The definitive 3.5" Lcd review

[gamemasterful]

I bought number three.

thewise1 might find this of interest. I was messing around with my screen trying to test things, see how it hooked up to my console, then I started to have a grounding problem. For half a second between blips I saw a menu for brightness, contrast, etc. Perhaps you could try to recreate what I did, or maybe try adding buttons to those empty ports, I dunno, but I thought it was interesting.

[eagle5953]

*moved to reference*

Surprised it wasn't there already.

[thewise1]

I bought number three.

thewise1 might find this of interest. I was messing around with my screen trying to test things, see how it hooked up to my console, then I started to have a grounding problem. For half a second between blips I saw a menu for brightness, contrast, etc. Perhaps you could try to recreate what I did, or maybe try adding buttons to those empty ports, I dunno, but I thought it was interesting.

I wonder if there's a debug menu on the screen, doubtful but still. I'd like it if I didn't need an amplifier circuit on te 64 boy.

[ABCinc]

I love the feeling you get from buying your first screen.

[nachoz12341]

#3 i just got it for snesp

[wallydawg]

I just recieved Screen #2 from business-sun, and the board looks different from the #2 pictured in this thread.





Picture 3 came out pretty blurry (the other pics are already bad enough as it is lol) so I will retake that one and hopefully add a pinout.

[hailrazer]

I just recieved Screen #2 from business-sun, and the board looks different from the #2 pictured in this thread.
Picture 3 came out pretty blurry (the other pics are already bad enough as it is lol) so I will retake that one and hopefully add a pinout.

Yea everyone I have bought from them has had a different board. Weird

[samjc3]

I just recieved Screen #2 from business-sun, and the board looks different from the #2 pictured in this thread.
Picture 3 came out pretty blurry (the other pics are already bad enough as it is lol) so I will retake that one and hopefully add a pinout.

Yea everyone I have bought from them has had a different board. Weird

all 5 (yes, i said 5) of mine have the same board,so i dunno. perhaps thats a newer board revision?

[ABCinc]

#3 looks different. Here are some pics.


in the top right corner it reads, DC out, 5V in, Ground, Video in.

[hailrazer]

i have just got number 3 and it has got 3 tack switchs on it for the brightness, contrast,saturation,hue,language,and reset.

That's not number 3 then LOL. That is a 3.5" screen that sort of looks like number 3

[hailrazer]

its the same case and stand.

Yes but if it has buttons for contrast and other stuff then it's not the same.

But it really probably doesn't matter.

[nachoz12341]

i got number 3 and wanted to know if it could run off 9v without frying

[limpport]

I just made a cool discovery on screen 2! You can adjust the brightness right on the board! On the backside of the board, there are some empty places labeled POWER, AV, MUNE, DOWN, NEXT, GND, IR, and 3V3. I found if you put a tact switch between the NEXT and GND, the brightness changes on every click! There are 6 levels of brightness total, but level 1 and 2 are probably too dark for any sort of use.



I've been testing out and trying other pin connections, but I can't seem to get anything to work. If someone has one of the 3.5" screens that has buttons in it, can you post some pictures of the boards? They might have the same sort of thing going on in them.

I also just noticed that the motherboards of screen 2 and 3 (that hailrazer posted) are exactly the same.

[devileyebrows42]

how do you hook up speakers to screen #2?

[limpport]

how do you hook up speakers to screen #2?

You can't. There is no audio amplifier on the screen. You'll have to build your own. Rekarp has an audio amplifier for mono audio on his website (http://www.longhornengineer.com/DIY/Audiomono" onclick="window.open(this.href);return false;). You can also build a really nice stereo amplifier with a TPA6021A4 chip from Texas Instruments (http://focus.ti.com/lit/ds/symlink/tpa6021a4.pdf" onclick="window.open(this.href);return false;). Hailrazer also found a great set of speaker/amplifiers that work great as well (http://forums.benheck.com/viewtopic.php?f=8&t=35308" onclick="window.open(this.href);return false;).

There are plenty of options!