Subject:
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Re: 8475 -- a good buy
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Sat, 28 Dec 2002 18:31:45 GMT
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Viewed:
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1219 times
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> Except that the one for the drive wheels is also proportional - ie, if
> you push the stick in the controller a little bit, they go slow, and you
> you push it a lot, they go fast. I think there are three different
> speeds possible.
As soon as i read this I had to try it.... I'm so excited... (sec.)
.
..
....
.....
........
Your wrong.
:(
I added a motor, clicked it into my RPM-o-Meter and just nudged the
stick a tinsy-tiny little bit....
NOTHING!
then I smooched it just a c-hair more.............
FULL ON, 360 RPM (for a standard lego geared motor)
I pushed it all the way up....
360 RPM.
sorry Trevyn. maybe you have the "special" lego RC racer. cause i sure
don't.
> >
> > THE GOOD NEWS is that
> > if you attach a polarity switch like this:
> >
> > http://members.rogers.com/magno42/3out.jpg
> >
> > then the "proportional steering" can be made to be a constant out.
>
> Why didnt _I_ think of that...
cause I'm smarter than the rest of you.....
;)
(notice the wink)
(i also tried the proportional speed idea with the Aux output and the
same result.)
Calum, you asked this:
> There's a problem though. The mappings are weird. The second regular 9V
> out is mapped to the bottom controller paddles IIRC. The first regular out
> is mapped to the... RH top stick? And the steering output is LH top stick?
>
> That's doesn't really lend to battlebots if you want AB skip steer. This
> setup lends more to a car with steerable front wheels. What if you use the
> steering output to flip power between A or B side wheels?
my suggestion is to either make a front steer robot, OR use an adder
subtracter.... you could even do a battery box always ON for the
forward motion, and use the RH steer to add/subtrack to make the skid
steer system turn. who need reverse. that would free up 2 outs to
make a hammer and cross bow.
Chris
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Message has 2 Replies:
 | | Re: 8475 -- a good buy
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| (...) Am not!! (...) Were you using a geared 9v motor non loaded? If so, then it's not surprising that you noticed no difference. Try it with a load. I tried it with a weight at the end of an arm, and at one point on the controller it just buzzed, (...) (22 years ago, 28-Dec-02, to lugnet.org.ca.rtltoronto)
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Message is in Reply To:
| | Re: 8475 -- a good buy
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| (...) I agree. (...) Why didnt _I_ think of that... (...) Except that the one for the drive wheels is also proportional - ie, if you push the stick in the controller a little bit, they go slow, and you you push it a lot, they go fast. I think there (...) (22 years ago, 28-Dec-02, to lugnet.org.ca.rtltoronto)
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