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View Poll Results: What is your favorite holonomic control setup?
One 3-axis joystick, twist = turn 11 20.00%
One 3-axis joystick, twist = translate sideways 1 1.82%
Two 2-axis joysticks, one all-translate, one for turning 17 30.91%
Two 2-axis joysticks, one for/rev & turn, one translate sideways 1 1.82%
Gamepad with FPS setup, one stick for translate, one for turning 18 32.73%
Gamepad with alternate setup 4 7.27%
Other 3 5.45%
Voters: 55. You may not vote on this poll

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Unread 08-01-2015, 12:17
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Re: What is your favorite holonomic control setup?

Last year, we used the xbox controller, with the joystick for translation and the triggers for rotation. We never did get field centric-coordinates working last year; we figured out post-season that we had a bad gyro. I would definitely like to try a 3-d joystick, using twist to spin; it seems most intuitive.
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Unread 08-01-2015, 14:27
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Re: What is your favorite holonomic control setup?

I liked using an Xbox controller with forward and backward movement on the triggers and rotation on the left stick's x-axis like driving a car in Grand Theft Auto.
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Unread 08-01-2015, 14:33
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Re: What is your favorite holonomic control setup?

We are planning to experiment with an RC multicopter style control layout for mecanum. For the initial testing we will be using my FRsky Taranis which supports a USB joystick mode natively. The right stick will control translation, the left x axis will control yaw (rotation), and the left y-axis will control max speed (throttle) to assist in precise movements.

We hope that the larger throw distance of the sticks on the RC transmitter will allow for more precise movement than the typical logitech gamepads.
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Unread 08-01-2015, 14:39
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Re: What is your favorite holonomic control setup?

Quote:
Originally Posted by Saberbot View Post
and the left y-axis will control max speed (throttle) to assist in precise movements
Instead of limiting motor voltage, have you considered gain-shaping the joystick outputs?

http://www.chiefdelphi.com/media/papers/2421


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Unread 08-01-2015, 15:16
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Re: What is your favorite holonomic control setup?

Quote:
Originally Posted by Poseidon1671 View Post
I liked using an Xbox controller with forward and backward movement on the triggers and rotation on the left stick's x-axis like driving a car in Grand Theft Auto.
What did you use for side-side translation?

Quote:
Originally Posted by Ether View Post
Instead of limiting motor voltage, have you considered gain-shaping the joystick outputs?

http://www.chiefdelphi.com/media/papers/2421


We have setup out current joystick to use gain shaping (cubic, IIRC) as well as setting up the throttle on the joystick to scale this further down, if more accuracy is desired. Mostly just as an experiment, but it is working nicely.
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