Re: [PSUBS-MAILIST] [Fwd: take some time and view my web sites...]

["Rick and Marcia" <empiricus@telus.net>]

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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