[simpits-tech] Switchs, Rotary and pot
Frank Riedel
simpits-tech@simpits.org
Tue, 6 Aug 2002 13:48:12 +0200
LOL ;o))
----- Original Message -----
From: "Marv De Beque" <mdebeque@woh.rr.com>
To: <simpits-tech@simpits.org>
Sent: Tuesday, August 06, 2002 12:45 PM
Subject: Re: [simpits-tech] Switchs, Rotary and pot
> Ah, too far to drive. ;-)
> --
>
>
> > From: "Frank Riedel" <frank@rezultat.dk>
> > Reply-To: simpits-tech@simpits.org
> > Date: Tue, 6 Aug 2002 10:42:57 +0200
> > To: <simpits-tech@simpits.org>
> > Subject: Re: [simpits-tech] Switchs, Rotary and pot
> >
> > I'm in Denmark :o)
> >
> > Frank
> >
> > ----- Original Message -----
> > From: "Marv De Beque" <mdebeque@woh.rr.com>
> > To: <simpits-tech@simpits.org>
> > Sent: Tuesday, August 06, 2002 2:38 AM
> > Subject: Re: [simpits-tech] Switchs, Rotary and pot
> >
> >
> >> You are doing fine with the English. I had a rotten time with English
in
> >> school (and I am an American). So, I had to work hard catching up with
my
> >> writing and reading skills in college. ;-)
> >>
> >> Sounds like you are doing well on your design.
> >>
> >> What country do you hail from?
> >> --
> >>
> >>
> >>> From: "Frank Riedel" <frank@rezultat.dk>
> >>> Reply-To: simpits-tech@simpits.org
> >>> Date: Tue, 6 Aug 2002 01:15:04 +0200
> >>> To: <simpits-tech@simpits.org>
> >>> Subject: Re: [simpits-tech] Switchs, Rotary and pot
> >>>
> >>> Hi Marv !
> >>> I'm at start of and F16 pit... FANTASTIC RESOURCE ON THE WEB (THANKS)
> >>> trying to build a list of parts to put on to my panels... - thats why
> > all
> >>> the qustions.
> >>> I just sendt all of DXF to plastic "cut-out" company.
> >>> all made of clear 4mm plastic. i'll place a transperant
> >>> printet panel on top to get the backlight of the panels...
> >>> The tube is no prob.
> >>> so... next step for me is to learn more about EPIC and
> >>> all that follows... wireing all the switches and rotary, lamps etc.
> >>> Do not have an EPIC yet...
> >>> Overall goal is to finish all panels first...
> >>> second get the EPIC incl. modul (what i need here i'll find out ;o))
> >>> third, i'll mount it all in the tube and start wireing it up...
> >>> and last... get the software running ;o) (witch i'll get more info
from
> > you
> >>> guys over the winther)
> >>> so, it like building a RC-model... little by little it all come
toghter
> > ;o)
> >>> Hope my english is okay :o))
> >>>
> >>> Frank
> >>>
> >>> ----- Original Message -----
> >>> From: "Marv De Beque" <mdebeque@woh.rr.com>
> >>> To: <simpits-tech@simpits.org>
> >>> Sent: Tuesday, August 06, 2002 12:31 AM
> >>> Subject: Re: [simpits-tech] Switchs, Rotary and pot
> >>>
> >>>
> >>>> That is an open question.
> >>>>
> >>>> The answer is, it depends.
> >>>>
> >>>> However, you have not qualified the exact application, so it is hard
to
> >>> give
> >>>> you a good answer.
> >>>>
> >>>> However, since I am constructing a F-16 cockpit, I can tell you what
I
> >>> plan
> >>>> to use. I will use a potentiometer for almost all of my applications
> >>> where
> >>>> there is a knob. Except....
> >>>>
> >>>> ... the caveat is there are many knobs that use a rotary switch and I
> > will
> >>>> use a rotary switch where it is required. I think you know what a
> > rotary
> >>>> switch is, but if not, it is a mechanical switch that rotates to
preset
> >>>> positions.
> >>>>
> >>>> There are not too many places where an encoder will be applicable in
my
> >>> sim.
> >>>> I may possibly use them for the ICP panel that sticks in the pilots
> > face.
> >>>> There are 4 thumb wheels that control contrast, brightness, and other
> >>>> functions on the HUD. An encoder may be physically easier to mount
> > than a
> >>>> pot in those instances.
> >>>>
> >>>> Encoders require more expensive circuitry to operate than a pot.
> > General
> >>>> rule of thumb is that there should be a good reason for using an
> > encoder
> >>>> where normally a pot will not do.
> >>>>
> >>>> I would recommend a pot.
> >>>>
> >>>> That being said, from the scope of the questions you are asking, I
> > wonder
> >>>> where you are at in your project and what your project goals are? I
> > ask
> >>>> because I get a sense that you might be putting the cart before the
> > horse.
> >>>>
> >>>> What is your goal and what is your plan to get there?
> >>>>
> >>>> I am sure that you can get all the help you need right here, but it
is
> >>> good
> >>>> to get the basics first, outline your goals, and then we can help you
> >>>> execute your plan (or at least help you get a plan together).
