Servo not reaching full travel


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  1. #40
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    May 2004
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    Angry

    Hi, Ruijc

    Having tortured ( also build and modified ...) dozens of servos ...

    I can tell you EVEN Analog ones do not meet your requirements , as the linear response of futaba analog servos is only about 1/2 of the physical range ...

    for the full mechanical travel of a S3001, I've measured the pulse width from 200 µs ( full left ) to 2500µs ( full right ) with an awful ( LOL ) non-linearity between 200 and 800 µs ...

    Now ... Digital. " a 1.3 ms neutral won't work... " ... as classical travel is +/- 0.5 ms
    that means roughly only .9 to 2.1ms range will be accepted by the digital "amplifier" ... or will give a proportionnal output.


    STOP DREAMING this servo will NEVER REACH ITS PHYSICAL LIMITS !!! otherwise, that would mean you can burn the output stage of the amp ...


    Skimask's lines permit you to measure the input range of your servo ... cause exploring from 100 to 2900 µS.
    You're then sure you've seen ALL the travel your servo gan give ... no need to try to get more, unless modifying the servo amp factory settings !!!

    Alain
    Last edited by Acetronics2; - 29th December 2007 at 14:18.
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************

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