LCDInfo.com

Hey Guys

I'm new here and was wondering about this graphic LCD.
All i have is the info of the controller and the picture no datasheet available yet .
I was wondering if any of you recognise the LCD and would it be very hard to wire up?.

heres the info :-

192x64 pixel LCD display.

Specification as follows:

Picvue part PVG190602BYL

Type: STN LCD with LED backlight

Module dimensions: 120 x 62 mm

Display area: 100 x 37 mm

LED backlight - no bulky EL inverter or interference problems.

Dark blue on yellow-green display colour.

Integrated KS0108 driver, standard programming libraries are available.

and the pic

my mind is very milkly today (sorry just come back form a lan.

If its based on the ks0108 you will have 3 chip select
i'm not sure the lpt port can admin one more chip..
need to be confirm (if no, you will have to put some hardware beside)

_________________
Shadows move where light should be

As they are using the KS0108 controller they should be usable. Do you have datasheets for the display ? CS pins are the thing I'm wondering about as you need to be able to select 3 different chips compared to 2 different chips in 128x64 KS0108 displays. But after figuring out how this works it shouldn't be very difficult to adjust the LCDInfo KS0108 driver to support this display. And even with the current driver you could probably use two thirds of the display as 128x64 display.

k i'll probablly go ahead and purchase it.

connect up via parralel or serial?

shouldnt be to hard.

connecting it has a 128x64 is possible via parallel port
controlling graphics lcd via serial port is a bad idea! you would have a poor refresh rate!( 128x64=> 1024bytes/frame to obtain a 10fps you need a 10KB/s connection, not possible via rs232 and this is without command, start, stop bit...)
for a 192x64 lcd @25 fps, you need 37KB/s (something like 384000bps with 1start & one stop)

like you could see here:
http://www.beyondlogic.org/epp/epp.htm
the only pins available for output on the parallel port are 1,14,16,18 and from 2 to 9
you will need one more connection to control the chipselect3
so you will have to add a binary decoder

and Henri will have to add the mulu inside lcdinfo

instead of a binary decoder, you could put 2n2222
8x 2n2222
5 pull up resistances
=> 4 states command: none, chip 1,2,3 chip select active down

_________________
Shadows move where light should be

I have a feeling that the display might already have some logic built on the pcb and could have only two CS pins available to the outside world.
But nothing definitive can be said before seeing the datasheet.

So it might be that the hardware connection is same as for 128x64 display and the only change needed would be in the driver to add third CS pin state.
They could be for example:
CS1 HIGH & CS2 LOW = chip 1 selected
CS1 LOW & CS2 HIGH = chip 2 selected
CS1 HIGH & CS2 HIGH = chip 3 selected

thats could be true
and it would be fine

and when you think about it, it's more economical for them:
a 20pins connector, instead of a 21!
(do you know many 21 connectors???)

_________________
Shadows move where light should be

hi there

I`ve the same display here and yesterday i've connected it to parport. But something went wrong. the display stays black (yellow). I've checked the wiring often but can't find anything wrong

For CS i've used a 74LS42:

Code:

*        nLF (14)
*        |   INIT (16)
*    Vdd |   |   GND GND
*    |   |   |   |   |
*    16  15  14  13  12  11  10  09
*   --------------------------------
*  |                                |
*   >                               |
*  |                                |
*   --------------------------------
*    01  02  03  04  05  06  07  08
*    |   |   |   |               |
*    CS1 |   |   |               GND
*        CS2 |   CS4 (CS2 second LCD)
*            CS3 (CS1 second LCD)

I'll try to test without this IC on only 2 CS wires. Maybe it works.


N8Geier

Do you have a datasheet for the display ? I'd be interested in seeing it.