Power 12.1inch screen


#1

Hi:

I hope somebody can help me. First, sorry for my english.

I purchased the Picade BYO without the screen. Everything is fine.
I have this screen:

HDMI VGA 2AV Reversing LCD Driver Board for 12.1inch LTN121X1 1024x768 LCD panelHDMI VGA 2AV Reversing LCD Driver Board for 12.1inch LTN121X1 1024x768 LCD panel.

I have this Usb power:

And I have this cable:

When I connect the screen with the cable to the usb power the screen is working but after 4 o 5 minutes the screen start to turn off and on, off and on like a loop.

If I touch the cable is almos burning.

Do you know any way to connect the screen with another method? Or make this one works.

I do not trust that cable, because like I said after 3 or 4 minutes it is like too hot almost burning.

I do not understand about electricity, that’s the reason if somebody can help me with an easy solution.

Thanks very much.


#2

Hi

Get a 12v DC power supply would by my advice something like this.
http://www.ebay.co.uk/itm/12V-2A-AC-DC-Adapter-Charger-Power-Supply-for-CCTV-DVR-Camera-LED-light-UK-Plug-/390519993665?hash=item5aecce3541:g:CnAAAOSw0HVWDDuq

The cable you have is only rated at 0.8A and the screen requires more current hence why it is getting hot.

Cheers

Paul


#3

~Thanks for you reply.

The problem is that I do not want have two cables to power the pi and another for the screen.
I would like just one charger for both the screen and the raspberry. That’s the reason why I bought the usb 5 port, to connect the raspberry and the screen, and that usb 5 port have it own power supply.

This is the reason why I’m looking for something that have just one cable, and can power the raspberry and the screen.

Thanks


#4

this very discussion can be found 3 topics before yours:

http://forums.pimoroni.com/t/how-to-picade-12-screen-hat-single-power-source-on-off-buttons/3922/

the part recommended there is rated for 3A. At the very least it’s a saner start.


#5

Thanks for your help, but this is too complicate for me. I do not understand about electronics.

There is not another more simple method?

Thanks


#6

You can use a power extension inside the Picade like jopamo did. I used mine this way for some time and you only have to connect the power cord and everything boots up.


#7

Finally I went for this:

and this:

I hope it works