Raspberry Pi Portable Display.

He used a cheap backup camera display.  He used the composite output (yellow) from the Pi and hooked it to the yellow on the display.  He also powered the display if I remember from an external power source because for some reason we could never get the display to work off of 5V when bypassing the switching circuit.  He might have used the output from the switcher to power the Pi, don't quite remember, the only issue is you might overload that IC if you are running wireless stuff, otherwise the Pi doesn't draw that much.

I was also having problems myself. Am I right to assume he removed the jack/plug from the Pi, and just wired the screen's video data wires direct to the Pi's video output pin where the jack/plug had been? He holds up the board for just a second, to show its new lower profile, and it looks like almost all but the HDMI port has been removed.

[EDIT] Also, with the new B+ board, I imagine the pins/holes will still exist to solder to, eventhough the new composite out is a single interface/plug?

Thanks guys for your feed back.

What I can tell from the video is that he has the 3 wires from the display going to a 3 prong plug. He then has it plugged in somewhere in the middle left of the pi. cant quiet tell where though.

It was a car back up camera attached directly to the board via the place where the yellow jack used to be. I would use a multimeter to test which pins on the pi connect to which pins a the end of the cable at the monitor, resolder the jcak and attach the points back together, if possible using shielded wiring to minimise interference. Tat connected was wired to the place where the yellow jack was in order to allow him to disconnect the screen if required. The HDMI port is just there for an external monitor. This should also work for a b+

Once you get a backup screen, don't hack it. All you have to do is attach yhe yellow wire to the yellow jack on the RPi using a male to male RCA cable. Then you should atach the barrel connecter to a power source. Remember, the outer par is ground and inner/centre pin is positine. The white can be left alone. Then, You would eb better off hacking it.

If he is going to make a portable then hacking the screen is essential to reduce the size. For desktop use a full monitor is better.

First test to work, then hack!

Please read last part

Sorry, my bad. Yes please test, then hack. I should have read it more thoroughly. Also, positive not positine.