> >>>>
> >>>> Marv
> >>>> --
> >>>>
> >>>>
> >>>>> From: "Frank Riedel" <frank@rezultat.dk>
> >>>>> Reply-To: simpits-tech@simpits.org
> >>>>> Date: Tue, 6 Aug 2002 00:09:33 +0200
> >>>>> To: <simpits-tech@simpits.org>
> >>>>> Subject: Re: [simpits-tech] Switchs, Rotary and pot
> >>>>>
> >>>>> Great exampels ;o)
> >>>>> GOT IT ;o)
> >>>>> BUT - can i use POT instead of ENCODERS in my pit ???
> >>>>>
> >>>>> Frank
> >>>>>
> >>>>> ----- Original Message -----
> >>>>> From: "Marv De Beque" <mdebeque@woh.rr.com>
> >>>>> To: <simpits-tech@simpits.org>
> >>>>> Sent: Monday, August 05, 2002 11:57 PM
> >>>>> Subject: Re: [simpits-tech] Switchs, Rotary and pot
> >>>>>
> >>>>>
> >>>>>> No.
> >>>>>>
> >>>>>> A pot (short for potentiometer) is a device that rotates over a
given
> >>>>>> portion of a circle. This is usually about 270 degrees, but there
> > are
> >>>>>> multi-turn pots that rotate 5, 10, or 20 turns from lock to lock.
> >>>>>>
> >>>>>> A pot is nothing more than a resistor that can be changed from zero
> >>>>>> (usually) to its maximum value. 100,000 Ohms is typical for
> > simulator
> >>>>> use.
> >>>>>>
> >>>>>> A pot, theoretically, has an infinite adjustment between its two
> >>> extreme
> >>>>>> values (i.e., 0 to 100,000 Ohms). So, like a faucet (in good
working
> >>>>>> order), you can adjust the flow to any value in between.
> >>>>>>
> >>>>>> A rotary encoder is different. It is a device that rotates like a
> > pot,
> >>>>> but
> >>>>>> instead of acting like a variable resistor, it sends out a set of
> >>> pulses
> >>>>> as
> >>>>>> the knob turns. It is sort of like putting playing cards on the
> > forks
> >>> of
> >>>>> a
> >>>>>> bicycle and turning the wheel. As each spoke passes, an audible
> > click
> >>> is
> >>>>>> heard (a pulse). You can count the pulses and then determine how
far
> >>> the
> >>>>>> wheel has rotated. You need two two playing cards slightly offset
in
> >>> an
> >>>>>> angular fashion to tell which direction the wheel is rotating. By
> >>> looking
> >>>>>> at which card clicks first you can tell direction of spin.
> >>>>>>
> >>>>>> The thing about encoders is that they have a "granularity". Unlike
a
> >>> pot
> >>>>>> which is infinite, there are finite steps to an encoder. There may
> > be
> >>> any
> >>>>>> number of steps you can get from a few to several hundred steps per
> >>>>>> revolution. You can resolve the rotation only down to the step,
but
> >>> you
> >>>>> can
> >>>>>> not tell how much an encoder rotates between step steps (i.e., a
half
> >>>>> step).
> >>>>>>
> >>>>>> Most encoders do not remember their positions when power to the
> > system
> >>> is
> >>>>>> turned off. So, the system must somehow save the last known
position
> >>> if
> >>>>> it
> >>>>>> is to pick up where it left off at power down. A pot has the same
> >>>>>> resistance whether the system has power or not.
> >>>>>>
> >>>>>> A pot almost always has a mechanical stop. Resistance can only go
so
> >>> far.
> >>>>>> An encoder does not necessarily have a mechanical stop and can be
> >>> rotated
> >>>>>> continuously without stopping.
> >>>>>>
> >>>>>> An example of an encoder is a computer mouse (at least the old
ones).
> >>>>> Some
> >>>>>> new car stereos have them too.
> >>>>>>
> >>>>>> Two different animals that can be used in similar ways and each has
> > its
> >>>>>> advantages.
> >>>>>>
> >>>>>> Sorry for the long message, but I am short on time.
> >>>>>>
> >>>>>> Marv
> >>>>>> --
> >>>>>>
> >>>>>>
> >>>>>>> From: "Frank Riedel" <frank@rezultat.dk>
> >>>>>>> Reply-To: simpits-tech@simpits.org
> >>>>>>> Date: Mon, 5 Aug 2002 23:35:45 +0200
> >>>>>>> To: <simpits-tech@simpits.org>
> >>>>>>> Subject: Re: [simpits-tech] Switchs, Rotary and pot
> >>>>>>>
> >>>>>>> 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
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> _______________________________________________
> >>>>>>>> Simpits-tech mailing list
> >>>>>>>> Simpits-tech@simpits.org
> >>>>>>>> http://www.simpits.org/mailman/listinfo/simpits-tech
> >>>>>>>> To unsubscribe, please see the instructions at the bottom of the
> >>> above
> >>>>>>> page. Thanks!
> >>>>>>>
> >>>>>>>
> >>>>>>> _______________________________________________
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> >>>>>>> To unsubscribe, please see the instructions at the bottom of the
> > above
> >>>>> page.
> >>>>>>> Thanks!
> >>>>>>
> >>>>>> _______________________________________________
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> >>>>>> To unsubscribe, please see the instructions at the bottom of the
> > above
> >>>>> page. Thanks!
> >>>>>
> >>>>>
> >>>>> _______________________________________________
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> >>>>> Thanks!
> >>>>
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> >>>
> >>>
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> >>> Thanks!
> >>
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> > page. Thanks!
> >
> >
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