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Connecting a Pixel Qi to a

A project log for Pi Chart

A wireless nautical chart plotter based on a Raspberry Pi and a sunlight readable screen.

Erland LewinErland Lewin 10/01/2016 at 08:283 Comments

dave manganelli asked about connecting the Pixel Qi display to a MT561-B VGA to LVDS board.

Here are some photos of my connection. I believe I got the cable from the Qi with the kit of display & earlier HDMI to LVDS board that I used - I don't know how one would go about making or buying the cable.
Here's the cable inserted into the connector on the back of the display. The connector pulls out straight (parallell to the display) out of the connector.

Here's a picture of the display-end of the connector. The data sheet of the Qi display which you can find online will have the spacing between the pins etc:

Here's the connection of the cable to the LVDS board:

Here you can see the configuration jumpers on the top of the board:

Another view of the top of the board and the headers:

The top of the LVDS board. Sorry it's fuzzy:

The bottom of the board:

Here's the wiring itself. There are four twisted pairs blue/white, 5 red wires, 6 black and two white wires at a quick count:

This was all done in a bit of a rush, I hope it's helpful!

Discussions

ksemedical wrote 02/01/2017 at 08:16 point

Hi Dave, and thanks.

Quick question on this MT561 board. Any suggestion on where I should bring in power (I am assuming 5V to the board (looks like to connector for power in, I don't mind soldering it, and of course will use something appropriate and regulated.

I also have a more complete package board HDVX9-AS (which has HDMI and other video output options (also this one is 'firmware 'upgreadable', but that has also proven to be difficult so far.

My real question is trying to learn how/why to address interfacing LVDS (from a Ras PI, PCduino etc etc. to 2nd hand monitors (trying to set up to do it for several machines, so I am trying to learn the key modules (for example can separate out the backlight power driving and deal with that separately as needed monitor by monitor when required. 

This issue is bouncing around alot (some discussions in some other hackaday users, just wondering if you had some off the top of your head ideas (at least for the first question re- power in to the little MT561-B board 

Thanks 


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ksemedical wrote 02/01/2017 at 08:18 point

Oops, sorry Dave, I was trying to respond to Erland.

But we got similar questions, I just replied to the wrong person, but welcome your input as you can see, dealing with same problem ;) 

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dave manginelli wrote 10/01/2016 at 19:30 point

Wow! I'm truly moved by your speedy and detailed response to someone you've never even spoken to before. Your information is extremely helpful and valuable. 

Thank you very much!

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