Alt-BEAM Archive
Message #12894
To: beam@corp.sgi.com
From: Justin JAF60@student.canterbury.ac.nz
Date: Sat, 01 Apr 2000 16:57:07 +1200
Subject: [alt-beam] Re: Solar Roller, Speed and Times
>Anyone know if there is a list of times for the solar roller competitions?
>Im currently building a few and wanted to give them a rating using speed
>and times based on winners of solar roller competitions?.
Can I take it from this you're entering the NZ beam event? :-)
From Dave Hrynkiw - "I can tell you that the best times in direct
sunlight have been around the 35 second mark. But this was in India,
where the sun war particularly brilliant. As for halogen times, if you
can beat 2 minutes, you're very competitive."
12895 Fri, 31 Mar 2000 23:09:05 -0800 [alt-beam] replies "Joe"
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Hi,
I've noticed that this list (as separate from my other list membership), ha=
s a strange reply function.
Normally, I can go to Reply, and send a private e-mail to the sender...OR g=
o to reply all, and respond to the list members.... With BEAM...it all goes=
to the entire list, regardless of how I address it! Is that normal? Or is =
Bill getting back at me for some obscure offense that I'm not aware of???
Joe
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>
>
I am basically useing the BEAM circuits ~ or more to the point ~ the
modification of them ~ as the basic clock for the robot ~ one problem with
what I have seen in my applications was that the BEAM circuits do odd things
sometimes ~ I have a textronix o-scope and when testing the motor/gate the
clock would see for lack of better words ~ "a hickup..........??" ~ it may be
some diference in the manufaucturing tolerances of the caps ??? ~ i used all
1% resistors ~ or it could be in the gate of the 240 it's self ~ not too sure
~ I have changed out the 240 chip with a new one at least 5 times and have
used different caps.
most of the time it works (ie clocks) correct
could be all the soder fumes ~ or the coffee ~ lol
From all I have read on this list from other people ~ it must be an inherent
trate of BEAM circuits to have this ODD trend in charge of the caps and fire
time on the gate differences ~ maybe even by design???
or dare i say a personality trate??? ~ some genitic flaw in a neuron ~ lol
but anyway ~ $90 is a wee bit out of the budget for this gye im building ~ my
wife thinks it's silly enough ~ lol
steve
~ I thought about what you mentioned above ~ one of the students in a lab
used a sim clock to what you mentioned ~
12897 Sat, 1 Apr 2000 06:48:22 -0500 [alt-beam] pictures "Steve Jones"
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Hi all
The pictures for the smt boards can be found at www.auracom.com/~skylift l=
ook at Smt.jpg
Cheers Steve Jones
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>
www.auracom.com/~skylift =">http://www.auracom.com/~skylift">www.auracom.com/~skylift =
look =
at Smt.jpg
Cheers Steve Jones
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