Alt-BEAM Archive
Message #10057
To: beam@sgiblab.sgi.com
From: Robert Selby Robert.Selby@madge.com
Date: Fri, 11 Feb 2000 11:22:46 -0000
Subject: [alt-beam] Re: aggravating little pager motors..
hehe !!!
Best way I found was a pair of heavy duty wire cutters (or small bolt cutter
??)
Put the blades on the weight parrallel with the shaft and squeeze - and ping
off they come :-)
I never could "punch" the shaft out and having looked at it I can see why !
The shaft has an embossed pattern on it (on mine at any rate) which the
weight grips.
Regards,
Bob
------------------------------------------------------------
Robert Selby email : rselby@madge.com
Senior Development Engineer, voice : +44 (0)1753 661 243
Madge Networks Ltd, fax : +44 (0)1753 661 888
Wexham Springs,
Framewood Road,
Wexham, Slough
SL3-6PJ
England (UK).
------------------------------------------------------------
>> -----Original Message-----
>> From: William Cox [mailto:william@characterlink.net]
>> Sent: 09 February 2000 18:45
>> To: BEAM
>> Subject: aggravating little pager motors..
>>
>>
>> How do you get the weights off the pager motors?? I tried
>> using a paper clip
>> and a hammer to force the shaft out, but I could only get
>> the shaft about
>> half way, I then tried to smash it off with a hammer. I
>> remember another
>> list member saying something about that. All I got from
>> that was smashed
>> cement, and a shaft broken off at the weight! One down, 16
>> to go.... I tried
>> on another motor, finally I was fed up, so gripped the
>> motor with one pair
>> of pliers and the weight with the other one. Bad idea... I
>> pulled out the
>> shaft from the motor!!! Arg! 2 down 16 to go. I was able to
>> push the shaft
>> back into the motor, and I works somewhat. What is the
>> right (best) way to
>> do this?? Thanks.
>> -William
>>
>> ____________________________
>> http://robot-central.webjump.com/
>> Robotics books, projects, resources,
>> links, news, and more!
>>
10058 Fri, 11 Feb 2000 04:00:22 PST [alt-beam] PCB's vs Free form... beam@sgiblab.sgi.com "Timothy Flytch" > > > ?..........It strikes me that the FreeForm School may be more
> > creative and
> > > the PCB School may be "neater," in appearence rather than design.
> > isn't appearance a part of design?
PCB's vs Freeform...
the pattern that is encouraged is...
1) bye a kit and build it
2) build one from scratch
3) build something that no one has every seen
There it art in diversity... so anything creative is highly encouraged.
There is also a learning process that comes with building someone ells's
design with your own twist.
beauty is in the eye of the beholder...
what I see from Mark T. lately is PCB's that our then he free forms these
into critters :)
So all we care about really is that you share your successes ... and ...
failures
To me all robots are beautifull :)
Timothy...
>swearing in the sense of 'believing' either in freeforming or PCB'ing. If I
>have given the impression that I was implying you cursing or the likes i
>apologise - that was not my intention. AFAIK is an abbreviation of 'as far
>as i know'.
> > Subject: RE: ...yet another new question.....
> > AFAIK there's no 'swearing' to one or another. Freeforming has it's
> > possibilities and limitations as do PCB's. I can think of a number of
> > reasons that my BEAM-ant cirquit would be better off with a PCB
> > which is my
> > next project. IMHO freeforming tends to result in somewhat more compact
> > bots. However, when complexity arises PCB's can be a godsent.
> > > Hi, is there a raging debate between the PCB users and the
> > > FreeForm Builders
______________________________________________________
10059 Fri, 11 Feb 2000 13:25:41 +0100 [alt-beam] Re: 74x240 question "Thomas Pilgaard" Just very short -
Is there a difference between the HC and HCT types?
Thanks
Thomas
> -----Original Message-----
> From: owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
> Behalf Of David Perry
> Sent: Friday, February 11, 2000 11:36 AM
> To: beam@sgiblab.sgi.com
> Subject: Re: 74x240 question
>
>
> hmm, my beam ant and head (old motor) both ran pager motors fine
> - what are
> you using for a pwer source?
>
> david
>
> -----Original Message-----
> From: Ben Hitchcock
> To: beam
> Date: Friday, 11 February 2000 2:57
> Subject: 74x240 question
>
>
> >All,
> >
> >I have been experimenting with a 74HC240, and I can't get the
> chip to drive
> >a pager motor directly even with three outputs ganged together.
> >
> >I've seen this done with 74AC240, I was just wondering if anyone had done
> >this with a 74HC240 at all?
> >
> >I like HC because of the low current consumption (I'm making a
> photovore).
> >How does the current consumption of AC compare to HC? I guess
> I'll have to
> >use driver transistors anyway, because Dick Smith doesn't stock any AC
> >chips.
> >
> >I noticed in wilf's 240 uCore schematic that he used HC, which is why I
> >thought that I might be able to use pager motors with two
> outputs ganged up
> >together.
> >
> >Any ideas?
> >
> >thanks,
> >Ben
>
>
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