running mini-tft and mobo off same psu?

spacedog

spacedog

spacedog

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5 Apr 2003
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We're working on a litle project, got a nice little 17cm intel mobo picked out and a few other bits and bobs.
Now I was planning on using a pico psu with a 60w power brick running into the mains, then I realised I had more or less forgotten about the tft. We haven't picked one out yet, but it's going to be small, maybe 6 or 7 inches at most.
I could simply stick another power brick in there but seeing as this unit has an external controller device, this will mean the whole unit has 3 power bricks in all. Not ideal.

Has anyone ever run a mobo and a small tft off the same power brick? is it just as simple as putting in a splitter jack or are there other precautions required?

I reckon it would be feasible to run the two devices off the one 9v output but these scars tell me I've been wrong in the past
 
You would be better to find a motherboard with an LVDS output and inverter connector. That way you could run the board directly to the LCD panel digitally, and then all power would be drawn through the motherboard.
Much cleaner and less complicated, although the board may be slightly more money.
 
this?

Hi, I've been looking about and thinking of maybe going for this mobo as it has lvds
http://www.itx-warehouse.co.uk/Product.aspx?ProductID=200
also, it's got a few other features that would be very nice

however I've been having trouble finding any kind of straightforward info on lvds. Am I right in thinking that it would draw power from the vga port? no hang on, that doesn't make sense, maybe you plug the power cable into the board somewhere? Also does it have to be a specific sort of monitor?

any advice greatly appreciated
 
The main reason I suggested using LVDS is because you mentioned a small display (6-7"). Most small monitors look horrible.

In a normal monitor, you connect a VGA cable and 12V power cable. These are connected to a board in the monitor which converts the analogue signal into a digital signal which is sent along an LVDS cable into the LCD panel. This board also converts the 12V into 5V or 3.3V depending on the requirements of the panel, and sends this voltage down one of the LVDS cable wires to power the pixels.
The backlight is powered from the board as well, via an inverter (changes 12V to 1500V).

What I am suggesting is taking this A/D board out of the equation and let the motherboard do the convertions. The motherboard would also power the inverter.

If this is a home project, you may want to ignore me, or have a look at some forums that specialise in in-car computing because they will know a lot about what you want to achieve.
If this is a work thing, let me know because I know where to get stuff aimed at business/industrial.
 
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