Collecting information on alternative displays - please contribute

[dirtybeagles]

[mention]popcorn[/mention]

This is my display off Niceshopping Amazon. http://www.amazon.com/BW-3-5-Inch-Monit ... detailpage

Before:

IMG_20160530_100346.jpg (2.51 MiB) Viewed 10684 times

popcorn's suggestion:

IMG_20160530_110116.jpg (2.19 MiB) Viewed 10684 times

I placed the jumper and it does seem to improve the jitter in the screen, but, I still think it is being under powered. If i leave the screen on for a while, it does seem to get worse in quality.

Popcorn, have you thought of removing the IC? Would this help this screen? From reading the reviews on amazon, everyone is saying it needs 12V to run.

Here is a video when retropie starts the blank screen saver. You should be able to see the jitter. https://goo.gl/photos/tNMSozsK2i2LsHS28

[dirtybeagles]

All working anyway. I can confirm no modification is required

Hey Robots86. Check out my last post... I believe you are correct about this screen working out of the box, but, I still think it is under powered. I get jitter on mine and the color seems to not be as deep as others. I think there still needs to be some modification. I am wondering if you can truly get it to run perfect off 5v.

[_N0x]

@Fleder

I just solderd the screen to the Pi and corrected the bezels aaaand...


It says 663x463

But somehow it doesn't look right... Maybe because its so small? Or maybe because Im wrighting in a 5.5" Phone

[Fleder]

@Fleder

I just solderd the screen to the Pi and corrected the bezels aaaand...
It says 663x463

But somehow it doesn't look right... Maybe because its so small? Or maybe because Im wrighting in a 5.5" Phone

Remember that you have to change the resolution in retropie/emulation station to 640x480, too

[the watchmaker]

What command gives you exactely the resolution of the screen?

[Popcorn]

[mention]popcorn[/mention]

This is my display off Niceshopping Amazon. http://www.amazon.com/BW-3-5-Inch-Monit ... detailpage

Before: IMG_20160530_100346.jpg
popcorn's suggestion: IMG_20160530_110116.jpg

I placed the jumper and it does seem to improve the jitter in the screen, but, I still think it is being under powered. If i leave the screen on for a while, it does seem to get worse in quality.

Popcorn, have you thought of removing the IC? Would this help this screen? From reading the reviews on amazon, everyone is saying it needs 12V to run.

Here is a video when retropie starts the blank screen saver. You should be able to see the jitter. https://goo.gl/photos/tNMSozsK2i2LsHS28

Ive been testing my quite regularly and haven't experienced any screen jitters. But if you are, something definitely is up. Btw, looking at your pic, it doesn't look like its an exact same model as mine as your board looks a tiny bit different . There's a row of resistors there that I dont have. Cant say except maybe try a 12v step up then. It doesn't hurt.

[dirtybeagles]

[mention]popcorn[/mention]
Cant say except maybe try a 12v step up then. It doesn't hurt.

Just ordered at 12v step up and will install it Thursday.

[evilmonkey90210]

Hi, Igot this screen from Amazon.co.uk and was wondering if anyone could tell me what wires I connect up to my pi zero? I feel like a bit of a noob with this so if anyone could draw a quick diagram or something it would really help According to the wiki I have variant 7 of the BW screen so it should work on 5V unmodded. Thanks

Hi - Did you get this to work? Did you connect PIN 2 or PIN 3 on the chip?

I have the same screen.

Thanks!

[evilmonkey90210]

Hi,

I understand the principal but not quite sure what to to... I have a BW screen from amazon.co.uk I need to run off 5v. I've looked all over this thread, and some people have posted a similar board but not said if they got it working in the end.

The BW screen is listed as version 7 on the Wiki and says it does not need modding - but does not work well at 5V over the 12v power lead. Flickering and turns on and off.

The chip used is "CHMC SOH 1506-5.0" which i believe takes the 12v input and reduces it to 5v.

The bit i'm confused about is that I have seen a few people mod the chip so that the incoming 5v feed goes straight to the chip pin... but am unsure whether to connect it to PIN 2 or PIN 3?

Has anyone got a similar board and got this working?

IMG_1479.JPG (809.19 KiB) Viewed 10577 times

[Fleder]

What command gives you exactely the resolution of the screen?

Would you try "xrandr --current" in the terminal?