Re: [lcd4linux] Can i use the Image widget with Serdisplib?

[Gilles v. d. H. <gil...@gm...>]

Hey Till,

About the contrast, that is also what i thought. Maybe i can use other
transistors to control the brightness in another way. ;)

Anyway, the thing i want to use lcd4linux for is an aquarium computer.
Basicly it is a linux box without monitor, and i want to "display" graphs,
clocks etc. the basic GLCD stuff on it. I want a script to constantly
generate "png" files, since that is what i've learnt from the TRAC pages,
unless you have a better idea. I am open for suggestions and willing to test
off course. I don't have the KS0108 GLCD yet, but i was thinking about
buying
a) 192x64
b) 128x64
and driving them using a parralel port.

So my new questions are:
- can both versions be controlled with the future version
- does the new driver also support parralel port or is that to slow for what
you want?
- is PNG images still the way to go or is there another way?

Btw, A refresh rate of >20hz means +/-20fps?

Thanx
Gilles

On 10/24/07, Till Harbaum / Lists <li...@ha...> wrote:
>
> Hi,
>
> i just finished the first prototypes for my glcd2usb, the graphic
> version of the lcd2usb. And the first display type to be supported
> by glcd2usb is the ks0108 family. And with that the image widget
> is working fine and i get a screen refresh rate of >20Hz, sufficient
> for fluid animations ...
>
> I'll soon publish all the necessary parts. But the contrast is not
> software
> controllable. It would be quite complicated to make this part software
> configurable for the ks0108 as this requires to handle a negative voltage
> generated by the ks0108 internally. This is justr not worth the effort as
> most people will never change the contrast, anyway.
>
> Till
>
> Am Mittwoch 24 Oktober 2007 schrieb Gilles van den Hoven:
> > Hello,
> >
> > I am looking to buy an LCD which has the KS0108 controller. This is a
> > Graphic LCD display 128x64.
> > This display has to be controlled by LCD4Linux with the Serdisplib (that
> > supports the KS0108 controller). - Is it then still possible to use the
> > image widget?
> >
> > Is it also possible (after the LCD program has started) to change the
> > contrast programmaticly?
> >
> > Thanx
> > Gilles
>
>
>