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Futaba Guru?! - Creating Variable Endpoints on a Dial

Discussion in 'Drone Electronics' started by Adam Etheridge, Apr 29, 2017.

  1. Adam Etheridge

    Adam Etheridge Member

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    Dec 28, 2013
    Posted by Adam Etheridge, Apr 29, 2017 #1
    Hi There

    We’re using a Futaba TX to control a DJI Hexacopter.

    I’m trying to set a dial (RD for example) so that we can control the maximum speed of the aircraft on the fly (AIL for example). Effectively ‘clamping’ the velocity, but being able to adjust the clamp in the air.

    The idea I had was to somehow programme the transmitter so that the RD dial varies the Ailerons’s endpoints...

    Does anyone know if this is possible?

    I’ve tired assigning a switch to control dual rate, which almost works, but this only gives me 2 speed rates, rather than being variable.

    Any ideas and suggestions much appreciated!

    Adam
     
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  2. DroneTalk

    DroneTalk R/C Expert Staff Member

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    new jersey
    Posted by DroneTalk, Apr 30, 2017 #2
    Not possible. You can use a 3 position switch to give you more dual rate ability.
     
  3. Adam Etheridge

    Adam Etheridge Member

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    Dec 28, 2013
    Posted by Adam Etheridge, Apr 30, 2017 #3
    Hi Paul - thanks for reply. What about programme mix?
     
  4. Andy POst

    Andy POst New Member

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    Dallas Tx
    Posted by Andy POst, Aug 12, 2017 #4
    I've got the same goal, and it looks like it IS possible. Any idea how this guy did it? (I asked and he's not responding)
     
  5. DroneTalk

    DroneTalk R/C Expert Staff Member

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    Jul 8, 2015
    new jersey
    Posted by DroneTalk, Aug 12, 2017 #5
    OK so one way is if you put your model in Multirotor model type than you can go to the dual rate screen and then use RD as your switch. You will have to set D/R 1 and D/R 2 etc to have multipoint dual rate. You don't want to change endpoint but instead use dual rates. But all that will do is change the dual rate not affect the endpoints.


    Update- looking at this again I do not see anyway you can affect the endpoint on the fly other than setting a dual rate.
     
  6. Andy POst

    Andy POst New Member

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    Mar 26, 2016
    Dallas Tx
    Posted by Andy POst, Aug 12, 2017 #6
    Well...I found a possible method, but it's a bit quirky. I assigned an open channel to AUX4 and assigned the left lever to AUX4. Then I did a custom mix between AUX4 and Throttle. It does just what it's supposed to do, but I haven't smoothed it out yet. If I set it up to decrease the throttle more and more the farther you slide the slider, then of course if you have it all the way forward, then throttling DOWN is that much more dramatic as well. To the point you could just toss it on the ground. So I set the switch that activates the mix to be the throttle itself, so if the throttle is below 50% then the mix is null. I'm working on a way to smooth out the response, as right now when I monitor the Servo's you can see the throttle come down then jump around a bit when it gets near 50%. Like it can't seem to decide who's on first. Know what I mean?
     
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