post
    it will shut down properly if i turn my ignition off then on then off again.
    This is a known bug in the firmware version 1.0 and has been fixed in 1.1 .

    I had the same problem, and since I am in Australia I really did not want to send my unit all the way back to the USA so I built myself a simple "in circuit serial pogrammer" (ICSP) and asked mini-box for the new firmware and I reprogrammed the microcontroller.

    If you have access to an ICSP or are good with electronics you can build one yourself and do this as well to get the new firmware. If not you'll have to send the unit to either back where you bought it from or mini-box to have the new firmware written to the unit.
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  5. #15
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    i'm not really having any of those problems with my M4, the problem i'm having is that the M4 wont recognize the power. there is suppose to be a green flashing light blinking waiting for ignition signal but i dont even get that! i used a multimeter to test the positve and the ignition to see if maybe it was my wiring but on the positive i get 12V and on the ignition when active i get about 12v and when not active i get 0V. I had this powersupply for about 2 months now and it has been working flawlessly! but yesterday it decided that it wasn't going to work any more....any comments or suggestions?

  6. #16
    Variable Bitrate hailrazer's Avatar
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    Did you check the fuse on the M4-Atx board?

  7. #17
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    yup! all my fuses including the one on the M4 everything is good no broken links

  8. #18
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    Quote Originally Posted by Fox_Mulder View Post
    I have been communicating with Laci from mini-box: tlaci AT mini-box.com
    As have I. I have the software in-hand and I wired up the cable with the ORIGINAL spec last night and it worked, but today it did not even recognize the device. I don't understand why it would recognize it once, and actually work to change some parameters...but not even recognize it today.

    I suppose I will rewire it. Ugh.

    So do I wire both pins 1&2 to the black ground of the USB cable?

    *EDIT*
    I did have it wired up correctly (2nd version). The numbers were just labeled different. So now I can't figure out why my PC would talk to the PSU yesterday, but not today.

  9. #19
    Variable Bitrate Fox_Mulder's Avatar
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    I just connected Pin 2 to the GND Pin for the USB cable as Pin 1 & 2 are connected together on M4 anyway. You could connect 1 & 2 together to the Gnd of the USB cable, makes no difference.

    lol I have no idea why it would talk before, unless you had switched around the cable or something, no idea - as long as it is working now Whats the software like for the M4?
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  10. #20
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    Quote Originally Posted by Fox_Mulder View Post
    I just connected Pin 2 to the GND Pin for the USB cable as Pin 1 & 2 are connected together on M4 anyway. You could connect 1 & 2 together to the Gnd of the USB cable, makes no difference.

    lol I have no idea why it would talk before, unless you had switched around the cable or something, no idea - as long as it is working now Whats the software like for the M4?
    I did have the wiring correct. Laci just sent me a diagram, but instead of moving descriptions around, he changed the numbers of the pins, so it was correct.

    The M4 software is nice...there are a lot of parameters available for change.

    Not sure if it was a bug or what...but I just unplugged the USB cable, plugged it into a different port, and it worked again.

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