Cheap, easy to connect to a raspberry pi

I was able to power the screen with a transformer of recycling craft 9V, no worries. Warning, the screen turns on only if it receives a video signal, thus to test, it must be connected to rpi (yellow composite connector).
Loan, the image is slightly runny, but should not expect more with composite connection. A 1m distance, you can not see the fault.
The resolution of 480x272 pixels already displays a lot of things.
In short, cheap, you can play with his rpi and use such conky to display its full rpi useful information (IP address ...)