Possible to attach cheap screen module to Raspberry Pi?


8 posts
by RobinJ » Mon May 07, 2012 7:21 pm
There are a few of those cheap screen module replacements for a number of devices for sale on the internet (mostly Nintendo DS). Would it be possible to attach one of those to the Raspberry Pi, so you could have a small eReader of some kinds? If yes, how? Please keep in mind that I'm more of a software guy, so please keep mechanical stuff simple :p

http://dx.com/genuine-second-h.....33?item=75
http://dx.com/tft-lcd-replacem.....75?item=66
http://dx.com/genuine-nintendo.....04?item=67
http://dx.com/genuine-zte-v880.....ule-110106
http://dx.com/repair-parts-rep.....1000-18438
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by mahjongg » Mon May 07, 2012 9:42 pm
In short, no it wouldn't be possible.

Not without a lot of extra cost to create a HDMI or DVI-D input for these panels.

Such circuit boards do exist (suitable for some LCD panels, but probably not for the ones listed here) but are not cheap, or easy to use.

There is however another solution.

The R-PI does have a connector specifically to connect an LCD panel to, (the DSI connector)  but the specific panel that will be compatible with the DSI connector has not been selected/found yet, and if (a suitable LCD connector that is cheap and available in quantity) is selected/found it still needs a specific interface "cable" (not really a cable, but lets pretend it is for the moment), and when the physical connection is then ready it still won't work because specifically for exactly that type of LCD (and no other) a GPU driver must be written, and only Broadcom engineers can do that. After that a specific LCD panel will be available, and support for it will become available, but only that and no other LCD panel will work.

After that has happened we can see if the community can find out if other comparable LCD panels will happen to work, but even if they do there is still the problem of the custom "cable" that is needed, as every panel has its own special connector, no standardization there.

So you see, its not as simple as you might have thought, and unfortunately it means that there isn't a simple way to use the LCD panels you described.
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by hzrnbgy » Thu May 10, 2012 8:33 pm
I'm serial-enabling this for some cheap terminal-based screen. Granted it won't be able to render fancy/accelerated graphics, it should be more than enough to display some data (readings from temp sensor, ip addresses, kernel debug message, etc).

http://instagr.am/p/KdZvhTxri8.....rce=action

But i'm thinking more of a specialized use case scenario

GPS data

digital clock

twitter feeds

etc

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by simplyfred » Thu May 10, 2012 11:27 pm
I've just turned an old 12.1" laptop screen into a screen for a car PC i'm building, and replacing two 19" monitor LCD controllers as both had packed up working.

The small Dell Lattutude was just too slow and would have thrown it away, but now its a great little touch screen monitor with a DVI connector and the other monitors have DVI and HDMI connectors now.

I got everything i needed on Ebay from NJYtouch including all cables and they programmed the controller to suit the LCD display panel.

Good prices too and good range of boards.

Well worth a look guys.
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by hzrnbgy » Fri May 11, 2012 2:44 pm
anyone ready for matrix-themed RPi terminal?

http://instagr.am/p/KfXQb8Rrr_/
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by transmition » Tue May 15, 2012 2:53 am
hzrnbgy wrote:anyone ready for matrix-themed RPi terminal?

http://instagr.am/p/KfXQb8Rrr_/


How were you able to do this? I'm planning on making sort of a portable terminal for myself, and this looks perfect.
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by hzrnbgy » Tue May 15, 2012 5:29 am
Just some 8 bit micro and a cheap LCD module off ebay. I'm almost done making a crude terminal output for the Pi. It will take the serial output from the UART and format it to fit the 26 chars x 26 lines display. Not very pretty for long boot messages but more than enough to display useful data
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by Nigel Berrie » Tue May 15, 2012 3:09 pm
Another way to go on this would of course be to use the Arduino Bridge "Ponte", and use an off-the-shelf available Arduino display.... And it sounds like the Ponte will be available soon. I think it should be possible to programme the Arduino display shield using the available serial interfaces through the Ponte...
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