Multiple displays on the Pi

Hello,

I am looking for suggestions or pointers to connect multiple displays on the raspberry pi, running the arm linux, and displaying 2 independent screens (not mirror).

Preferable, one of the 2 screens is a touchscreen.

What I want to to is provide a sort of 2-display system, where an operator has the touch enabled screen,and the other person is just observing the second screen output.

I hope the community can help me get started...

The Pi on its own can only drive one screen - be it HDMI or composite.
There are USB screens, which may interface with the Pi.

A maybe better alternative would be two Pis networked together.
If you don't supply a mouse and keyboard for the second Pi, then that one can only be watched!

[mahjongg]

The raspberry PI foundation is working on an interface that would make it possible to add an LCD panel, and this panel will indeed be useable as a seconds screen, independent of the HDMI screen. The interface connector is located above the SD-Card slot, a second similar connector is for a planned camera module.

Hello,

Thanks for the replies.
So, the analog video and HDMI cannot be used simultaneously as 2 separate screens.

I believe there is already a connector on the type B board, to connect a LCD. But I cannot find any good starters about how and which hardware to connect. Is it also exclusive ? E.g. when connected, the hdmi or analog will not work anymore ?

Where can I follow the status ?

The other solution, to connect 2 pi's via network, is the last resort solution...

[mahjongg]

So, the analog video and HDMI cannot be used simultaneously as 2 separate screens.

No!

believe there is already a connector on the type B board, to connect a LCD. But I cannot find any good starters about how and which hardware to connect. Is it also exclusive ? E.g. when connected, the hdmi or analog will not work anymore ?

the DSI output will function as a second screen, and will be fully independent of the main screen.
At least AFAIK.

Where can I follow the status ?

It will be announced on the News page (front screen), it will be ready when its ready, my best guess will be early 2013, but you won't hear when its ready until it is ready.

The other solution, to connect 2 pi's via network, is the last resort solution...

That is one possibility, the other is to use the same screen twice. Connect the composite video output of the PI to two TV's, and mask a different part of each TV's screen. For example on one screen the top half, and on the other the bottom half.

You could use a USB video card, or a graphical LCD module attached to the GPIO. Performance will probably be pretty poor though...

Mmm, I have a USB display link adaptor. I might half to try this...

tried my usb displaylink adaptor, no go out of the box. reading on it reviled some driver stuff might have to be done to get it working... I will poke at it and see what I can get done...

Are you looking for a framefuffer type of display, or just a general purpose programmable LCD panel? If it's the latter, then this may help: https://projects.drogon.net/4d-systems- ... pberry-pi/

-gordon

Hello Gordon,

Think he is looking to do somting like a multi-display with the RasPi. There is a technoligy called displaylink that alows you to have a USB video card of sort. (this is a pice of hardware) from what I have found so far this might work, but drivers will need to be setup for it, and it's seems to be a bit of work that I have not started yet. hope to have some time this week to mess with it, I am using an EVGA UV-16 to test with.

ok, I found a link that shows how to get a display link device working. it will require a compile of the the raspbian kernel some drivers and configure a /etc/X11/xorg.conf file. anyways looks like it can be done. here is the link to what I found.

http://karuppuswamy.com/wordpress/2012/ ... -raspbian/

I dont have the resource to compile something like this at the moment.