kattle87
Posts: 34
Joined: Mon Oct 10, 2011 7:50 am

Re: Driving a small LCD monitor

Mon Oct 10, 2011 11:57 pm

Ok I have zero experience in hardware, and I'm asking this since this question has gone through my head really, really bad.
Do you think it might be possible to control a small LCD directly, without having to go throught the s-video or HDMI port?
I am asking since after seeing this: blog.2yb.org/2010/07/cd-case-wearable-computer.html I am thinking more and more about doing the same with the Raspy. Instead of having to gather an out-of-production myvu or equivalent product, disassemble it etc, do you think one could go with direct LCD control somehow?
I am referring to LCDs similan to this: http://www.alibaba.com/product....._inch.html
Something tells me the answer will be "NO WAY" :D

Thunder__X
Posts: 43
Joined: Tue Sep 20, 2011 2:17 pm

Re: Driving a small LCD monitor

Tue Oct 11, 2011 12:05 am

You would need and lcd with a controller board that has pinouts or actual ports for it to work. A disassembled portable dvd player, Ps1 screen, or even http://www.ebay.com/itm/3-5-TF.....3f084dc756 would be perfect for this sort of application.

kattle87
Posts: 34
Joined: Mon Oct 10, 2011 7:50 am

Re: Driving a small LCD monitor

Tue Oct 11, 2011 12:14 am

ok, and when you say "controller board that has pinouts", what do you mean exactly? Somewhere around I saw things like "2-Wire Serial Communication Interface", with a "Video Signal interface: ITU-R BT. 601/656" listed as specifics for an LCD with (probably) integrated controller board. Does those things mean anything? All the things you listed were already discussed in other threads btw, I was looking for something "different" from Raspy -> composite -> digital again.

Thunder__X
Posts: 43
Joined: Tue Sep 20, 2011 2:17 pm

Re: Driving a small LCD monitor

Tue Oct 11, 2011 2:10 am

By controller board, I mean, a board that does the scaling for the lcd. basically, (and I'm pretty noob when it comes to hardware) a board that takes the input, whether it be, vga, composite, hdmi, etc, and scales the image so it fits the lcd.There is probably more to it, but I don't know too much of the logistics of it.

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glenn66
Posts: 55
Joined: Fri Nov 25, 2011 4:06 pm
Location: Belfast
Contact: Website

Re: Driving a small LCD monitor

Mon Nov 28, 2011 10:44 pm

http://rgwni.blogspot.com/2011.....nough.html

Not sure if this helps, but I've bought several 6 and 7 inch car LCD screens on eBay for tiny $$$ where the DVD part has failed and the 2 screens still work. The one in the blog was easy to interface to, just 4 wires, 2 for power (9-12volt) and a video signal, which the RPI will happily provide.

nullstring
Posts: 178
Joined: Sun Oct 02, 2011 3:05 pm

Re: Driving a small LCD monitor

Mon Nov 28, 2011 10:48 pm

http://elinux.org/RaspberryPiB.....LCD_Panels

I am hoping to use a random cell phone LVDS panel after someone else figures out how to convert from HDMI to it. I can only assume we'll have some demand.

obarthelemy
Posts: 1399
Joined: Tue Aug 09, 2011 10:53 pm

Re: Driving a small LCD monitor

Mon Nov 28, 2011 10:51 pm

This is being discussed in other threads, such as http://www.raspberrypi.org/for.....#038;t=176
Closing zombie topic to avoid duplication.

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