Alt-BEAM Archive
Message #06716
To: beam@sgiblab.sgi.com
From: Richard Piotter richfile@rconnect.com
Date: Wed, 13 Oct 1999 15:17:31 -0500
Subject: [alt-beam] Re: Was: What do I Need?
They are not all new. Some don't even have the glass cover. They look
old and used, with a few exceptions.
Sathe Dilip wrote:
>
> JVernonM@aol.com wrote:
> >
>
> > sub contractor. Your local power company may be different, which is why your
> > school has so many meters. It would be interesting to see what they say when
> > you ask for surpluses.
>
> I think it should be possible to buy new meters from the manufacturers.
> Particularly in a school situation, you sometimes have to wire these up
> to measure power consumption of your own set ups. They need not come
> necessarily from the utility.
>
> I know as BEAMers we are not interested in new meters but am just
> explaining why the school can has so many.
>
> Dilip
> --
> Pl. remove *s from the e-mail address to reply
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
6717 Wed, 13 Oct 1999 15:15:37 -0500 [alt-beam] Re: Was: What do I Need? beam@sgiblab.sgi.com Richard Piotter That's exacttly what I'm thinking. Realy though, all the things are are
heavily geared setups, like maybe 3 to 5 or more OTU type gearboxes in a
row (yes, that many gears!!!). There is an OTU style device inside, and
then everything else is external. The main spindle is attached, usualy
through worm gears to the activity disc (the disk that spins at a
visible speed). The rest of the dials are geared down in an external
gear box that is packed. The number anf type of gears vary from meter to
meter. They are designed like those realy big fuses. you litteraly pop
them in and out, and there are only a few mounts used to remove them.
over 240 volts can be passing through them, and if you have 3 phase
lines, there may be three meters, or it may incorporate a 3 phase motor.
Either way... GEARS GEARS GEARS!!! :)
I'm going to ask about it (teacher hasn't been supervising lab cause of
meetings). Maybe next week, I hope. I actualy don't even know where the
utility company is in this town! HEHE! Some of the gears are thin, some
ar thick, but the ones that made me drool were the metal right angle
gears!!! Similar gears cost over $20 a pair at small parts (http://www.smallparts.com)
I wouldn't count on much luck finding them, but if you do... GRAB
them!!! You'll be very lucky to ever find anothe source of gears so
nice! Remember, these are precision devices! They CAN'T break down
easily, and are made from only the best parts. I've yet to see a plasitc
gear in one! I actualy did see the things in a surplus catalog some time
ago! I wish I remembered what catalog it was in. Point is though, it is
possible top find them. Good luck though!
JVernonM@aol.com wrote:
>
> In a message dated 10/13/99 10:48:31 AM Eastern Daylight Time,
> richfile@rconnect.com writes:
>
> > If you can find them at a dump or ask the utility
> > company what is done with damaged ones... Might be worth while. I've
> > never asked, and I don't know if they'd be cooperative.
> I'm not sure they would. It seems to me I remember someone saying that the
> power companies considered those meters extremely proprietary. They guard the
> technology like a soft drink formula. They are paranoid of someone figuring
> out the mechanism and letting the word out on how to cheat the power
> companies. That's probably why everything BUT the meter can be installed by a
> sub contractor. Your local power company may be different, which is why your
> school has so many meters. It would be interesting to see what they say when
> you ask for surpluses.
>
> See ya,
> Jim
> http://www.geocities.com/SoHo/Exhibit/8281/beamart.html
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
6718 Wed, 13 Oct 1999 15:40:01 -0500 [alt-beam] Re: BG motors for sale!! beam@sgiblab.sgi.com Richard Piotter
--------------03587F6BEFB7F4E45AF34BC2
content-transfer-encoding: 7bit
-----------
MIGHTY-MIGHT GEARHEAD MOTOR
2-24 VDC Reversible
50 mA, 40 in/oz max torque, 10 to 1400 rpm
Motor comes with external gear train 1-3.4" L x 1-1/16: W x 5/8" H
(easily removed). Motor size including built in gearhead is 13/16"L x
11/16" dia. shaft size 5/84" dia x 7/16"L Actual weight is 1 oz. unit
has two shaft and mounting holes, the external gear train has 3 holes for
mounting. New.
