Subject:
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Re: rotation sensor mystery solved?
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Wed, 26 Jan 2000 17:15:36 GMT
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Viewed:
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5359 times
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On Wed, 26 Jan 2000, Ben Jackson wrote:
> I put in some debug code to catch rotations which skip a state (transitions
> like 3->1 or 0->2) which the legOS table `diff2change' currently translates to
> 0 steps (because we can't be sure whether that was 2 steps forward or 2 steps
> back). These seem to be what are causing the last of my pendulum glitches.
>
> Next I'm going to try adding momentum, and just assume that transitions which
> move 2 states moved 2 states in the direction of the last motion.
I tried hacking something like this into the old rotation sensor code,
and it didn't go real smoothly, but is definitely a necessity (I think)
if you want the sensor to handle very, very high speed apps.
> Is anyone else working on this? Are people at least enjoying the lively
> conversation I'm having with myself on lugnet.robotics.rcx.legos?
I am. I'm almost tempted to steal the school's rotation sensor's back, as
a I don't have any myself :)
-Luis
#######################################################################
Profanity is the one language that all programmers understand.
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#######################################################################
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Message has 2 Replies:
 | | Re: rotation sensor mystery solved?
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| (...) I got a letter two days ago indicating that the two rotation sensors I ordered the first week in January are nicely on backorder and will ship in a month or so. This is similar to what I was told on the phone when I ordered them from Shop and (...) (27 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
| | | Re: rotation sensor mystery solved?
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| (...) which (...) I added code to assume that 2 step transitions were 2 steps in the last known direction of travel. The results were MUCH worse than just ignoring those steps, as the current code does. This seems to suggest that the 2-step (...) (27 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: rotation sensor mystery solved?
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| I put in some debug code to catch rotations which skip a state (transitions like 3->1 or 0->2) which the legOS table `diff2change' currently translates to 0 steps (because we can't be sure whether that was 2 steps forward or 2 steps back). These (...) (27 years ago, 26-Jan-00, to lugnet.robotics.rcx.legos)
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