Subject:
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Re: TachoSpeed.nqc
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 13 Mar 2007 13:26:09 GMT
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Viewed:
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3875 times
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> > > task main()
> > > {
> > > OnFwd (OUT_L+OUT_R);
> > > Wait (20);
> > > while (true)
> > > {
> > > if (TachoSpeed(OUT_R) < threshold) //default behaviour
> > > {
> > > reverse (50);
> > > clockwise (30);
> > > OnFwd (OUT_L+OUT_R);
> > > Wait (20);
> > > }
> > > if (TachoSpeed(OUT_L) < threshold) // alternate behaviour
> > > {
> > > reverse (50);
> > > c_clockwise (30);
> > > OnFwd (OUT_L+OUT_R);
> > > Wait (20);
> > > }
> > > }
> > > }
> That doesn't solve the riddle though, because I hade the bot pushing
> against the wall for several seconds, with 'watching the brick'
> reporting values of around 57 and still the if statement wasn't executed.
For the RCX wait times are in 1/100 of a second. Is that the same for the
Cybermaster? If so the reverse and turn times are a little short (as well as
the motor ramp up period). I could see how it would be difficult to notice the
robot backup for 1/2 a second and then turn for 3/10 of a second. It may just
look like the robot is always driving forward.
Can Cybermaster make sounds? I use sound on the RCX for debugging purposes all
the time.
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Message has 1 Reply:
 | | Re: TachoSpeed.nqc
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| (...) According to the NQC Programmer's Guide the Cybermaster wait time is in 1/10 seconds. This is consistent with my CyberMaster's behaviour when I set the threshold to a high value and the if routine is executed. I hadn't considered using sounds (...) (18 years ago, 13-Mar-07, to lugnet.robotics)
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Message is in Reply To:
| | Re: TachoSpeed.nqc
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| (...) You assumed correctly. Without the wait the if statement is always executed immediately. I see what you mean: by taking the wait out of the start of the loop the sensors are checked more frequently. That doesn't solve the riddle though, (...) (18 years ago, 12-Mar-07, to lugnet.robotics)
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