psp touchscreen

[sconer]

http://www.sparkfun.com/commerce/pro...oducts_id=8448
does anyone know if this will act as an analog, or would a plugin/homebrew need to have support for it?

[megaglow_z]

"This touch screen is not intended to be hacked into an off-the-shelf Play Station Portable. It is solely meant to be a nice add-on to our 24-Bit color display."

No.
Its not for the psp....its for the psp screen there selling to use in custom electronic applications.
However,someone might be able to hack this into a psp that knows what there doing and post a how to

[sconer]

Originally Posted by megaglow_z

"This touch screen is not intended to be hacked into an off-the-shelf Play Station Portable. It is solely meant to be a nice add-on to our 24-Bit color display."

No.
Its not for the psp....its for the psp screen there selling to use in custom electronic applications.
However,someone might be able to hack this into a psp that knows what there doing and post a how to

...but technically it is for the PSP. And from what I've looked into, I think it should be able to hook into a regular LCD screen. It's just a bit odd that they make it but don't say directly how it's used.

[waywardson]

hmm sounds like something id like to have if there is some use for it

[Torch]

It would need applications specially coded to use it. And how the heck would you connect it? Probably internally wire it to the serial port.

Or someone needs to make an abstration layer driver which reports this thing as the analog stick.

[Art]

Easy if you can live without your analogue stick.
Someone linked to this on ps2dev.org a while back.
It would work like a two axis analogue controller.
I think Raphael's Joysens program would just about take up the slack for any
difference in potentiometer values between this and the PSP analogue controller.

[sconer]

are you sure it's so simple? I read most of my information from here http://forums.ps2dev.org/viewtopic.p...a06679986e46da

one guy said he would try to make an analogue replacement but he said it outputs 10 bit coordinates, while the analogue outputs 8 bit. not to mention the psp would have to be cut and chiseled in some areas to make this fit; and a prx would have to be modified in order to make it function properly.

if i can find more evidence or work on this i may purchase a screen and try it out myself.

[Art]

I can't believe how lame some of the posts are in that thread.
Take a look at the picture of the touchscreen. It has no (zero) digital components. You can see straight through it.

How does a few pieces of film output coordinates, or any data at all.

The talk of serial controllers and MAX232 converters in that thread is plain silly.

Your PSP analogue controller doesn't output anything either.
It is just two variable resistors like any analogue controller that ever existed.
-= Double Post =-
And one guy in the PS2dev thread links to a document that explains pretty
much how it works.
It is connected to AVR microcontroller analogue inputs:
http://www.atmel.com/dyn/resources/p...ts/doc8091.pdf

The only problem I can see is if the value of each potentiometer is vastly different from that
of the analogue controller so that it can't be corrected without some fancy PSP software.

[Torch]

Originally Posted by Art

I can't believe how lame some of the posts are in that thread.
Take a look at the picture of the touchscreen. It has no (zero) digital components. You can see straight through it.

How does a few pieces of film output coordinates, or any data at all.

The talk of serial controllers and MAX232 converters in that thread is plain silly.

Do some research.

You can buy 22" screens like this which you stick on your monitor!! And you connect them via usb. They detect as a mouse, with custom drivers. When you touch the screen, the mouse "jumps" to that location and clicks. You can PWN with it in counter strike. Though it looks like a blatant aimbot to a spectator.

The material is sensitive to bending. When it bends, proportionate EMFs are induced in each of the edges. Those voltages are output through the serial connectors.

The plug n play types for monitors have external circuits that convert it to mouse coordinates. You have to set the resolution in the driver config. You can "crop" in the driver config to remove extra portions that dont cover the screen etc.

[Art]

I've done my research, try a little more reading about this specific module.
This thread is about this touchscreen and how to connect it to a PSP:
http://www.sparkfun.com/datasheets/L...-NCOFD52-R.pdf
This unit is a RESISTIVE touch screen which has no serial connector,
and does not produce voltage like the one described in the AVR project.

Those voltages are output through the serial connectors.

A serial connector is only present on the finished device with a microcontroller circuit,
not this bare module. Serial ports communicate with 0s and 1s, not fluctuating volatages.
There has to be a digital circuit to communicate with a serial or USB port.

Sure, you could use an external circuit to interface with the PSP serial
port, power it with a battery, and carry all of that around, but thankfully
(for whomever), the PSP analogue port provides what we need.

I also believe the voltaic module could be connected just as easy.
It still only requires two analogue ports.
Art.
-= Double Post =-
Well Sparkfun aren't going to give me any freebies.
I linked here and to my site, and told them I would get one working with
the PSP as an add on if they supply be with a small number of them.

They did confirm what I already knew though.

You are correct, all the touch screen is, is a
simple resistive bridge

Art.

[chux_chux]

touch screen would be cool

[xart]

Like Art pointed out it is going to require more than a touch screen, someone will have to make a dedicated PCB board with surface mount components to deal with the touch screen then link up to the PSP via serial.

then homebrew could be made to procces it, a plugin could be provided to make it behave as an analog port.

another thing you could do with analog is give the PSP a true Analog, as the PSP analog is not at all to me analog, may have a varable resister as analog controllers do but have you seen the readout you get, what is sony thinking, best you can get is a 2bit x and 2bit y

[Torch]

Originally Posted by xart

another thing you could do with analog is give the PSP a true Analog, as the PSP analog is not at all to me analog, may have a varable resister as analog controllers do but have you seen the readout you get, what is sony thinking, best you can get is a 2bit x and 2bit y

Who the heck came up with that. Its DEFINITELY a lot more than 2 bit. In fact. Why dont you try out the calibration page in Doom for PSP.

[kEnnY GpRS]

this seems like too much work for something that doesnt even work in real games

[BigSanFrey]

Originally Posted by kEnnY GpRS

this seems like too much work for something that doesnt even work in real games

it could work in real games as an analog stick plugin...

Like Art pointed out it is going to require more than a touch screen, someone will have to make a dedicated PCB board with surface mount components to deal with the touch screen then link up to the PSP via serial.

then homebrew could be made to procces it, a plugin could be provided to make it behave as an analog port.

[Torch]

Wait!! What about that DS Emulator!!!!!!! OMG OMG I cant believe no1 brought it up. Now that is called giving it to Nintendo up the ass. If they ever get the touchscreen working with it that is...

[sconer]

another proposal, would this be difficult to mod this into a usb plugin instead?

[NDWolfwood]

lol the PSPDS... that would be wierd.

[Jomann]

this would be great if it worked, has anyone bought one of these thingys yet :P

[sconer]

It's definetly possible, there are just no cases of anyone successfully installing it. You don't find many hardware modders that can modify prxs as well!

[Torch]

Originally Posted by sconer

It's definetly possible, there are just no cases of anyone successfully installing it. You don't find many hardware modders that can modify prxs as well!

Thats only if you want it to work globally.

Getting it to work only in your particular application is a relatively simple process. Just read inputs from serial port or whatever.