Alt-BEAM Archive
Message #07938
To: beam@sgiblab.sgi.com
From: BotDoc botdoc@yahoo.com
Date: Tue, 23 Nov 1999 11:36:07 -0800 (PST)
Subject: [alt-beam] photowalker
Wilf,
You are the man. The schematic that you posted last
night works like a peach. A lot of my hair thanks you
as they get to hang out and party on my head a while
longer. I put the circuit (minus the head motor) on
my walker and it does display phototropic abilities.
If the light is off to the side, it walks that way
then straightens out when going directly to it (one of
the led's starts blinking away when it is locked on...
kind of helpful and cool to see). I'll put the head
motor on later on today and start to fiddle with it in
that way. Just had to make sure it could walk
phototropically first (who said you can't make a
phototropic 2 motor walker?). I am not quite sure how
I am going to make the body keep up with the head,
that could pose some sort of a problem as the head is
going to be in the front of the bot. I thought that
maybe some sort of one shot nv that diables the head
motor when the body is swinging around to allow it to
catch up might work but will work on it later. I'll
let you know how the expirementing goes with it.
Thanks again Wilf, you made my day... or week rather.
Justin
=====
A motor is a robot waiting to happen
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7939 Tue, 23 Nov 1999 15:21:45 -0500 Parallel 3904's Craig Limber
> Hi there;
>
> Forgive my newbiness, I am just getting into this....
>
> Would running transistors in parallel effectively lower the voltage drop
> across the transistors that run the motors? The reason I am asking is
that
> for the speed controls in the electric model airplanes I build/fly the
> designers use multiple FETs in parallel to lower the effective resistance.
I think we do this more to handle more ampers in the ESC.
> I was wondering if this principal might be applicable/useful to these
little
> robots to give them just a little more oomph.
>
> BONUS QUESTION:
>
> Does anyone know of any BEAM/Robotics events/contests/get-togethers that
> happen in the Calgary, Alberta, Canada area?
>
> Craig
>
looks like alot of people are going to get bonus points :)
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