PSP Screen As VGA Monitor

HPI

HPI

HPI

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Joined
10 Mar 2008
Posts
6
Hello Guys,

I have a spare PSP LCD Screen next to me, Im thinking of using it as an externel monitor for viewing Ventrilo and Temps During gaming.

Heres the connections on the LCD:

psp_lcd_032.JPG


Theres a guy who has done this mod on his PSP LCD, Although the guy is much more intelligent than me and i would like some guys to help me.

Heres the Connections.

LCD-ribbon.jpg

Link:http://www.lan.st/showthread.php?t=1103&page=3

How would i connect the VGA cable to them small little pins for the LCD?

Im stuck! :cool:

Any Help would be Magic

Thanks

Jay
 
The diagram seems pretty self explanatory to me, can you be more specific about what part you need help with?
 
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You will need something reasonably powerful to drive this screen. Minimum ARM7, with quite a bit RAM too (270KB or so). Idealy you'd use a CPLD or an FPGA, and some external SRAM.

You could use an external board with a LCD driver, like the Atmel NGW100 -- but you still would have to know about electronics to a fairly high degree anyway to make the adapter board.

In other words, you can't drive it with a VGA cable. No way. Forget about that one..
 
BusError said:
You will need something reasonably powerful to drive this screen. Minimum ARM7, with quite a bit RAM too (270KB or so). Idealy you'd use a CPLD or an FPGA, and some external SRAM.

You could use an external board with a LCD driver, like the Atmel NGW100 -- but you still would have to know about electronics to a fairly high degree anyway to make the adapter board.

In other words, you can't drive it with a VGA cable. No way. Forget about that one..
Click to expand...

Yep I think this diagram explains how to get VGA out of the PSP as well as driving the LCD.
 
BusError said:
You will need something reasonably powerful to drive this screen. Minimum ARM7, with quite a bit RAM too (270KB or so). Idealy you'd use a CPLD or an FPGA, and some external SRAM.

You could use an external board with a LCD driver, like the Atmel NGW100 -- but you still would have to know about electronics to a fairly high degree anyway to make the adapter board.

In other words, you can't drive it with a VGA cable. No way. Forget about that one..
Click to expand...

I'm FAR from knowledgable about this area but why does a screen need CPU power etc to drive it? Surely you send a signal and power to it and thats it? Or is it just a screen without any logic attached to it whatsoever?
 
"This module is a color active matrix LCD module incorporating amorphous silicon TFT(Thin Film Transistor)
It is composed of a color TFT-LCD panel, driver ICs, Input FPC and a back light unit. Graphics and texts
can be displayed on a 480 x 3 x 272 dots panel with about 16million colors by supplying 24bit data signals
(8bit x RGB), Four timing signals, logic (typ. +2.5V), analog (typ. +5V) supply voltages for TFT-LCD panel
driving and supply voltage for back light."

http://document.sharpsma.com/files/L..._SP_122805.pdf

As far as I can tell the mod in that thread is designed to output from the psp to a pc monitor, it is not designed to output from a pc to the psp lcd.
 
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Actually my current 'pet' electronic project uses the PSP screen in question, so I'm quite familiar with it's internal and datasheet.

The screen has no controller (no onboard memory etc), you need to drive it digitally and 'feed' it 24 bits pixels on a rather strict clock (9-10Mhz).

So you need 'something' that has 24 digital pins out+control lines, 2 power supplies, possibly some circuitry to modulate the LED backlight (mosfet) and a CPU that can drive all of these at that frequency, and implement the dot clock, hsync and vsync signal timing.

It's not in the 'lets hack a VGA cable' spectrum :-)
 
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