Subject:
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Re: Newbie's questions
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 28 Dec 1999 15:37:20 GMT
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Viewed:
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706 times
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Uwe Denzer <Uwe.Denzer@munich.netsurf.de> wrote:
> 1. Stalled motors
> How big *really* is the danger to damage a motor by stalling? (Should I
> really bother much to install those clutch gears?)
I personally used the clutch gears more to build timing tolerant mechanisms
than to protect motors from damages. I mean in those cases when you want
your motor to move something up to a point and then "slip", and you don't
want to use a sensor to monitor eg the end of the stroke. Of course pulleys
and belts may be used as well for this purpose, but they're less efficient.
I know that the RCX has a built-in current limiter (1A?), but I'm not sure
of the technical details.
> 2. IR "range"
> What is the reason one can set this IR transmitter to 2 different
> ranges? Why not always set it to long range? What's the disadvantage of
> short range?
If you have more than a single RCX the short range setting helps you not to
download the program on all of them if they're on.
> 3. Plastic type
> What's the chemical composition of Lego parts?
> (Already thinking about self-made sensors, I want to prepare the proper
> glue...).
ABS, a polymer of polystyrene: Acrylonitrile Butadiene Styrene. Very easy to
cut, saw, drill and glue :-)
Have fun
Mario
Web page: http://www.geocities.com/~marioferrari
LUGNET member page: http://www.lugnet.com/people/members/?m=22
Proud member of ItLUG: http://www.itlug.org
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Message is in Reply To:
 | | Newbie's questions
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| Hi there, I got my first RIS kit for X-mas. (Actually, I bought it for myself after I couldn't convince my daughter to wish it for herself :-) I made my first robot last night (after my family finally went to bed), and it runs quite well (still with (...) (25 years ago, 28-Dec-99, to lugnet.robotics)
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