Page 1 of 4 1234 LastLast
Results 1 to 10 of 38

Thread: M2-atx anti-thump suck

  1. #1
    Variable Bitrate debugger's Avatar
    Join Date
    Mar 2006
    Location
    CA
    Posts
    313

    M2-atx anti-thump suck

    Or it does not work at all.

    I'm really disappointed in M2-ATX.

    First of all, I have to run an additional switch (on/off). It doesnt wanna start without another button connected to J9.

    Then, the amp turn on feature still gives a loud thumb to the amp, that's with SPDIF toslink optical cable connection

    It might be the amps fault, it has to inputs to turn itself on. ACC and RMT

    Acc - ignition connection, RMT - remote on/off connected to J6 RMT. There is another pin on J6 which is ground, do you have to connect it?


    Last thing, then I turn off the car, the PC stays on forever. I have to flip the external switch to turn it off. The PSU is currently in mode 2 (5sec/2 hours).

    Any suggestions?

  2. #2
    Calm
    Down
    Or
    Get
    A
    2
    Week
    Vacation
    -Love
    The
    Forum
    Policeman
    Wiredwrx's Avatar
    Join Date
    Jan 2003
    Posts
    3,605
    Quote Originally Posted by debugger
    Or it does not work at all.

    I'm really disappointed in M2-ATX.

    First of all, I have to run an additional switch (on/off). It doesnt wanna start without another button connected to J9.

    Then, the amp turn on feature still gives a loud thumb to the amp, that's with SPDIF toslink optical cable connection

    It might be the amps fault, it has to inputs to turn itself on. ACC and RMT

    Acc - ignition connection, RMT - remote on/off connected to J6 RMT. There is another pin on J6 which is ground, do you have to connect it?


    Last thing, then I turn off the car, the PC stays on forever. I have to flip the external switch to turn it off. The PSU is currently in mode 2 (5sec/2 hours).

    Any suggestions?
    Please specifically state what wires you have going where.

    You have obviously installed it incorrectly. Whether it is your main power connections between the car and the M2, or the M2 and your MB, somehting is wrong.

    This is not a common M2 issue.

    Interestingly enough, this is EXACTLY what the poster is complaining about in this thread.Totally dissapointed with my carputer!

    Michael
    ...I love the French language...especially to curse with...Nom de Dieu de putain de bordel de merde de saloperies de connards d'enculés de ta mère. You see, it's like wiping your *** with silk, I love it.

  3. #3
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,053
    Quote Originally Posted by debugger
    Last thing, then I turn off the car, the PC stays on forever. I have to flip the external switch to turn it off. The PSU is currently in mode 2 (5sec/2 hours).

    Any suggestions?
    It sounds like a simple problem for the on/off. Reverse the connector on one end that goes from the M2-ATX to the front panel connectors on the mobo. It doesn't just short out the pins, It needs the correct polarity. When you push the switch you do short it because the two ports on the M2 are in parallel, so on it goes. This is then directly tied to the shutdown problem. If it can't simulate a power button, then it can neither turn on, nor shut off the PC.

    Try this first. Just flip the connector on one end, and you should be good to go.

    Also the anti-thump thing could be that the M2 has assumed that the PC is on, because it sends the signal, (but it doesn't work), so on goes the amp. Then when you manually turn on the PC, the amp is already on.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  4. #4
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,053
    Quote Originally Posted by Wiredwrx
    This is not a common M2 issue.

    Interestingly enough, this is EXACTLY what the poster is complaining about in this thread.Totally dissapointed with my carputer!

    Michael
    Manherio...


    Well, It may be more common that you think. I have the same anti-thump problem. Everything else works just fine. It isn't bad though. Usually I just remote start so I never hear the thump. Doesn't bother me too much. It happens in both standby and cold boot, so I dunno.

