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  1. #1
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    EPR / Link2FS / Arduino

    Now that I've 'cracked' the code for my N1 and N2 gauges, I'm tackling the EPR (Exhaust Pressure Ratio) gauge....and its giving me fits.
    I have 3 Honeywell EPR gauges used on B727-200 aircraft. Their indications go from 1.0 to 3.0.


    With the Dreamfleet B727 that I'm interfacing with Arduino/Link2FS Experts (for FS9), I cannot get the FSUIPC offset codes (#1 Eng-08BC, #2 Eng-0954, #3 Eng-09EC) to accurately display the correct EPR values in Link2FS. I get the raw data just fine but the results (regardless of which type/formula I use) are not correct.


    The raw result maximum is 19639 under 'short' type with a maximum needle deflection to 2.2 on the gauge at max power/full throttle. To me, this indicates to go with a 'long' type.


    I've tried all the types in Link2FS with various formulas but nothing is proven correct. Not even close!



    Any clues?
    Jay
    KFLL

  2. #2
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    Re: EPR / Link2FS / Arduino

    Still no success in getting the EPR gauge to correctly operate.



    I've tried every type of data and numerous types of calculations with zero success.


    The FSUIPC SDK indicates that the 08BC offset (EPR Engine 1) advises that 16384 = 1.6 on the gauge. I get 'RESULT' readings on Double, Int32 (although these 2 seem to be identical), Long and Short.

    Any advice? What am I missing?

  3. #3
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    Re: EPR / Link2FS / Arduino

    Have you asked Peter Dowson on the FSUIPC forum?

    Regards

    Jan

  4. #4
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    Re: EPR / Link2FS / Arduino

    Hi, Jan;



    At your excellent suggestion, I have posted there and received a reply from Mr. Dowson.
    Still no clear answers but I'm on the way!


    Thanks for the tip!

  5. #5
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    Re: EPR / Link2FS / Arduino

    No success from Dowson's forum, either.

    The search for the solution continues.

    Jay