Alt-BEAM Archive
Message #06015
To: "'beam@sgiblab.sgi.com'" beam@sgiblab.sgi.com
From: Wilf Rigter Wilf.Rigter@powertech.bc.ca
Date: Thu, 9 Sep 1999 19:42:14 -0700
Subject: [alt-beam] power_smart_head fest
content-transfer-encoding: quoted-printable
Hi Bumper,
What do you think of a little "t=EAte-=E0-t=EAte-f=EAte" to help you get yo=
ur head
together (groan!). If you can stand the occasional pun, I could help you
step by step through the process and posting the dialog on the list would
be interesting for others to follow. Attached is simplest schematic for the
Power_Smart head circuit re-organized a bit to make it more understandable.
That design may be a good starting point, assuming you have access to a
74AC04. If not, then a 74HC04 from Radioshack will work too but would
require an h-bridge such as the fetbridge described earlier. Otherwise the
240 version can be used but first we should agree on pin numbers, layout
component values, etc. The LEDs on the buffer outputs help a lot with
debugging and tuning. If you are interested you (or I) can make up a layout
drawing so that we can build this unit together, step by step and debug as
we go along. Sort of like a virtual BEAM workshop with anyone interested,
joining in and providing their feedback and progress reports. Let me know
what you think.
I was also thinking of some kind of head contest:
Competitive - where the heads go "head to head" wielding laser pointers
(well LED spotlights anyway) to blind or poke the other guys eyes out and
generally and try to screw up the other heads. (grin)
Cooperative - using laser pointers (or LED spots), draw beautiful patterns
on the ceiling while doing a little beam tech "pas de deux". =
regards =
=09=09Wilf Rigter=09mailto:wilf.rigter@powertech.bc.ca
=09=09=09=09=09
> <> =
=09 =
> -----Original Message-----
> From:=09Bumper314@aol.com [SMTP:Bumper314@aol.com]
> Sent:=09Wednesday, September 08, 1999 10:40 PM
> To:=09beam@sgiblab.sgi.com
> Subject:=09Re: PS HEAD V2
> =
> In a message dated 9/8/99 9:24:07 PM Pacific Daylight Time, =
> beamtastic@yahoo.com writes:
> =
> > Wilf, is there a big difference in the performance between v1 and v2 of
> > the PSH? I was just curious, since I built the v1 PSH and it performs
> > very well for me.. =
> > I'm sure this will be of interest to others, so I'm posting it to the
> > list..
> > thanks..
> =
> =
> Well me and my bad luck were unable to breadboard this little
> circuit...very =
> very simple circuit...sigh..so im curious if it could be because i used
> .1=B5f =
> caps instead of .01?
> =
> steve
Attachment: PSHEAD4.gif
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