Re: [AMC-list] Fan controller

["Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>]

Tom,

Thanks for responding, sorry it took a few days for me to get back to you. I
was pretty busy putting gauges in the white Javelin.

Interesting, I had forgotten you are an electronics wizard.  I thought you
might have a handle on a much improved unit, which is sounds like you do.
The unit you made is just too cool. I sure wish I had your electronics
knowledge. I just had two years of electronics in High School which ain't
gonna cut it when it comes to fabbing up your own controller.

Maybe I'll just get a factory made unit.
The company that I bought the fan unit and aluminum radiator from make a
controller, I guess I'll just have to bite the bullet and invest in one.

Armand


----- Original Message ----- 
From: "tom jennings" <tomj@xxxxxxx>
To: "AMC, Rambler, Nash, Jeep and family" <amc-list@xxxxxxxxxxxx>
Sent: Friday, May 07, 2010 10:44 PM
Subject: Re: [AMC-list] IT RUNS.


> I'm curious about your fan controller. I've got a dual electric fan setup
> > and aluminum radiator set to be installed in the Javelin. I don't have a
> > fan
> > controller. Can you give me more details please, such as manufacturer,
> > where
> > did you get it, how does it interface with the old wiring, anything that
> > might help me.
> >
> > I made it myself. It's based around an Arduino microcontroller, some
"solid
> state relay" chips and software to drive it. It picks temperature info and
> engine on/off from the Stewart Warner sender. I was going to make it work
> with the factory sensor but I didn't feel like solving the make/break
> regulation problem (long time scale filtering in software, or hardware). I
> built it into the old generator regulator box.
>
> It's hard to believe no one makes such a thing for sale. It's only got
three
> wires -- battery, fan, sensor. One knob for set point.
>
> I'll post the schematic and code later. My motor controller is a bit
> embarrassing but I had the chips (VN05's) already so I used those. They
run
> hotter than I like.
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