For a few horsepower or more, you can't go wrong with a Curtis controller
- back to eBay, about $100 gets you 36 volts and 275 amps. A Curtis model
1505 is about half that.
Once again I encourage all to use "off the shelf" stuff.
On Sun, 5 Dec 2004 10:42:40 -0500 "Dan H." <
jmachine@adelphia.net>
writes:
> Warren,
> I was born in the year of...... well let's
just say, a long time
> ago, and I know I'm not a monkey either.
I have what it took to build
> "Persistence" and have some old
electronic experience also, but still wouldn't
> know how to build the
speed controller you're talking about.
>
> Please keep in mind,
we're not all from the same mold. It would be
> more useful to
me, and probably many others on the list, if your postings
> did more
describing and less assuming. For instance, I know your
>
planning a sub, that's obvious, but I still don't know the exact meaning of
> OSS. I do happen to know what a 555 timer is but how many
others do, I'm not
> sure. I also know what caps are. They
are used to smooth out electrical
> pulses, used to block off the ends
of pipes, and what I used to put in my
> hand gun when I donned my
cowboy hat and ran around the back yard many years
> back. I know
I'm exaggerating here but only trying to make a point.
>
> You
are a skilled person and I know I can learn things from you.
>
Please try
> to post in full descriptions without assumptions and use
terms
> instead of "
> alphabet soup," at least the first few
times you post about
> something so we
> can get up to
speed.
>
> About a speed controller, I for one would be
grateful if you'd draw
> up
> schematics for a few that the
average guy can build and post them,
> in
> particular, one for
36volts @ 100 amps for forward and reverse..
>
> Sorry if I sound
mentally challenged to you.
> Dan H.
> ----- Original Message
-----
> From: "Rick and Marcia" <
empiricus@telus.net>
> To:
<
personal_submersibles@psubs.org>
>
Sent: Sunday, December 05, 2004 3:19 AM
> Subject: Re: [PSUBS-MAILIST]
[Fwd: take some time and view my web
> sites...]
>
>
> > Warren - I was born in the year of the monkey (per your remark
> below) but
> I
> > still have some
questions!!!
> >
> > If I read your email correctly, it's
possible to build a motor
> speed
> control
> > for
under $10.
> >
> > I have a joy stick (USB compatible) that
I'm thinking of hooking
> up
> > mechanically to some pots for
static maneuvering (sidle, pitch,
> yaw,
> heave).
> >
Would I be able to use the USB function without having to rely on
>
software?
> > Or am I better off to just cut the USB cord and go with
my
> original idea
> of
> > a mechanical
connection?
> >
> > Why the 555 timer? Caps?
FET? PWM? Vas ist?
> >
> > I'm thinking of using
simple 12V bilge pumps to generate water
> jets for
> > static
thrust but they're simple on/off's. Variable speed
> controls on
the
> > pumps would be nice if it's simple enough to do.
>
>
> > Circuit diagrams?
> >
> > Rick
Lucertini
> > Vancouver, Canada
> >
> >
>
>
> >
> > ----- Original Message -----
> > From:
"Warren Greenway" <
opensourcesub@yahoo.com>
>
>
> > Subject: Re: [PSUBS-MAILIST] [Fwd: take some time and view
my web
> sites...]
> >
> >
> > > Thanks
for some real good feedback. I would like to
> > > point out,
though, that by fly-by-wire I meant using
> > > the electric drive
motors directly. If it is
> > > all-electric then you can upgrade
from switches to PWM
> > > via potentiometer, to digital, as you
see fit or can
> > > afford. For instance, you can use a simple
555 timer
> > > IC with a potentiometer a couple of caps and a FET
and
> > > get a PWM with dial-a-speed ability for under
$10.
> > > Cheap upgrade, reliable, can be built by a monkey,
but
> > > it has to be all-electric for this to be viable.
So,
> > > that is all I meant.
> >
> >
>
>
> >
> >
>
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