Questions you'd like answering, regardless of how trivial they may seem

[Alex321]

Why do touchscreens on phones and tablets never need calibrating?

I work with machinery that all use a HMI with a touchscreen, every now and again the screen needs a calibration, so why is it that phone screens never go out, and if they don't why not make the industrial HMIs to the same design?

I don't know what your particular HMIs are, but possibly because the pone screen is not going to need the same precision as your HMI screens.

But if yours is just a bunch of icons that you press, with no particular precision needed, then I don't see why they would need calibrating.

 

[stephec]

I don't know what your particular HMIs are, but possibly because the pone screen is not going to need the same precision as your HMI screens.

But if yours is just a bunch of icons that you press, with no particular precision needed, then I don't see why they would need calibrating.

They vary from 12" to15", depending on the exact model, both display the same information which is icons and an on screen keyboard that takes up around a third of the screen when in use, they don't often need recalibrating, but when they do it's because the touch is out by at least an inch.

I'd imagine my phone screen is quite precise, I use it for playing minesweeper, and a snooker game where the balls are only 4mm in diameter.

 

[Alex321]

They vary from 12" to15", depending on the exact model, both display the same information which is icons and an on screen keyboard that takes up around a third of the screen when in use, they don't often need recalibrating, but when they do it's because the touch is out by at least an inch.

That is crazy. It must use a different technology. I wonder if they aren't actually touch screens as such, but use something like my old nook e-reader does, hich is beams running across the surface of the screen, that register when they are interrupted.

I'd imagine my phone screen is quite precise, I use it for playing minesweeper, and a snooker game where the balls are only 4mm in diameter.

Ye, iit doesn't sound like that is the issue, from what you say.

 

[stephec]

That is crazy. It must use a different technology. I wonder if they aren't actually touch screens as such, but use something like my old nook e-reader does, hich is beams running across the surface of the screen, that register when they are interrupted.

There's two different types that I know of, resistive and capacitive, not sure what the differences are though.

 

[Jameshow]

Why was there a guy wearing nothing but a pair of underpants running alongside the A167 near Durham this morning?

Probably our @Accy?!

 

[Poacher]

Probably our @Accy?!

Rather reclusive member who's only made one post in 16 years!

 

[Jameshow]

Rather reclusive member who's only made one post in 16 years!

Sorry

@Accycyclist 👍