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Thread: PathPilot on NM200

  1. #97
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    Default Re: PathPilot on NM200

    My VFD is configured to show the output RPMs, so it was quite easy to find the S value that resulted in a chosen speed in 300 RPM intervals. So the S value went into the lincurve X value and the VFD value into the Y. As for naming, the parameters for the number of lincurve intervals is "personality"! WTF.



  2. #98
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    Default Re: PathPilot on NM200

    Someone got pretty creative or very cryptic with that name. "Speed range WAG" might have been more enlightening.

    Lee


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    Default Re: PathPilot on NM200

    Personality comes form the generic hal component compiler, where a number sets a behaviour

    The HAL Component Generator

    (speed range is not good because lincurve is not limited to linearizing spindle speeds)

    if there is a question about a LinuxCNC component, just google the LinuxCNC manual page, for example "linuxcnc man lincurve"

    LINCURVE



  4. #100
    Gold Member LeeWay's Avatar
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    Default Re: PathPilot on NM200

    That makes a little more sense now.
    Thanks or that info.

    Lee


  5. #101
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    Default Re: PathPilot on NM200

    Yes, you see "personality" used in components that have variable inputs, outputs, or internal computations. One of my favorites is 'logic'. That's a logic gate that can have AND,OR, XOR outputs with up to 16 inputs. Those can come in very handy, but you need to have a HEX calculator handy since all that is controlled by a singe HEX value from 'personality'. Very handy to avoid having to fan-out with three 2-input OR gates just to get 4 inputs.


    It's abstraction. The name may not make perfect sense in every specific case but by doing that, it does make sense in general terms applied to many different cases.


    Think of a program to move a vehicle.

    You could have

    Car.Roll
    Plane.Fly
    Boat.Cruise

    You have to essentially write most of the same stuff for each vehicle to move from A to B, just with different mechanics and then your functions can only work with one type of vehicle. But if the way you interact with each vehicle is:

    Car.Move
    Plane.Move
    Boat.Move

    Then it's the same code to move a Plane as it is a Car. They just each get that done differently behind the scenes.

    I digress and hijack, but that's a bit of the "why" behind that.

    CNC: Making incorrect parts and breaking stuff, faster and with greater precision.


  6. #102
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    Default Re: PathPilot on NM200

    First "job" under Path Pilot - mill a square profile onto the end of a 1.125" square brass bar using a new 5/16" carbide endmill.



    The objective being to confirm the accuracy of the axis scaling performed during setup.



    Seems within the accuracy of the mill.



  7. #103
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    Default Re: PathPilot on NM200

    I'd call that a win!!



  8. #104
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    Default Re: PathPilot on NM200

    Nice..... very nice.!

    CNC: Making incorrect parts and breaking stuff, faster and with greater precision.


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