On Sunday, November 21, 2021 at 3:02:54 PM UTC-5, Baron wrote:
> Searcher7 prodded the keyboard with:
>
> > On Saturday, November 20, 2021 at 5:15:15 AM UTC-5, Baron wrote:
> >> Searcher7 prodded the keyboard with:
> >> > I'm working on a custom project that involves potentiometers and
> >> > picture adjustments on the monitor they are connected to.
> >> >
> >> > To determine whether or not the potentiometers I need exist or if
> >> > I need to build them, I need to resolve two questions and the
> >> > possible issues they bring up.
> >> >
> >> > 1) This may seem like a crazy question, but are there
> >> > low-friction potentiometers? (I'm referring to the physical
> >> > friction incorporated into the pot to retard motion).
> >> >
> >> > The reason I ask is because I guesstimate that in an extreme
> >> > case, I'd need a potentiometer's knob/slide to rotate/travel it's
> >> > full length 100 times in a single day. (Though in reality there
> >> > probably wouldn't be that many cycles in a month).
> >> >
> >> > This brings me to the second question.
> >> >
> >> > 2) Can a pot with a knob/slide that travels a distance of only
> >> > one inch be adequate to cover the extremes for image parameters
> >> > like Brightness, Contrast, Horizontal size, Horizontal position,
> >> > Vertical size, & Vertical position?
> >> >
> >> > To clarify my goal. I want to be able to quickly establish and
> >> > lock in all six settings via mechanical means.
> >> >
> >> > Springs will keep the knobs/slides at one side of their range,
> >> > and when I need the correct settings, a plunger will ensure
> >> > accurate re-positioning of the knobs/slides.
> >> >
> >> > Thanks.
> >> >
> >> > Darren Harris
> >> > Staten Island, New York.
> >> Hi Darren,
> >> What you are asking used to be commonly done on monitor and TV
> >> production lines, before the advent of digital circuits.
> >>
> >>
> >> --
> >> Best Regards:
> >> Baron.
> >
> > The idea is to do this mechanicaally and stay away from digital
> > circuits.
> >
> > I designed a switcher that would allow me to switch between a dozen
> > game PCBs. All of which will individually use the same monitor.
> >
> > But certain image parameters may vary from one game board to the
> > next and it would be too much of a pain to open up the cabinet and
> > manipulate controls on the chassis every time I needed to correct
> > the picture. I can just connect and make them part of the
> > mechanical switching action, which is initiated by a knob I push and
> > turn.
> >
> > If anyone has ideas on where to get sliding poteniometers I can use
> > for thuis project, I'd appreciated it.
> >
> > Thanks.
> >
> > Darren Harris
> > Staten Island, New York.
> Have you considered the motorised sliders as used on sound mixer
> decks ?
>
> --
> Best Regards:
> Baron.
No. I have no idea what that is, but if they are motorized they wouldn't work for me.
Darren Harris
Staten Island, New York.
Reply by Baron●November 21, 20212021-11-21
Searcher7 prodded the keyboard with:
> On Saturday, November 20, 2021 at 5:15:15 AM UTC-5, Baron wrote:
>> Searcher7 prodded the keyboard with:
>> > I'm working on a custom project that involves potentiometers and
>> > picture adjustments on the monitor they are connected to.
>> >
>> > To determine whether or not the potentiometers I need exist or if
>> > I need to build them, I need to resolve two questions and the
>> > possible issues they bring up.
>> >
>> > 1) This may seem like a crazy question, but are there
>> > low-friction potentiometers? (I'm referring to the physical
>> > friction incorporated into the pot to retard motion).
>> >
>> > The reason I ask is because I guesstimate that in an extreme
>> > case, I'd need a potentiometer's knob/slide to rotate/travel it's
>> > full length 100 times in a single day. (Though in reality there
>> > probably wouldn't be that many cycles in a month).
>> >
>> > This brings me to the second question.
>> >
>> > 2) Can a pot with a knob/slide that travels a distance of only
>> > one inch be adequate to cover the extremes for image parameters
>> > like Brightness, Contrast, Horizontal size, Horizontal position,
>> > Vertical size, & Vertical position?
>> >
>> > To clarify my goal. I want to be able to quickly establish and
>> > lock in all six settings via mechanical means.
>> >
>> > Springs will keep the knobs/slides at one side of their range,
>> > and when I need the correct settings, a plunger will ensure
>> > accurate re-positioning of the knobs/slides.
>> >
>> > Thanks.
>> >
>> > Darren Harris
>> > Staten Island, New York.
>> Hi Darren,
>> What you are asking used to be commonly done on monitor and TV
>> production lines, before the advent of digital circuits.
>>
>>
>> --
>> Best Regards:
>> Baron.
>
> The idea is to do this mechanicaally and stay away from digital
> circuits.
>
> I designed a switcher that would allow me to switch between a dozen
> game PCBs. All of which will individually use the same monitor.
>
> But certain image parameters may vary from one game board to the
> next and it would be too much of a pain to open up the cabinet and
> manipulate controls on the chassis every time I needed to correct
> the picture. I can just connect and make them part of the
> mechanical switching action, which is initiated by a knob I push and
> turn.
>
> If anyone has ideas on where to get sliding poteniometers I can use
> for thuis project, I'd appreciated it.
>
> Thanks.
>
> Darren Harris
> Staten Island, New York.
Have you considered the motorised sliders as used on sound mixer
decks ?
--
Best Regards:
Baron.
