http://cgi.ebay.com/SONY-PSP-Sharp-...QQihZ012QQcategoryZ127746QQrdZ1QQcmdZViewItem
p/n LQ043T3DX02
It has a resolution/format satisfactory for movies 480x272, very good viewing angles (160), good contrast (400) and mediocre response time (30+30ms), for its dot pitch. Only problem is it can't be directly interfaced with a PC. It has a 40 pin FCB with 0.5mm pitch, and takes parallel 8bit RGB signals, clocked at 9MHz.
Are such connectors and cables possible to get? Can the necessary signals be intercepted from the graphic adapter, before they feed the DAC to VGA-RGB, or are suitable ADC boards available?
For 35$ this is the most convenient option I've seen for a small size projector.
p/n LQ043T3DX02
It has a resolution/format satisfactory for movies 480x272, very good viewing angles (160), good contrast (400) and mediocre response time (30+30ms), for its dot pitch. Only problem is it can't be directly interfaced with a PC. It has a 40 pin FCB with 0.5mm pitch, and takes parallel 8bit RGB signals, clocked at 9MHz.
Are such connectors and cables possible to get? Can the necessary signals be intercepted from the graphic adapter, before they feed the DAC to VGA-RGB, or are suitable ADC boards available?
For 35$ this is the most convenient option I've seen for a small size projector.
That LCD screen is very tempting, but a controller for it isn't available unless you buy a PSP with a broken LCD and strip it for the controller. Even then, it doesn't have any video or audio inputs, so finding out how to input video would be a problem.
Unless you can find someone else who has already done it, it doesn't look like it would be worth it.
Tgreenwood
Unless you can find someone else who has already done it, it doesn't look like it would be worth it.
Tgreenwood
I'm almost sure the 24 bit RGB TTL signals are already present in a majority of graphics cards. For example I have a GeForce2 MX with an unsoldered RAMDAC, I believe the pins are fed with these signals.
Documentation is not easily available though. I know there are many electronics pros here, that's why I'm asking (Guy Grotke?)
I also found 4" full VGA panels, with 18bit RGB. At worst I can make them work in 8 colour mode by simply connecting the VGA output 😉 (provided I have those super small connectors, 0.5 and 0.3 mm dot pitch!)
If we solve this we open a whole world of small panels, because most of them use this interfacing, not LVDS. For cables I'd be happy with IDE ribbons.
Documentation is not easily available though. I know there are many electronics pros here, that's why I'm asking (Guy Grotke?)
I also found 4" full VGA panels, with 18bit RGB. At worst I can make them work in 8 colour mode by simply connecting the VGA output 😉 (provided I have those super small connectors, 0.5 and 0.3 mm dot pitch!)
If we solve this we open a whole world of small panels, because most of them use this interfacing, not LVDS. For cables I'd be happy with IDE ribbons.
It seems that external RAMDACs get the 24bit RGB data multiplexed on 12 bit lines for pin economy. This complicates things, as some buffering registers are needed to demultiplex it for LCDs. Actually the problem is the extreme finese of all the solders/traces, not to mention etching such a DIY board.
- Status
- Not open for further replies.