Power 7 inch tft trough motherboard?

**Danneman** · 04-10-2004, 07:43 PM

Hi, first post on this what seems to be excellent forum.

Ok, enough butt-kissing, and on with my question:

Is it possible to power the 7 inch Xenarc trough the motherboard (in my case, a mini-itx).
Im no electrical engineer or anything (the title of this forum pretty much describes me), but since the the screen runs on 12 V and the mother board can deliver 12 V, wouldnt it just be a matter of hooking up a cable between the two?
Maby there are cables for this available?

Anyway, what I want to accomplish is to have only one power-input (to the motherboard), and supplying all the peripherals with this.
Possible?

Thanks

**samc** · 04-10-2004, 07:56 PM

Just tap to the molex connectors. If you don't know what I mean by that then goto a computer shop and ask them to hook you up.

**Danneman** · 04-10-2004, 08:52 PM

Thanks. Yes, I know what you mean in a general sense, but Im not sure exactly how to do it.
And since my goal is to complete this project a little less ignorant about electronics, I want to do it myself.
So can you/anybody be more specific? Perhaps a link to a guide/tutorial (someone must have done this in the past, right? Im just not finding it trough googling..)?

Thanks

**jusatry** · 04-10-2004, 10:28 PM

Originally Posted by Danneman

Thanks. Yes, I know what you mean in a general sense, but Im not sure exactly how to do it.
And since my goal is to complete this project a little less ignorant about electronics, I want to do it myself.
So can you/anybody be more specific? Perhaps a link to a guide/tutorial (someone must have done this in the past, right? Im just not finding it trough googling..)?

Thanks

go to radioshack and get the plug that fits your screen (most likley it is tip posotive but you can tell by reading the power brick that came with it - if the plus goes inside the ciricle it is tip posotive). Maybe bring the screen to test the sizes....since they dont really know **** there.

Then cut/tap (radio shack wire taps, while you are there....) the yellow wire (12V or +) and the black wire (ground or -).

Make sure your polarity is right and away you go!

Hope that helps.

**samc** · 04-10-2004, 10:45 PM

yup, do what the guy above me wrote but doesn't the Xenarc come with an adapter? If so just cut the transformer part of that and wire it. Quadruple check your polarity!!!!!!!!!!!!!!

**Danneman** · 04-11-2004, 07:55 AM

Thanks a lot guys

Seems pretty straight-forward, but I guess there is plenty of room for errors (polarity, etc). Ill be sure to uppload some images here of how Im going about it. Wouldnt wanna spoil an expensive screen like that.

Btw, Im going for a lilliput-screen instead of Xenarc. They just seem like a better deal (less glare, better color, cheaper) - but maby Im misinterpreting the facts.

**bertybassett** · 04-11-2004, 08:00 AM

remember if you get the polarity wrong it's bye bye to your screen.

**masch** · 04-11-2004, 09:43 AM

Why is it bye bye if you reverse the polarity? These screens got no protection in them? Arent there diodes to limit current in the opposite direction?

**TommieG** · 04-11-2004, 09:46 AM

Originally Posted by Danneman

Btw, Im going for a lilliput-screen instead of Xenarc. They just seem like a better deal (less glare, better color, cheaper) - but maby Im misinterpreting the facts.

Make a search for xenarc and liliput here on the board. I remember seeing a few threads discussing pros and cons.

Tom

here is one:
LILIPUT vs. Xenarc