Reply by Searcher7●November 20, 20212021-11-20
On Saturday, November 20, 2021 at 5:15:15 AM UTC-5, Baron wrote:
> Searcher7 prodded the keyboard with:
> > I'm working on a custom project that involves potentiometers and=20
> > picture adjustments on the monitor they are connected to.=20
> >=20
> > To determine whether or not the potentiometers I need exist or if I=20
> > need to build them, I need to resolve two questions and the possible=20
> > issues they bring up.=20
> >=20
> > 1) This may seem like a crazy question, but are there low-friction=20
> > potentiometers? (I'm referring to the physical friction incorporated=20
> > into the pot to retard motion).=20
> >=20
> > The reason I ask is because I guesstimate that in an extreme case,=20
> > I'd need a potentiometer's knob/slide to rotate/travel it's full=20
> > length 100 times in a single day. (Though in reality there probably=20
> > wouldn't be that many cycles in a month).=20
> >=20
> > This brings me to the second question.=20
> >=20
> > 2) Can a pot with a knob/slide that travels a distance of only one=20
> > inch be adequate to cover the extremes for image parameters like=20
> > Brightness, Contrast, Horizontal size, Horizontal position, Vertical=20
> > size, & Vertical position?=20
> >=20
> > To clarify my goal. I want to be able to quickly establish and lock=20
> > in all six settings via mechanical means.=20
> >=20
> > Springs will keep the knobs/slides at one side of their range, and=20
> > when I need the correct settings, a plunger will ensure accurate=20
> > re-positioning of the knobs/slides.=20
> >=20
> > Thanks.=20
> >=20
> > Darren Harris=20
> > Staten Island, New York.
> Hi Darren,=20
> What you are asking used to be commonly done on monitor and TV=20
> production lines, before the advent of digital circuits.=20
>=20
>=20
> --=20
> Best Regards:=20
> Baron.
The idea is to do this mechanicaally and stay away from digital circuits.
I designed a switcher that would allow me to switch between a dozen game PC=
Bs. All of which will individually use the same monitor.
But certain image parameters may vary from one game board to the next and i=
t would be too much of a pain to open up the cabinet and manipulate control=
s on the chassis every time I needed to correct the picture. I can just co=
nnect and make them part of the mechanical switching action, which is initi=
ated by a knob I push and turn.
If anyone has ideas on where to get sliding poteniometers I can use for thu=
is project, I'd appreciated it.
Thanks.
Darren Harris
Staten Island, New York.
Reply by Baron●November 20, 20212021-11-20
Searcher7 prodded the keyboard with:
> I'm working on a custom project that involves potentiometers and
> picture adjustments on the monitor they are connected to.
>
> To determine whether or not the potentiometers I need exist or if I
> need to build them, I need to resolve two questions and the possible
> issues they bring up.
>
> 1) This may seem like a crazy question, but are there low-friction
> potentiometers? (I'm referring to the physical friction incorporated
> into the pot to retard motion).
>
> The reason I ask is because I guesstimate that in an extreme case,
> I'd need a potentiometer's knob/slide to rotate/travel it's full
> length 100 times in a single day. (Though in reality there probably
> wouldn't be that many cycles in a month).
>
> This brings me to the second question.
>
> 2) Can a pot with a knob/slide that travels a distance of only one
> inch be adequate to cover the extremes for image parameters like
> Brightness, Contrast, Horizontal size, Horizontal position, Vertical
> size, & Vertical position?
>
> To clarify my goal. I want to be able to quickly establish and lock
> in all six settings via mechanical means.
>
> Springs will keep the knobs/slides at one side of their range, and
> when I need the correct settings, a plunger will ensure accurate
> re-positioning of the knobs/slides.
>
> Thanks.
>
> Darren Harris
> Staten Island, New York.
Hi Darren,
What you are asking used to be commonly done on monitor and TV
production lines, before the advent of digital circuits.
--
Best Regards:
Baron.
Reply by Phil Allison●November 18, 20212021-11-18
Searcher7 wrote:
=============
>
> 1) This may seem like a crazy question, but are there low-friction potentiometers?
** Yes - the " plastic track " types.
Both slide and rotary kinds are very softy and silky in feel.
> 2) Can a pot with a knob/slide that travels a distance of only one inch be adequate to cover
> the extremes for image parameters like Brightness, Contrast, Horizontal size, Horizontal
> position, Vertical size, & Vertical position?
** Can be done.
Now stop being so fucking mysterious and pot some actual details.
...... Phil
Reply by Searcher7●November 18, 20212021-11-18
I'm working on a custom project that involves potentiometers and picture adjustments on the monitor they are connected to.
To determine whether or not the potentiometers I need exist or if I need to build them, I need to resolve two questions and the possible issues they bring up.
1) This may seem like a crazy question, but are there low-friction potentiometers? (I'm referring to the physical friction incorporated into the pot to retard motion).
The reason I ask is because I guesstimate that in an extreme case, I'd need a potentiometer's knob/slide to rotate/travel it's full length 100 times in a single day. (Though in reality there probably wouldn't be that many cycles in a month).
This brings me to the second question.
2) Can a pot with a knob/slide that travels a distance of only one inch be adequate to cover the extremes for image parameters like Brightness, Contrast, Horizontal size, Horizontal position, Vertical size, & Vertical position?
To clarify my goal. I want to be able to quickly establish and lock in all six settings via mechanical means.
Springs will keep the knobs/slides at one side of their range, and when I need the correct settings, a plunger will ensure accurate re-positioning of the knobs/slides.
Thanks.
Darren Harris
Staten Island, New York.