Alt-BEAM Archive
Message #08431
To: beam@sgiblab.sgi.com
From: "Travis D." beam_bot@yahoo.com
Date: Sat, 18 Dec 1999 20:20:42 -0800 (PST)
Subject: [alt-beam] Re: Solarbotics Miller Engines
Maybe I missed something out of those 75!!! posts
within the last couple days....but what EXACTLY is the
13812???
--- Dave Hrynkiw wrote:
> At 03:10 PM 12/18/99 , Darrell Johnson wrote:
> >heh..
> >*I* like your circuit Dave.. I'm actually wiring it
> up
> >right now to use on my unicore BEAMant. I'm
> assuming
> >that I can use the output to drive the enable pins
> of
> >a '240 right?
>
> Yup, you can, but here's a better answer:
>
> Go get yourself a selection of 13812 triggers - they
> are active LOW (ie:
> will turn on a '240). Just dump the fet/transistor
> of the MSE, use a 13812
> instead of a 1381, and you have a configurable turn
> on voltage/time on
> configurable circuit using 1 device, 1 diode and 1
> cap (plus
> solarcell/storage cap).
>
> It's tidier an _very_ efficient. I'm using it on
> some new designs.
>
> Regards,
> Dave
>
---------------------------------------------------------------
> "Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U,
> K,I,_W_. Yes,
> that's right. Yes, I know it looks like "HOCKYRINK."
> Yup, only
> 2 vowels. Pronounciation? _SMITH_".
> http://www.solarbotics.com
>
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8432 Sat, 18 Dec 1999 20:50:10 -0800 (PST) [alt-beam] Re: Solarbotics Miller Engines beam@sgiblab.sgi.com Darrell Johnson A 13812 is simply a 1381 with an inverted output.
a 1381 outputs a *high* when it's triggered, and 13812
outputs a *low* which is a wonderful thing when you
want to play with enable pins.
same price, same section of the Digikey catalog.
-darrell
--- "Travis D." wrote:
> Maybe I missed something out of those 75!!! posts
> within the last couple days....but what EXACTLY is
> the
> 13812???
>
=====
____________________________________
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http://www.geocities.com/beamtastic/
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8433 Sat, 18 Dec 1999 22:10:22 -0700 [alt-beam] Re: Solarbotics Miller Engines beam@sgiblab.sgi.com Dave Hrynkiw At 09:20 PM 12/18/1999 , Travis D. wrote:
>Maybe I missed something out of those 75!!! posts
>within the last couple days....but what EXACTLY is the
>13812???
Look it up on the 1381 datasheet on our website. Instead of staying at
ground until when the trigger voltage is met (1381) and goes to Vcc (+), it
stays at Vcc until the trigger voltage is met and goes low to ground
(13812). There's also a 13811 that is "open collector" output too.
Truly a useful device to have a few of! (No, we don't stock them....yet!)
-Dave
---------------------------------------------------------------
"Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
2 vowels. Pronounciation? _SMITH_".
http://www.solarbotics.com
8434 Sun, 19 Dec 1999 23:23:02 -0600 [alt-beam] Re: Bi ped beam@sgiblab.sgi.com SG Hi Ian!
Well my reply is most certainly non-beam but I hope it is helpful.
Elmo and I are looking into some robotic arm applications for are
Beam-heads (more on that later) and I have ran across some info that might
be helpful.
First of all, you really don't need a stamp to run your servos you can
control them directly from your computer with something new and very very
cool in the world of servo control. Its called a mini sscII servo
controller from Scott Edwards electronics at:
www.seetron.com/ssc.htm
A single Mini SSC II will control up to 8 individual hobby servo motors.
Combine two Mini SSC II's together and you have a whopping total of (16)
hobby servo motors at your command.
it can also be ran from a stamp if you want, but there are many controller
softwar applications to choose from with this .
The best i found is at:
http://www.rentron.com/Robo-Ware.htm
which can run up to 16 servos independantly. The graphical interface is
very simple. The software has the abilty to save your scripts and run them
repetivly as many times as you want.
Of course you can make your own software and there is an excellent step by
step process described at:
http://www.rentron.com/Mini-ssc.htm
there are even some sofware applications free around on the net for the SSCII.
If you already knew all this i hope i didn't insult you. I actully found
it interesting how servos are being manipulated nowadays with out page and
pages of script in machine language!
-Sparky
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