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Futaba servo control using Pololu controller

Discussion in 'Force-Profiler Simulator Control' started by jacoaj, Oct 21, 2009.

  1. jacoaj

    jacoaj New Member

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    Hey there fellow gamers well I am needing some assisstance with controlling my 2 futaba servos using a Pololu controller in Mini SSC II mode

    I'm using 4 axis in the profiler to start with.

    1Xsteering(a01) and,

    2X for acceleration(a02 and a03), one of which is inversed so 1 servo runs in reverse to the other

    I am having problems stringing the USO packet data, for example

    for steering use = ~255~~0~~a01~~255~~1~~a01~ which seems to work

    for acceleration = ~255~~0~~a02~~255~~1~~a03~

    but when i put them together as a single string in the USO parser only one of them will work and the servos seem a little scrambled.

    Am I approaching this the right way or not?? I havent even got the brake condition yet in which both servos will have to move in opposite directions to the acceleration to push the sim up for braking.

    Any suggestions would be greatly appreciated, cheers

    jacoaj
    jacoaj, Oct 21, 2009
    #1
  2. jacoaj

    jacoaj New Member

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    Thanks sirnoname for your interest in my project i just put them together. do i need more axis or not

    currently a01 = steering,a02 = acceleration servo #0 and a03 = acceleration servo#1(opposite direction)


    ~255~~0~~a01~~255~~1~~a01~~255~~0~~a02~~255~~1~~a03~

    then would i need to add two more axis for brake condition a04 and a05.

    I tried to have more than one input in the math section under g-force for the same axis but it only seems to operate the last input in the list, ie the one that the calibration offset is set to.

    cheers jacoaj.
    jacoaj, Oct 21, 2009
    #2
  3. jacoaj

    jacoaj New Member

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    thanks for that i will try soon will let u know the progress, cheers jacoaj.
    jacoaj, Oct 22, 2009
    #3
  4. jacoaj

    jacoaj New Member

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    looks like same problem, here is the latest using 5 axis and the 2 servos that will drive two window motors for the sim. just using a logitech driving force with steer,accel and brake.

    acceleration1 servo#1 a01
    acceleration2(counterclock) servo#2 a02
    brake1 servo#1 a03
    brake2(counterclock) servo#2 a04
    steer servos# 1 and 2 a05


    and the string

    ~255~~1~~a01~~13~~13~~255~~2~~a02~~13~~13~~255~~1~~a03~~13~~13~~255~~2~~a04~~13~~13~~255~~1~~a05~~13~~13~~255~~2~~a05~

    if I try each string separately, for accel,brake and steer, it works, combine then and the servos act scrambled.

    jacoaj.
    jacoaj, Oct 26, 2009
    #4