Alt-BEAM Archive
Message #06511
To: beam@sgiblab.sgi.com
From: "Jason -" evenflow88@hotmail.com
Date: Fri, 08 Oct 1999 09:23:31 GMT
Subject: [alt-beam] Re: Beamant series
>From: Ian Bernstein
>Reply-To: beam@sgiblab.sgi.com
>To:
>Subject: Re: Beamant series
>Date: Fri, 8 Oct 99 00:34:31 -0600
>
> >Naturally I'd like to hear from anyone else who's got a BeamAnt page
>Well there's a bunch of photos of the BEAMants we built this summer in
>Los Alamos at:
>
>http://set.lanl.gov:80/programs/epsilon/
>
>under photo gallery.
>
well actually i wouldnt want to look at the pictures that much but i would
just like to know more on the behaviour and maybe get some tips wfrom
whoever who had built one......well i know u did ian...so could u let us
know how u put the IR beacon in your beamant....thanks....are u really busy
lately?
jason
______________________________________________________
6512 Thu, 07 Oct 1999 12:52:41 -0400 [alt-beam] Re: microcore with PNC beam@sgiblab.sgi.com "Sathe Dilip"
Sean Rigter wrote:
>
> No problem,
>
> just wanted to show you that whatever resources you have there are always novel
> solutions other than the "standard" designs. BTW the LSuCore does not need any
> resistors, anyone guess why?
>
SNIP
Due to the relatively weak source/sink capability of a LS gate output?
(have you increased the value of the capacitor to 10uF to compensate for
the lack of resistor?)
Dilip
--
Pl. remove *s from the e-mail address to reply
6513 Fri, 08 Oct 1999 09:03:10 -0500 [alt-beam] Re: movies beam@sgiblab.sgi.com Richard Piotter You probably don't have the proper video codec. I recomend downloading
Quicktime 4. It's MUCH better than any other player out there in
quality, and you'll only need your old players for the proprietary
formats. The only problems I've had with Quicktime is some MPEGs open
and some don't. There are several versions, a few of which it won't yet
decode. Quicktime 4 will decode both avi and mov files, as well as some
other stuff and some MPEG files. It's avaliable for both Macintosh and
for PCs. Best, there is no annoying banner window. it's a plain, feature
filled, down to earth media player. It also streams video! I watched the
live 2 hour speech introducing the new iMac and iMac DV models with out
any hang up over a 56K line. I don't know if you can do it on PCs, but
the Mac's video hardware is designed to expand any quicktime window to
full screen and still keep it looking decent. I think as long as you
have ATI graphics with 2D support, it should do it.
Another note... Anyone looking to make video should look into Quicktime
mov format. You can realy pack the data in there! A 30 second video with
near broadcast quality sound and video at 480x360 pixels with high
frame rates can be only 3.2 MB, which is pretty impressive. This is no
cheap video. If you want an example, go view one of Apple's movie
trailers or comercials at their web page (I used the G4 commercial as
the example above). 3.2 MB is big, but then again, there is AMAZING
quality in that file, and compared to other video files I've seen...
It's nothing! Dave's movie of that little walker was good quality at
240x180, 19 seconds, and again, decent frame rates, with a mere 1.5 MB
file! The same file in AVI is 3.76 MB!!! Quite a difference! I'm not
sure why, but a side by side comparison of the movies (Dave's AVI and
Dave's mov of the shokwalker) showed that the mov file looked brighter.
Not sure if the difference in brightness is cause of the encodingor
what, but it looked good! I recomend mov format for all videos. It also
won't kill you to download Quicktime 4 for Windows. It's a good product,
and I've used it. It's identical to the Mac version, and I've never seen
either one crash. More than I can say for the crappy Microsoft Media
player which has yet to work on my Mac!
jester96beam@iname.com wrote:
>
> What do I need to view those clips that Dave posted?? My computer tries to view it with media player, but all I get is the sound after I get a message saying "Unable to download an appropriate decompressor."
>
> Thanks
>
> Chris
>
> ---------------------------------------------------
> Get free personalized email at http://www.iname.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
6514 Fri, 08 Oct 1999 08:32:25 -0700 [alt-beam] Re: lcd name plates.... beam@sgiblab.sgi.com Sean Rigter Ahh! Seven segment type numerical LCDs say from a broken digital multimeter or thermometer. If you are lucky and the
letters of your name can be "expressed" in seven segments then you can use this display ( "W" is a problem!) . Power
consumption is virtually zero so it can be powered from 2 button cells for a couple of years. For a brighter but
power hungry display that requires no bicore you can use the more common LED seven segment displays but these do
require resistors to limit the current. (hey, laying a seven seg display on it's side can display a "W" !) The
attached shows a typical seven segment display. Connect the common "backplane" and the unused segment terminals to
one output of the bicore. Connect the other segment terminals to the other bicore output. Make sure you connect all
unused bicore chip input pins to ground or you'll drain the battery.
just a starter guys: next let's use the HC240 tristate function pins to flash 2 different messages!
wilf
Ian Bernstein wrote:
> Yo
>
> >Does anyone have a tutorial or info on how to make those cool LCD name tags?
>
> It's really quite simple. Just take the standard bicore like the one found on my web site.
>
> 1) Use 1M resister for the bicore
> 2) Use either solar cell or battery for (+) & (-)
> 3) Instead of a (M)oter use your LCD.
>
> You'll have to play around with which contacts of your LCD go to which lines and connect the right ones together.
>
> Laterz
>
> --------
> There is only one true "SyNeT"
> BEAM Online - http://www.beam-online.com
>
> +===============================================================+
> | DISCLAIMER: The above expressed views are not necessarily |
> | that of the author. In fact, he disclaims all knowledge of |
> | his statements and rebutes his own stated beliefs. That said, |
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