Alt-BEAM Archive
Message #01662
To: beam beam@corp.sgi.com
From: Sean Rigter rigter@cafe.net
Date: Sun, 21 Mar 1999 14:13:37 -0800
Subject: [alt-beam] Flash SE
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Hello everyone,
Here is a little addition to the library of solar engine circuits.
It uses commonly available parts (no fancy threshold detectors or
FLEDs).
This one is based on a circuit which I designed in 1969-1970 as a
replacement for a mechanical light flasher. Hundreds of these were
build for my company and I still use it when I need a little attention
getting LED or incandescent strobe light. It's main claim to fame is
simplicity, low parts count, wide supply voltage range (2V-24V) and with
only 2 terminals it connects "in line" with the load and power supply.
The FLASH SE circuit with the components shown is suitable for driving
the small lens motor specified but high gain/high current transistors
can be substituted for larger load currents. A variation uses an N type
POWERFET output transistor. The capacitor voltage ratings should chosen
to match the supply voltage.
enjoy
wilf
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1663 Sun, 21 Mar 1999 15:30:38 -0800 [alt-beam] Re: input and questions JojoR689@aol.com James Niemasik JojoR689@aol.com wrote:
> I've been gone for a week, so maybe you guys were right about someone being
> gone(screwing up the list). I had 200 messages! Which brings up another point-
> half of them I just deleted half of them from the start (All the stuff for
> sale, green thumbs, and those moon ones) I don't have a problem with them,
> but if people are going to stop sending general robot info, then is there a
> general robotics mailing list? Also- about the guy who sent in the email about
> multiple responses for the same thing- I like that, because it is like a
> conformation. You don't buy something after seeing it once- you check out your
> sources and reviews(at least you should if it is expensive!). Now for my
> questions-
>
> 1. Where is there info about aquabots?
There isn't much information about aquabots, but go to Solarbotics
(http://www.solarbotics.com)
and look at "APV's" in the miscellaneous section of
the pulldown menu. Also, I could've sworn that I saw an aquavore at BEAM Online
(http://www.beam-online.com),
but I can't find it now - try looking there, though.
>
> 2. I have an OWI MOVIT Spider walking kit from a long time ago- Could it be
> used as a base for a beam walker?(2 motors, available at the robot store)
Don't know about this, but it sounds ok.
>
> 3. I'm going to Free form Chiu's Photopopper- What glue works best, does the
> photopopper work well?
For gluing parts together, epoxy works well, either all-around epoxy or plastics
epoxy. Superglue and crazy glue work too.
>
>
> Thanks a lot,
> Will
> JOJOR689@AOL.COM
> "http://members.aol.com/jojor689/Beam.html"
--
* James Niemasik
* jfn@best.com
* James' BEAM Robotics Page:
* http://welcome.to/jamesbeam
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