    But the other problem seems relatively easy to fix.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  5. #5
    Variable Bitrate debugger's Avatar
    Join Date
    Mar 2006
    Location
    CA
    Posts
    313
    Flipping polarity on the on/off switch for the mobo didn't do the trick.. I've tried every possible combination.

    M2-ATX connectors:

    acc ign --> shared with LCD from the radio ACC
    + ---> from the amp +

    - ---> car chassis

    It might be the mobo problem, because its commell LV. I had to use P4 connector.

    I'm gonna run RMT from PSU to the amp (ACC and RMT inputs) and to the LCD acc (instead off sharing acc with the PSU) , and will try to troubleshoot the on/off problem..

    Does the ground pin needs to be connected to the ground on J6?

  6. #6
    Banned
    Join Date
    Jun 2006
    Posts
    303
    I have my M2 rmt cable connected to the amp in order to turn it on, but I still get the thump when the PC starts. I'm using a USB external sound card. Could it be that the M2 does not accomodate for the late loading of USB devices and turns on the amps before the sound card has been activated????

  7. #7
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,053
    Quote Originally Posted by salvi View Post
    I have my M2 rmt cable connected to the amp in order to turn it on, but I still get the thump when the PC starts. I'm using a USB external sound card. Could it be that the M2 does not accomodate for the late loading of USB devices and turns on the amps before the sound card has been activated????
    Yes that is it. The M2 doesn't really monitor the PC for when to turn on the amp. It just guesses. It figures it takes the mobo some amount of time before the "loading xp" screen comes up, and that's about when it says "on!". So if for example you have an extremely long boot, then you will get a thump, or if your drivers are loaded later then the black screen (i.e. USB after the desktop is showing and everything). THe only realy way around this is to build an interface with the PC, through a serial (9pin or USB), or a parralel port to send a signal to a relay to turn on the amp, only when the desktop has loaded and all drivers are ready.

    This is also the same reason that you get a thump from standby.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  8. #8
    Banned
    Join Date
    Jun 2006
    Posts
    303
    Ok, when my brother was attending school they built a little circuit like a timer. He would regulate the time with i don't know what. I believe there's a store here in SD that sells them already made. I should be able to place that circuit inline with the rmt line, test with the seconds until it's fixed, then add 2-3 more seconds just in case

    Can you provide any more info on the serial/parallel/usb solution? Links, etc?

  9. #9
    Fusion Brain Creator 2k1Toaster's Avatar
    Join Date
    Mar 2006
    Location
    Colorado, but Canadian!
    Posts
    10,053
    Well if you just get another timer circuit it is still a guessing game. Might work better, but you will still get a thump resuming from standby.

    As for the Serial/Parallel solution, all you need to do, is make a little program that once loaded will send out a little encoded bit to bypass the random blips when starting, and then a solid output to trip a relay that goes to your amp. You would make the program load in the Windows Startup Folder because that is pretty much the slowest thing to load.

    Here's a link for a simple program written in C# to control a db9 port: http://www.codeproject.com/csharp/Se...munication.asp
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  10. #10
    Banned
    Join Date
    Jun 2006
    Posts
    303
    Well, I guess I'm going with the timer since I don't have programming skills

Page 1 of 4 1234 LastLast

Similar Threads

  1. M2 ATX Amp turn on not working
    By CdRsKuLL in forum M2-ATX
    Replies: 30
    Last Post: 04-23-2010, 12:25 PM
  2. WTB m2 atx
    By ampy549 in forum Classified Archive
    Replies: 0
    Last Post: 05-21-2006, 01:44 PM
  3. Another M2 ATX Problem
    By mattfl in forum Power Supplies
    Replies: 8
    Last Post: 02-23-2006, 04:47 PM
  4. Powerin the LCD with the M2 atx
    By luckyno in forum LCD/Display
    Replies: 2
    Last Post: 01-20-2006, 01:14 PM
  5. Wtb: M2 Atx
    By EsKALad in forum Classified Archive
    Replies: 1
    Last Post: 01-03-2006, 08:59 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •