The definitive 3.5" Lcd review

Moderator:Moderators

Kyo
Senior Member
Posts:2470
Joined:Tue Jan 02, 2007 11:59 am
Location:Germany
Contact:
Re: The definitive 3.5" Lcd review

Post by Kyo » Mon Jan 11, 2010 2:06 pm

oh right, I forgot about amperage, you should just run it straight off the battery then, if it's not >12V
Last edited by Kyo on Mon Jan 11, 2010 4:22 pm, edited 1 time in total.

User avatar
thewise1
Portablizer Extraordinaire
Posts:1413
Joined:Sun Jan 04, 2009 8:18 pm
Location:Sitting on my pile of authentic minnesota dirt

Re: The definitive 3.5" Lcd review

Post by thewise1 » Mon Jan 11, 2010 3:38 pm

Yup, the specs say it takes 12v dc so that's probably the max.
ImageImageImageImageImageImage

User avatar
thewise1
Portablizer Extraordinaire
Posts:1413
Joined:Sun Jan 04, 2009 8:18 pm
Location:Sitting on my pile of authentic minnesota dirt

Re: The definitive 3.5" Lcd review

Post by thewise1 » Sat Jan 16, 2010 12:59 am

I've been messing around with screen #3 and playing OoT on it and in the fire temple and at night I can't see anything. I want to experiment with some of the resistors on the board and maybe find one for the contrast and put a pot in parallel with it. So I have 2 questions

Can I fry the screen by bridging random fuses on the board when it's running on 3v?

And would using a POT in parallel with a resistor be the same as 2 resistors, but variable?

I'd love to have adjustable contrast on this screen. (trying to walk around in front of gannons castle is a nightmare :roll: )
ImageImageImageImageImageImage

Kyo
Senior Member
Posts:2470
Joined:Tue Jan 02, 2007 11:59 am
Location:Germany
Contact:

Re: The definitive 3.5" Lcd review

Post by Kyo » Sat Jan 16, 2010 6:53 am

1) Yes. It is possible to fry it, although not that likely.
2) It's the same as having two resistors in parallel

User avatar
killercottontail
Posts:51
Joined:Thu Dec 03, 2009 7:03 pm
Location:Warshington, USA

Re: The definitive 3.5" Lcd review

Post by killercottontail » Sat Jan 16, 2010 3:20 pm

This seller on ebay (business-sun) has two models of 3.5" screen with brightness adjustment (not sure about contrast). One of the screens is the model you're dealing with (#3) and one is a different model that I haven't seen.

http://cgi.ebay.com/mini-3-5-TFT-Color- ... 518fd2b0de

http://cgi.ebay.com/3-5-TFT-Color-LCD-C ... 518fce348e

not to mention 4.3" and 7" lcds on the cheap. :mrgreen:
“I reject your reality and substitute my own.” -Adam Savage

Image

User avatar
thewise1
Portablizer Extraordinaire
Posts:1413
Joined:Sun Jan 04, 2009 8:18 pm
Location:Sitting on my pile of authentic minnesota dirt

Re: The definitive 3.5" Lcd review

Post by thewise1 » Sat Jan 16, 2010 5:14 pm

:x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x :x

I COULD HAVE JUST BOUGHT THAT!

Oh well, I supposed I could buy that one too. I was planning on buying a second 3.5" screen since they're so convenient. I think I'd rather buy that one then risk frying my screen.
ImageImageImageImageImageImage

User avatar
killercottontail
Posts:51
Joined:Thu Dec 03, 2009 7:03 pm
Location:Warshington, USA

Re: The definitive 3.5" Lcd review

Post by killercottontail » Sat Jan 16, 2010 5:24 pm

Haha no problem. Let us know how it works out! I'm not sure i fully understand what the other button does... :? But it's certainly a good deal.
“I reject your reality and substitute my own.” -Adam Savage

Image

User avatar
hailrazer
Portablizer Extraordinaire
Posts:2764
Joined:Mon Jul 10, 2006 8:57 pm
Location:Georgia Sweet Georgia

Re: The definitive 3.5" Lcd review

Post by hailrazer » Sat Jan 16, 2010 5:26 pm

I "think" it flips the image for a backup camera.
My Portable Systems:
Image
-----Genimini---------Darth64---------Dreamtrooper--------Ncube---------Kamikazi64---N64Boy Advance

