Alt-BEAM Archive
Message #08336
To: beam@sgiblab.sgi.com
From: Senior kyled@cruzers.com
Date: Fri, 17 Dec 1999 19:20:46 -0700
Subject: [alt-beam] Re: PCB iron on transfers
I've requested quotes tho from local places and they want 100 - 300 us
bucks! What are you paying? That is WAY too much when I could make them
for three dollars.
-Kyle
Dennison Bertram wrote:
>
> Stay away from Iron on Transfers. I don't care what people say, they just
> don't work. They seriously will be a huge dissapointment. Your better off to
> simply put some time and energy into a good design, and spend the extra
> bucks to have it fashioned at a real PCB etching facility. Seriously, I know
> you're going to have to do it the hard way a few times before you learn, but
> it pays off.
>
> dennison
>
> -----Original Message-----
> From: owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
> Behalf Of jester96@iname.com
> Sent: Friday, December 17, 1999 7:53 PM
> To: beam@sgiblab.sgi.com
> Subject: PCB iron on transfers
>
> I know you can get PCB Iron on transfers for laser printers, but what about
> inkjets???
>
> I work at a computer store, and we have T-Shirt transfers for inkjets. Would
> they work do you think or would the solution etch right through it? Has
> anyone tried it before?
>
> The only way I can make PCBs now is with a pen, and that it's a pain in the
> arse, so I am looking for something better. How much do cheap UV boxes cost?
>
> Thanks
> Chris
>
> ---------------------------------------------------
> Get free personalized email at http://www.iname.com
8337 Fri, 17 Dec 1999 20:30:56 -0700 RE: chloroplast Wilf Rigter
> Thanks to Lee Golden, here is a long overdue 1381 Chloroplast SE which is
> equivalent of the famous 34164 Chloroplast circuit. The trigger voltage
can
> be adjusted up to 7V (or more) and the reset voltage is determined by the
> suffix letter. For example, a 1381J resets at about 2.9 - 3.0V. The 1381
CSE
> comes in two versions, one for efficient low current motors and the other
> for cheap and nasty motors. The first circuit is simple and works well
with
> BGmicro and other efficient motors. The second circuit can be used for
both
> efficient motors but also for high current toy motors using a super cap
for
> supply. These cheap but inefficient motors cause a big voltage drop on the
> super cap from their high current requirement which can cause the 1381 to
> reset. BTW this also applies to the chloroplast circuit. This problem is
> avoided with a diode and cap for isolation and filtering at the 1381
> detector input. For currents over 500ma, use a mosfet with a lower Rds(on)
> than the 2N7000.
>
> regards
>
> wilf
>
>
> <>
>
> > -----Original Message-----
> > From: Mike Kulesza [SMTP:mikekulesza@hotmail.com]
> > Sent: Saturday, December 11, 1999 5:17 PM
> > To: beam@sgiblab.sgi.com
> > Subject: chloroplast
> >
> > So i need to make magbot as a gift for christmas... To make it using the
> > chloropast SE, all i do is connect the coils to where the motors go, and
> > put
> > the magnets in? Are there any precautions with respect to a chloroplast
> > magbot? How fast would it take to charge with a 2422 cell, 2200 uF cap,
at
> >
> > 1300 hrs on a clear day in the sun?
> >
> > ______________________________________________________
> >
8338 Fri, 17 Dec 1999 19:37:11 PST [alt-beam] OT:Car Remotes...Clarification beam@sgiblab.sgi.com "Jim Cook" I messed up, I wasen't clear, I think.
I am refering to the little key chain Car ALARM remotes, which lock and
unlock the doors, and set the alarm.
Any one know about those?
As for the Crystal it has 315M6, and 591. Any guess which is the freq.?
______________________________________________________
8339 Fri, 17 Dec 1999 22:49:23 -0500 RE: BEAM Flocking (HPV) Dennison Bertram
> I can't provide any website links right now for this but awhile ago
someone
> made exactly that. A flock of analog 'crickets' who chirp for each other.
> And get silent if they hear other noise. and then they wander around
> listening for each other's chirps. And if things get quiet they get
quieter.
> Until one randomly chirps and then they all get happy and chirp. Anyway,
it
> was really cool.
>
> dennison
>
> -----Original Message-----
> From: owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
> Behalf Of Bruce Robinson
> Sent: Friday, December 17, 1999 1:05 AM
> To: beam@sgiblab.sgi.com
> Subject: Re: BEAM Flocking (HPV)
>
>
> > Richard Caudle wrote:
> >
> > Hello all!
> >
> > Wilf brought up something interesting the other day and IMHO
> > is warrants discourse: Photovore Flocking.
> >
> > Migrating geese use a kind of location sound when flying in
> > formation. AFAIK, it's just an "I'm here!" kind of thing. It should
> > be relatively easy to build this kind of thing into a fairly
> > un-complicated Photovore. My thinking is that there has to be a good
> > BEAMish solution.
> >
> > There needs to be a number of systems to the Herd PhotoVore (HPV).
> >
> > 1. Battery Power with solar charging capabilities!
> > 2. Auditory sensors (for positive audiotropism)
> > 3. Vocalization
> > 4. Locomotion ('natch)
> > 5. Vision (for positive phototropism)
> > 6. Collision avoidance (feelers)
>
> For a jump start on sound capabilities, check out Steve Bolt's "Spider"
> at:
>
> http://www.xs4all.nl/~sbolt/e-spider.html
>
> Steve incorporates vision, sound and IR "radar" for his sensors. Lot's
> of detail, circuits, etc. As he uses programable hardware, you may want
> to adapt his ideas to BEAM (analog) technology.
>
> Bruce
>
>
Home