Subject:
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Re: 8 power levels, and only 8?
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Newsgroups:
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lugnet.robotics.rcx.java
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Date:
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Sat, 22 Sep 2001 09:21:11 GMT
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Viewed:
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2925 times
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Martin Egholm Nielsen <martin@egholm-nielsen.dk> writes:
>
> > I think for a start it would already be nice to be able to
> > synchronize on those 8ms motor cycles, to get more precise
> > motor control in Java. But I didn't yet get around to analyze
> > how the motor control routines work, it is quite complicated.
> Exactly! Then my "basic routine" above would provide equal
> results.
Ok, here are some results of my investigation:
- There is no general 8ms cycle
- When you change motor settings they become effective
on the next timer interrupt (occurs every ms), and
the rotating pattern for a reduced powerlevel starts anew,
and independently for each motor.
So you can just look at the clock and do whatever you like,
within the limited speed of the Java VM.
Jürgen
--
Jürgen Stuber <stuber@loria.fr>
http://www.loria.fr/~stuber/
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Message has 1 Reply:
 | | Re: 8 power levels, and only 8?
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| Here is an interesting paper on using NQC to control motor speed. A similar technique could be used in leJOS: (URL) paper has lots of interesing ideas in it besides motor speed control. My favourite being the proximity sensor which I have remodelled (...) (23 years ago, 24-Sep-01, to lugnet.robotics.rcx.java)
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Message is in Reply To:
| | Re: 8 power levels, and only 8?
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| Hi, (...) Bummer! I was afraid I might get that answer... :o) (...) Sure, but maybe it would be worth it, since I imagine that many/some of us will make some silly, but basic routine that cycles between float/stop and some motor power, anyway... (...) (23 years ago, 19-Sep-01, to lugnet.robotics.rcx.java)
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