Shipping wt 1 lb.
TM97MTR3083...........$19.95
http://www.herbach.com/
-----------
Are these the motors you're selling?
PLA Turd wrote:
>
> Well if any one cares I got a small surplus of BG
> motors for sale. They're $30US each and $1US S&H for
> each motor.For a grand total of $31US for each motor
> with S&H. You got to move now because I only got 20
> of these left and when they're gone they're GONE!!!
>
> If your interested just get back to me off list at
> Mr_Roboto101@yahoo.com
>
> =====
>
> __________________________________________________
> Do You Yahoo!?
> Bid and sell for free at http://auctions.yahoo.com
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
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6719 Wed, 13 Oct 1999 14:22:35 -0700 (PDT) [alt-beam] Photovore.com??? beam@sgiblab.sgi.com Evan Dudzik hmm... I know, i was VERY ambitious about my page
http://members.xoom.com/Star_BEAM
but then I realized that it was more work than I
thought, with multiple sections and all... now that i
have been humbled with my first attempt, I propose a
more reasonable offer: an entire site for nothing but
all manner of photovores: no complicated news section,
no lists of failed subpages (examples: articles,
classifieds...) and other unnecessary pages... just a
main page that would link to more pv-related pages:
galleries, tutorials/circuits, and links to name a
few, possible like two more sections max. super
simple layout at first, no super large images on main
pages that take like 15 years to d/l, just info on
photovores, which I have found to be my all-time fave
so far (hmm, havent reached walkers yet...) I know now
to tell you all that It will NOT be the best BEAM page
ever... and that I almost certainly WONT be able to
update it each and every day like I did at first with
my other page. for now, I'll just stick to goals I
can actually achieve. anyway, let me know what you
think, I will probably start the page soon, let you
all know the link asap. if you have comments or ideas
or whatever, just reply!
Evandude
=====
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Getting a Byte: It Hz.
getting a Megabyte: It MHz.
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com
6720 Wed, 13 Oct 1999 05:32:23 +0000 [alt-beam] Symets beam@sgiblab.sgi.com emolson@capecod.net Hi, everyone. I'm just starting out in BEAM and robotics. I've been
looking at a lot of web sites, and I'm wondering if someone on the
list could give me some information about symets. I'd like to build
one because I have 3 nicely matched caps, and I currently only have 1
motor that works with my prototype solarengine, which seems like all
you need for one. However, I am kind of sketchy on exactly how the
symet works. Specifically, how does it move around? Does it just spin
around on the motor shaft?
Thanks in advance.
Eben Olson
6721 Wed, 13 Oct 1999 15:29:14 -0700 (PDT) [alt-beam] Re: Symets beam@sgiblab.sgi.com Lee Golden I built a *really* simple Symet, copying one that Paul
Beckingham designed a while back. Unfortunately his
page is down for some reason at www.beckingham.com.
If you want to, take a look at my Symet and its
description at:
http://www.geocities.com/leemon1/Bots/beambots.html
I've included a simple graphic that shows how the
parts are arranged on the back of the solar cell.
Other guys in the group here have designed *much* more
detailed and advanced Symets. If you are looking to
start simply, then something like mine would probably
be the easiest.
Have fun!
Lee Golden
--- emolson@capecod.net wrote:
> Hi, everyone. I'm just starting out in BEAM and
> robotics. I've been
> looking at a lot of web sites, and I'm wondering if
> someone on the
> list could give me some information about symets.
