is a 1.8" screen too small?

[Electric Rain]

I would go with a 2.5" model... but, if you're really concerned about size, I have a different LCD in mind for you. I would use this one. It's ~$25 more expensive, but it draws far less current, it's much smaller, and it's naked. I consider this to be a good thing, since I wouldn't use the original casing anyway. I would re-build the control board to suit my needs too. The only controls you would need to keep on that board are the pots for brightness, color and contrast. Everything else can be directly wired. Therefore, you could ditch the entire control board, and wire directly to the areas on the screen's driver board that the ribbon cable hooks up to. Since it only draws 90mA, you could just get a simple step-up regulator to give it the 12V it needs from the 7.4V Li-ions you should use. (Does it seem too much like I'm trying to take over your project? ) Here's a comparison between the Lilliput screen and the AEI screen.

Code: Select all

                                   AEI         LIL

Width:                            2.50"       3.35"
Height:                           2.00"       2.45"
Depth:                            0.45"       0.95"
Price:                            $85         $60
Horizontal Resolution:            480         480
Vertical Resolution:              234         234
Voltage:                          12V         8V
Current:                          90mA        ~500mA

Oh, and standard definition TVs have a resolution of 640X480, but the NES actually has an output resolution of 256x224, so it technically gets distorted on TVs as well. Those LCDs have a higher resolution (both ways) than the NES, so text and such should be clear enough.

[hartleyshc]

Thanks for the suggestion. Ive looked over AEI's site before, but I guess I missed this model. One screen I was looking at there retailed for iirc $105.
$80, I can handle for the screen. I'm waiting till next pay check anyways to purchase the screen. I would rather spend my money on a screen that I know is better quality *at least I assume they are, by the amount of people Ive seen here use them, or suggest them.*

Only thing Ive noticed with the AEI board, is that I would also have to create/find a separate sound board and speaker(s).

[Electric Rain]

Yeah, for what it's worth, it's pretty much the exact same screen Ben used in his Phoenixes, just an inch smaller.

As for the audio amp... I would just build one myself. They're simple enough, you know?

[Edutainment]

I just kinda skimmed this topic, and at the beginning you said you thought NTSC tv was 320x240. I think its actually a lot closer to 640x480 or something. 648x486 possibly.

It's 720x480, but as long as the screen is the same dimensions it doesn't matter. 1.8" screen on a portable would actually be pretty cool

[Triton]

The NTSC format consists of 29.97 interlaced frames of video per second. Each frame consists of 484 lines out of a total of 525 (the rest are used for sync, vertical retrace, and other data such as captioning).

In ATSC, SDTV can be broadcast in 704 pixels × 480 lines with 16:9 aspect ratio (40:33 rectangular pixel), 704 pixels × 480 lines with 4:3 aspect ratio (10:11 rectangular pixel) or 640 pixels × 480 lines with 4:3 ratio (and square pixels). The refresh rate can be any of 24, 30 or 60 pictures per second.

[Electric Rain]

Thanks Triton. I didn't want to argue with the guy.