[PD] Re: Force Feedback Joysticks

Hans-Christoph Steiner hans at eds.org
Tue Mar 4 04:54:56 CET 2003


What I would really love to do is be able to control the forces and 
vibrations directly from PD, rather than having to load pre-built 
'effects'.  From what I've read, it might be possible to emulate this 
by dynamically switching effects, but that seems like a bit of a pain 
to code.  I just found the linux FF API and have only started looking 
into it.  Is there any way to directly control the forces and 
vibrations?

I look forward to getting your code.  I have also been trying to think 
of a way to incorporate FF into jsarlo's joystick object, but I haven't 
figured that one out yet.

.hc

On Sunday, Mar 2, 2003, at 17:07 America/New_York, vanDongen-Gilcher 
wrote:

> Hi,
>
> This must be morphological resonance or something.
>
>
> I just finished a small lib of force feedback externals for linux.
> They are still a bit unstable, but so is the kernel api :)
>
> I need to set up some web space for this. Next week I will have time.
>
> Right now I am using them for a performance this wednesday in 
> Rotterdam,
> Netherlands.
> A complex patternsequencer type patch controlled by a midi faderbox 
> and a
> ff-joystick that shakes and pushes with every drum hit.
>
> Basically you can upload a number of effects to the device and then 
> play /
> change them.
> The externals I have are:
> ff-constant, a constant force in a given direction and a duration. 
> Nice for
> drum hits
> ff-periodic, a shaking effect, different waveform, in different 
> directions.
> ff-spring, makes the stick behave as if there are springs in x and y
> directions. You can also set a center and a deadband.
> Nice for controlling a filter with a specific resonant spot.
>
> ff-friction, programmed but untested.
> and general ff-gain and ff-autocenter controls.
> It is a lot of fun.
>
> You need to patch the kernel (although I think it is standard in the 
> 2.5
> series now)
> I needed to mess with the driver anyway because my "iforce compatible"
> joystick was not. At least for the linux iforce module.
> It is all a bit tricky to set up.
>
>
> Anyway I am swamped with work until after thursday. Then I will clean
> everything up and make them available.
>
> regards
>
> Gerard
>
>
>>
>> Message: 6
>> Date: Thu, 27 Feb 2003 12:33:33 -0500
>> From: Hans-Christoph Steiner <hans at eds.org>
>> To: pd-list at iem.kug.ac.at
>> Subject: [PD] Force Feedback Joysticks
>>
>>
>> I was wondering whether anyone here has worked with force feedback
>> joysticks.  Specifically any of the Immersion-based ones.  Their SDK
>> runs on Windows and they just released it for MacOS X in 10.2.3.  I
>> want to use these with pd.  They are USB joysticks, and they do work
>> under linux with the linux joystick drivers but since the SDK is 
>> closed
>> source and they have released a linux version, you can't use the force
>> feedback under linux, but 'iFeel' vibration stuff has been ported.
>>
>> I just got my joystick in today, and I have just started looking at 
>> the
>> SDK...
>>
>> .hc
>>





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