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  • Sproggy is ALIVE

    Well, I got my 2.8+ board from mastro yesterday and I am now getting all correct voltages except the 5 volt Stand By line is not giving me squat... Anyone have a schematic of the 2.8+ they could email me?

    FYI, on a renco transformer, switching legs 1 & 2 AND 5 & 6 creates a working sproggy also...

    Thanks,

    Mike
    1999 voyager pontoon boat
    (soon to be computerized)

  • #2
    Aint she pretty?

    Before:

    After:

    Under:


    And my best friend....

    1999 voyager pontoon boat
    (soon to be computerized)

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    • #3
      glad you took the pics before soldering on the cables, it gets really messy with ~300 ground wires also add some heatsinks
      -
      My cars
      -

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      • #4
        Welcome to the world of sproggy .... !

        Take some pictures of the close up of the 5v sby side top view and i have sent you the details of the components and also the wiring diagram ...

        and also dont forget to heatsink the 745 !!

        Mastero

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        • #5
          Thanks Matstro, you have been a HUGE help and I hope the MP3Car community recognizes your contributions...

          Here are some pics








          I have the heat sinks, just dont have them installed yet...

          Mike
          1999 voyager pontoon boat
          (soon to be computerized)

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          • #6
            It looks like you used a transistor for the 5v regulator. Are you sure you used the correct part? You should be able to attach a heatsink to the regulator. It will look a lot like the 745.

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            • #7
              Well that would make a lot of sense, I think I have a couple 1 amp 5 volt regulators kicking around.. All I had was the previous attempt and a blurry print of the component layout to get it to this point... I will try that tonight, that should fix it huh? Do you have a copy of the 2.8+ schematic?

              Thanks,

              Mike
              1999 voyager pontoon boat
              (soon to be computerized)

              Comment


              • #8
                Mastero has it posted on his site:
                http://www.roshanindustries.com/carmp3/shop.htm
                (scroll down the page a bit)

                You probably have everything else correct, just need to replace the top component with a 78L05 or equiv.

                -Chris

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                • #9
                  I have some 5 volt 1 amp low drop out regulators that I will try... The specs on the LM78L05 is 140mA max current output where as the AXT recommends delivering 2 amps.. Maybe this is the limitation with the sproggys? I will let everyone know if this solves the problem.

                  Mike
                  1999 voyager pontoon boat
                  (soon to be computerized)

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                  • #10
                    I used a 7805A which I believe can supply 1A

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                    • #11
                      Are you using it with a EPIA motherboard?
                      1999 voyager pontoon boat
                      (soon to be computerized)

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                      • #12
                        Originally posted by digitallexus
                        I used a 7805A which I believe can supply 1A
                        Yes it can, but be sure to heatsink it, otherwise it will get about 300 to 400 degrees (C) -which it can't-

                        white bream
                        working on a trilogy: CARGO - UNIGO - MERGO
                        CARGO = the Car Computer
                        Intel Celeron M, [P]SDC, uBlox GPS, GPRS, WLAN, Silabs FM, RDS, TMC,
                        Dual-audio, Onecable TFT, Microsize: 45 x 108 x 168mm (1.8 x 4.3 x 6.6")

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                        • #13
                          I have a modified sproggy 2.7.

                          It has dual 787's and dual 788's to get 10A on both 5 and 3.3 volt rails.

                          I also added the soft-power-on and standby which the 2.7 lacked.

                          I am attempting to make it work with the M9000. I should have plenty of power available now to counter the "sproggy doesn't provide enough current for the m9000 startup spike" theory.

                          So far, no luck getting it to work though.

                          I've tried adding additional 5v pullup on the PS_ON line, extending the power_good delay, etc.

                          It works perfectly with my full blown P3-933 system, just not M9000.

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                          • #14
                            Ok, I am home from work now and I have added a LM1084 5 volt 5 amp regulator into the mix and now get all appropriate ATX signals... When I get back from the gym, I am gonna add my heatsinks, wire it up and cross my fingers that it will turn on my epia m board!!!

                            Mike
                            1999 voyager pontoon boat
                            (soon to be computerized)

                            Comment


                            • #15
                              I measured the current requirements of 5vstb line with the M9000 (I am using 512MB of PC2700).

                              Peak usage is only 295mA during standby. Otherwise I believe it was only around 150mA during power on.

                              Which M board do you have?

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