By "a monkey could make it", I meant "make", not
design. LOL! Here is the trick, I haven't designed a
motor controller yet, since I need to know more about
what it will need to do. Also, there are quite a few
designs out there. The book TTL cookbook is a mujst,
and has schematic to build simple PWM timers, all you
need to do is add FETS. I actually have a pretty good
PWM design I have used that was produced by a friend
who is a professional EE. I will dig it up, scan, and
post it.
No, I don't think you are mentally challenged! You
just need a couple more books, and you'll be building
circuits with the best!
One problem that I have is that I am accustomed to
designing circuits that require a PCB, which is a
whole different ball of wax. The PCB would be great,
but then we would have to organize the purchase of 50
or a 100 at a time and how to distribute them, etc. It
may be better to try and change gears a bit and select
components that will allow a "perf-board" approach.
One final thing, I want to share a superb parts source
with you PSUBBERS www.goldmine-elec.com
Get their catalog! They sell motors, electronics, and
other usefull goodies at dirt-cheap prices!
Warren.
--- "Dan H." <jmachine@adelphia.net> wrote:
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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