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"Flicker Filter" for low fuel warning float switches?

 
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BigD(at)DaveMorris.com
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PostPosted: Mon Jan 23, 2006 10:27 am    Post subject: "Flicker Filter" for low fuel warning float switches? Reply with quote

Oh, I totally agree on that. In fact, if you whip one up, I'll probably
buy it too, because it saves me some time, which I find I don't have nearly
enough of.

Dave Morris
At 10:54 AM 1/23/2006, you wrote:
Quote:

<nuckollsr(at)cox.net>

At 09:19 AM 1/23/2006 -0600, you wrote:

>
><BigD(at)DaveMorris.com> float switches?
>
>Bob, I have a switch float in my header tank that I use to control the pump
>that feeds the header. (Other Dragonfly builders manually switch the pump
>on and off, watching a big red light, and install a huger overflow tube.)
>
>I was planning to install a 1 minute timer, so that when the float
>indicates a full tank, the pump switches off for 1 solid minute, before
>being allowed to come on again (if the float indicates it's time to run
>again). Basically a kind of debounce circuit. I think that can be done
>with a simple 555 circuit or even some of the off-the-shelf timer kits from
>QKits.
>
>Dave Morris

No doubt this is true. But one of the things I've noticed is that
the majority of OBAM aircraft builders are more interested in
turn-key solutions all packaged up with nice mounting bases and
d-sub connectors on the front. It also helps if they are small
and environmentally robust.

For individuals with a hanker'n to sling some solder and build
an enclosure to hold it, there are countless variations
on a theme that will do the task.

My goal is to craft a series of low cost packages that can
be taught to do a variety of tasks so that we don't re-invent
the whole wheel for each new task. A further goal is to offer
packages that are as flight-worthy as anything I would do
for a certified a/c customer.

If successful in this endeavor, the guy who is thinking about
ordering up a bag of parts and heating up the iron will be hard
pressed to show a return on investment (beyond the entertainment/
educational value) for rolling his own when versatile, low cost,
and robust solutions are becoming almost catalog items.

Bob . . .




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