=====
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com
6722 Wed, 13 Oct 1999 15:39:08 -0700 (PDT) [alt-beam] heres the url of photovores online... beam@sgiblab.sgi.com Evan Dudzik photovores online... :-)
check out the pitiful start, expect more in a day.
http://surf.to/photovore
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com
6723 Wed, 13 Oct 1999 15:36:11 -0700 (PDT) [alt-beam] Re: Symets beam@sgiblab.sgi.com Evan Dudzik hi. I made one symet, and even though it didnt work
for lack of a solar cell, it was a great learning
experience. did you look at the www.solarbotics.com
symet construction page? i am not sure of the exact
URL, if you cant find it anywhere i can possibly find
it later. anyway, the symet has no choice but to
balance on two caps and the motor shaft at all times.
when the motor shaft spins, it is like a little wheel,
and it drags itself along on the caps... i think it
may be easier to see for yourself, try building just
the frame (caps and motor) and setting it down and
turning the shaft by hand... anyway.. bye!
--- emolson@capecod.net wrote:
> Hi, everyone. I'm just starting out in BEAM and
> robotics. I've been
> looking at a lot of web sites, and I'm wondering if
> someone on the
> list could give me some information about symets.
> I'd like to build
> one because I have 3 nicely matched caps, and I
> currently only have 1
> motor that works with my prototype solarengine,
> which seems like all
> you need for one. However, I am kind of sketchy on
> exactly how the
> symet works. Specifically, how does it move around?
> Does it just spin
> around on the motor shaft?
>
> Thanks in advance.
> Eben Olson
>
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com
6724 Wed, 13 Oct 1999 19:06:39 -0400 [alt-beam] Re:Photovore.com??? beam@sgiblab.sgi.com "Chris" <123abc@chek.com> Ok. I'm having some trouble soldering so much and taking it back apart, etc. (talking about my first microcore).
Does anyone know how to etch PCB by hand? I'd do it with a laser printer but I don't have one. And I don't have a lot of $$ (If I had some I wouldn't be doing BEAM), so is there a way to etch PCB by hand? If so any tutorials?
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6725 Wed, 13 Oct 1999 19:11:39 -0400 [alt-beam] PCB etching beam@sgiblab.sgi.com "Chris" <123abc@chek.com> Is there any way to hand etch PCB? What do I need to do it? About how much will it cost? Are there any tutorials on the web?
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6726 Wed, 13 Oct 1999 18:39:37 -0500 [alt-beam] Re: PCB etching beam@sgiblab.sgi.com Richard Piotter You need Copper Clad board, etching solution, something like steel wool
or fine sand paper to clean the board before working on it. You'll also
need a resist. the Easiest resist is paint or fingernail polish remover.
Radio shack sells rub on patterns, but the lines don't always hold. I
recomend getting a dry transfer kit from radio shack and use the pin
hole pads and the IC pads for the holes, and then for the lines, use
paint (acrilic craft paint is good, and you can peel it off) or
fingernail polish (you'll need acetone fingernail polish remover to get
it off, but it's easy to work with).
When done making your patern, use a GLASS, PLASTIC, OR RUBBER container
to pour heated etching solution into (It'll eat through metal). Put the
board in and allow it to etch for the proper amount of time. Time can
vary depending on temperature and how new the solution is. Expiriment!
Chris wrote:
>
> Is there any way to hand etch PCB? What do I need to do it? About how much will it cost? Are there any tutorials on the web?
>
> Win a LAPTOP Computer and get your FREE E-mail Account at http://mail.chek.com
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
6727 Wednesday, October 13, 1999 2:53 PM RE: Phototransistor switch 'beam@sgiblab.sgi.com' Wilf Rigter
>Hi Phil,
>
>The slotted type can be used for detecting "end of leg travel". The
>reflective type used in some faxes to detect paper, could be used for line
>following and edge detector applications. You can often find the slotted
>photo interrupter in printers and older 514 disk drives as well the fax and
>mouse you mentioned. Most use photo transistors for detectors and are
>usable in SEs as was shown by Bob Shannon or as relatively insensitive PDs
>as well by connecting the base-collector pins only.
>
>While a non-contacting switch is great since it never wears out, it does
>consume power even when the "switch" is not closed.
>Typically the LED draws 10ma continuous but with a power supply > 4V, two
>LEDs can be put in series to conserve power.
>
>regards
>
> Wilf Rigter mailto:wilf.rigter@powertech.bc.ca
> tel: (604)590-7493
> fax: (604)590-3411
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