[simpits-tech] Switchs, Rotary and pot

[fitchett]

No, rotary encoders are more akin to a switch, rotation produces a series
of electrical pulses.  Typically rotary encoders have a finite number of
pulses per revolution that can be resolved; they can also rotate in either
direction indefinitely.  Some encoders will only return a relative change
in position, clockwise or counterclockwise.  (incremental)  Absolute
encoders will return the position of the shaft.

Potentiometers can only be rotated in either direction a fixed amount;
typically ranging from 1/2 a turn to a dozen or more.

Pots are cheaper if you need more precision, and can accept the limitation
on travel.  Encoders are better for aircraft radios and detecting how
far/fast a motor is turning.

Chester

> Thanks alot for the explanation ;o)
>
> I found the F16 panels at simpits.org...
>
> Did i get it right - rotary encoders = potentiometers ??
>
> Thanks
> Frank !
>
> ----- Original Message -----
> From: "Andreas Fransson" <andreas.fransson@post.utfors.se>
> To: <simpits-tech@simpits.org>
> Sent: Monday, August 05, 2002 9:09 PM
> Subject: Re: [simpits-tech] Switchs, Rotary and pot
>
>
> > Frank,
> >
> > 3-way switches are (usually) on-off-on. With or without automatic return
> to
> > center position (not sure what the english expression for this would be).
> >
> > Rotaries, if you mean rotary switches and not rotary encoders, may or may
> > not have limits. A couple I have here for example do not. They go all the
> > way around. What they do is just rotate a common ground around a number of
> > connections. Like a "normal" switch but with many more positions. Mine
> have
> > 12 I think. You could say that they are "all-on" in the sense that one
> lead
> > is always active. Encoders are a different breed altogether. They are
> > commonly used to sense motion (rotation) rather than indicate switch
> > positions.
> >
> > "Pots", or potentiometers, are basically variable resistors. I you use one
> > with EPIC, or as a replacement for a joystick pot, it is 100 ohm linear
> pots
> > you want.
> >
> > If you use the EPIC, the kind of switches you use are almost unimportant.
> > EPL (the EPIC programming language) is very flexible. It's not at all like
> > the standard joystick momentary on/off pushbuttons.
> >
> > What aircraft (or whatever) panels are you looking for?
> >
> > Andreas
> > http://valhallainc.d2g.com
> >
> >
> > From: "Frank Riedel" <frank@rezultat.dk>
> > > Hi All !
> > >
> > > 3 way switchs - is that off-on-off  or ????
> > > Rotary - is that 360 dg. or ???
> > > 2 way switchs - is that on-on  or ???
> > > Pot - is that a normal potmeter 100 ohm or  ???
> > > Is EPIC control all those switchs nomatter if it is on-of or on-on ???
> > >
> > > Do anyone of you guys have a link to a page where i can read about it
> ???
> > >
> > > and do anyone have a set of drawings of panels without knobs on ????
> > >
> > > thanks for all your help... i'm on the road for my first real pit ;o)
> > >
> > > Frank
> >
> >
> >
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