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Husqvarna Autotune software

Discussion in 'Chainsaws and Power Equipment' started by haveissues, Nov 7, 2015.

  1. haveissues

    haveissues

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    Does anyone have a copy of the Husqvarana autotune software they would like to share? I have a hunch about the hardware I would like to test out.

    Also, if anyone has a bad carb from an 550 or 562 that they would like to donate I will gladly pay shipping. Thanks!!
     
  2. Unicorn1

    Unicorn1

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    Interesting, what do you have going on?
     
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  3. haveissues

    haveissues

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    After reading through the manual for the autotune software I see the interface to the saw is 3 wires. While it is possible they developed their own protocol to talk between the computer and saw I suspect they use something off the shelf like serial. A basic usb to serial interface is a couple of bucks.

    As for the carb, I want to see if I can get to the chip to see if it is something off the shelf or they rolled their own. Custom silicon is seriously expensive so I doubt it. Getting to the chip will require destroying the carb so a dead one (or 10) would be handy. Really any of the electronics from an autotune saw would be handy.
     
  4. Unicorn1

    Unicorn1

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    Wow, this is out of my skill level. Sorry I can't help with any carbs either. Good luck and report back what you find:)
     
  5. lukem

    lukem

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  6. dgeesaman

    dgeesaman

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    I like what you're thinking...
     
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  7. cnice_37

    cnice_37

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    Ok, so lets say it is SPI... you are going to probe the output real time on a scope or logic analyzer? Reverse engineer the register map?

    I would have to think the mcu is off the shelf, but the register map is the key.

    The firmware has to be protected, so you have to be a pretty decent hacker.

    I am intrigued... also a double E by trade so if you need someone as a sounding board, or potentially bad advice :whistle:, hit me up.
     
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  8. lukem

    lukem

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    ^ Yeah...that. Might try using a binary multiplexer to decrypt the analog frequency of the flux capacitor too.
     
  9. haveissues

    haveissues

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    I'm certainly no EE, I'm just a hobbyist. My first goal is to see if I can replace the interface with something that doesn't cost $200. My assumption is the husqvarna interface is something like a simple usb to spi interface with some adapter cables but we'll see. I do have a scope and logic analyzer.

    Having more fun with the system would be a bonus and I also assume it is protected but you never know. It would be interesting to see a copy of the firmware for one of the modules as it comes form husqvarna before it is written to the modules.

    And thanks for the offer. If I learn anything interesting I'll let you know. Something to do during the long dark winter....
     
  10. haveissues

    haveissues

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    You would use a ADC to convert the analog signal to binary, silly. Every knows that :p
     
  11. J.Walker

    J.Walker

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    With 7 autotune saws now I got the software package from Spike.

    [​IMG]

    [​IMG]


    .
     
  12. haveissues

    haveissues

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    Would you mind if I asked what you paid for it? I heard he has the best price on it. PM me if you don't want to post it. Thanks!
     
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  13. Warped5

    Warped5

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    Ya know, the presence of that 'black box' has me convinced that's not a 'normal' USB cable in any way.
     
  14. J.Walker

    J.Walker

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    I'm impressed that how each saw is displayed.

    [​IMG]

    .
     
  15. NH_Wood

    NH_Wood

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    I think the real key is circumventing the multi-decodering - then dialing in the diodino auto-converterplex. After than, setting the trielectrodumpleganger is about as easy as taking candy from a babe! :DCheers!
     
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  16. bushpilot

    bushpilot

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    I think it works using a principle similar to the turboencabulator.

     
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  17. MasterMech

    MasterMech The Mechanical Moderator

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    I think y'all have termites in your backplanes.....
     
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  18. lukem

    lukem

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    I bet zee Germans have figured out how to break the Swedish chainsaw enigma code.
     
  19. clemsonfor

    clemsonfor

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    ?????? Man I am so lost here!
     
  20. old 040

    old 040

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    What I'd really like to see someone do on one of these A/T saws is retro fit a standard style carb on one to see how one would run, personally I'm not a fan of these saws, I bought a 550xp three years ago, never really even used it, I didn't like the way they start, when they finally start, sold it three weeks ago for a loss....I won't buy another, guess I'm still just old school, I'd grab my 346 in a heartbeat over a 550xp.....:confused:
     
    Last edited: Nov 10, 2015