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Dial Variables ( EGT in paricular )

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I'm trying to interface a servo to my PMDG. Servo is moved by using an arduino but I'm trying to make sense of the variable from PMDG. Using the APU EGT as an example. This is available via offset 648C as an FLT32 number. How do I convert this into something to throw at the servo. I can see this number varying as the APU spools up but what does this huge number represent ? Is there an equation that goes with it ?


Paul Heywood

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