[gameprogrammer] Re: Rumble

You are right i have no control over speed...only have an on/off
switch. I was thinking about that too though randomly turning it on
and off or following some kind of pattern for maximum rumble...hmm

also it seems it takes a second (probly 250-500ms actually) for the
motor to spin up to full strength

i guess there's no secret of the industry on how to accomplish this
stuff though or atleast no one is telling it :P

On 3/15/07, Lilith Calbridge <lilith@xxxxxxxxx> wrote:

Making two guesses here.  The roughness could be a matter of the motor speed, 
as opposed to it's duty factor.  I'm thinking you have no control over speed.

I'm also thinking that if you vary the duty factor randomly, within certain limits, 
between sequential on/off phases you create an unexpected behavior that isn't 
"smooth."  Changing the minimum and maximum of the duty factor could also 
produce certain degrees of roughness.

--
Lilith

>>> On 3/13/2007 at 1:06 AM, "Alan Wolfe" <alan.wolfe@xxxxxxxxx> wrote:
> Has anyone done any work with force feedback or a rumbling controller?
>
> I started working with one today and tried to make a "soft rumble" by
> turning on and off the motor every 25ms for 500ms total and it did
> make a pretty soft kind of rumble.
>
> To make a harder rumble, i tried leaving the motor on for 500ms and it
> was a little harder but wasn't quite what I thought it would be hehe
>
> I think maybe I'm naive in thinking that leaving a rumble motor on is
> the roughest it can get and that maybe some way of turning it on and
> off will make it rougher.
>
> Anyone know anything about this realm of game programming? (:
>
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