User avatar
thewise1
Portablizer Extraordinaire
Posts:1413
Joined:Sun Jan 04, 2009 8:18 pm
Location:Sitting on my pile of authentic minnesota dirt

Re: The definitive 3.5" Lcd review

Post by thewise1 » Sat Jan 16, 2010 5:27 pm

Switch between 2 signals probably. Normally it automatically finds the signal, but when there are 2 signals at the same time you could switch between them,
ImageImageImageImageImageImage

User avatar
killercottontail
Posts:51
Joined:Thu Dec 03, 2009 7:03 pm
Location:Warshington, USA

Re: The definitive 3.5" Lcd review

Post by killercottontail » Sat Jan 16, 2010 5:40 pm

Just ordered one. Hopefully it will work out well :) Strange that it's the same price as the model without the buttons but it's worth a test. :D
“I reject your reality and substitute my own.” -Adam Savage

Image

Kyo
Senior Member
Posts:2470
Joined:Tue Jan 02, 2007 11:59 am
Location:Germany
Contact:

Re: The definitive 3.5" Lcd review

Post by Kyo » Wed Jan 20, 2010 4:05 pm

My #3 arrived. It's different.

Image
Image
Image
Image
Image


It has some problems (this is pal) - the image is moved a bit to the left, thus cutting off some of it. Nothing too horrible, but kind of irritating. Two tact switches - one mirrors the image, the other one makes it brighter.

User avatar
eagle5953
Moderator
Posts:1892
Joined:Mon Jul 07, 2008 5:06 pm
360 GamerTag:eagle5953
Steam ID:eagle5953
Contact:

Re: The definitive 3.5" Lcd review

Post by eagle5953 » Thu Jan 21, 2010 12:25 am

Awesome. I ordered the no. 3 as well, but I'm still waiting on the shipping from China.

Flips the image, huh? That'd make Mario 3 a challenge... might be a fun competition. Hope mine's got that.

wallydawg
Senior Member
Posts:2233
Joined:Mon Apr 05, 2004 11:28 am
Location:Sorry Illinois
Contact:

Re: The definitive 3.5" Lcd review

Post by wallydawg » Thu Jan 21, 2010 3:03 am

killercottontail wrote:This seller on ebay (business-sun) has two models of 3.5" screen with brightness adjustment (not sure about contrast). One of the screens is the model you're dealing with (#3) and one is a different model that I haven't seen.

http://cgi.ebay.com/mini-3-5-TFT-Color- ... 518fd2b0de

http://cgi.ebay.com/3-5-TFT-Color-LCD-C ... 518fce348e

not to mention 4.3" and 7" lcds on the cheap. :mrgreen:
I bought #1 from this seller for the nomad mod and I think it is DOA. It didn't come with the power cord or instructions, which we really dont need for what we use these screens for, but it would have been nice to know for testing purposes if it was working when I got it or not.

Im getting nothing on the screen so maybe I just wired something up wrong on the power side of things, or bad surface mount soldering (oh how I hate surface mount soldering), I'll have to try it on a different system just to see. Has anybody done any troubleshooting on any of these screens, maybe a fuse to jump or replace? LCD cable looks good, no rips or nothing (just pretty long haha)
Image

User avatar
nachoz12341
Posts:124
Joined:Thu Dec 17, 2009 4:04 pm

Re: The definitive 3.5" Lcd review

Post by nachoz12341 » Thu Feb 11, 2010 8:18 pm

anyone know if this will work there is 7 so theres a bit to share but leave me 1

http://cgi.ebay.com/USED-Mobile-Authori ... 33570ac380" onclick="window.open(this.href);return false;

User avatar
hailrazer
Portablizer Extraordinaire
Posts:2764
Joined:Mon Jul 10, 2006 8:57 pm
Location:Georgia Sweet Georgia

Re: The definitive 3.5" Lcd review

Post by hailrazer » Thu Feb 11, 2010 9:27 pm

nachoz12341 wrote:anyone know if this will work there is 7 so theres a bit to share but leave me 1

http://cgi.ebay.com/USED-Mobile-Authori ... 33570ac380" onclick="window.open(this.href);return false;
Wrong thread. This is a review thread for 3.5" screens. :roll:
My Portable Systems:
Image
-----Genimini---------Darth64---------Dreamtrooper--------Ncube---------Kamikazi64---N64Boy Advance

Post Reply