Collecting information on alternative displays - please contribute

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upy
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Re: Collecting information on alternative displays - please contribute

Post by upy » Sun May 22, 2016 8:12 am

calmkiller wrote:
Popcorn wrote:
calmkiller wrote:
Having the same issue. I have the bw screen sold by e-life and mine is setup exactly like the pictures. Same problem. Should I post pics as well?

Maybe we need to mod it to run on 5v? Even thought this board has been confirmed to run without mod?

I have the same screen as both of you guys. Bought it from vendor she-love. The screen needs minimum 6V and an active video source or else it will remain blank/black and appear like it's off. I'm working now to desolder the IC CHMC C0B 1509-5.0 but it's super buried around those four capacitors. Gonna be a hard squeeze to get in there.
Thiswas myproblem too :D now everythingis fine


Yup. I can confirm this. Last night I hooked up the screen to my wii and powered it through the pi board. Worked great. My problem was I didn't have an active video source. My screen works fine on 5v without any mod.

grenade44
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Re: Collecting information on alternative displays - please contribute

Post by grenade44 » Mon May 23, 2016 12:57 am

I have this BW screen and was working fine without an issue over 5v
Image

Now it's glued in the shell it's starting to flicker and now always turn on, do I need to run a cable from a IC pin? Or does it need the IC chip? After the screen sorts it self out it stays on fine. Then if I turn it off and on it still works fine. If I leave in off for a while the problems start again. Any ideas?

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Fleder
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Re: Collecting information on alternative displays - please contribute

Post by Fleder » Mon May 23, 2016 1:00 am

grenade44 wrote:I have this BW screen and was working fine without an issue over 5v

Now it's glued in the shell it's starting to flicker and now always turn on, do I need to run a cable from a IC pin? Or does it need the IC chip? After the screen sorts it self out it stays on fine. Then if I turn it off and on it still works fine. If I leave in off for a while the problems start again. Any ideas?
The solutions is right in this very thread. In the first Post.
https://s20.postimg.org/6jvbxrfml/mamo_board_2.jpg

Popcorn wrote:@Cannikin Are you using your 640 screen with composite video or with VGA and an HDMI adapter?
I am going to use mine with an active VGA to HDMI Adapter. I hope this will fit into the case. It is getting cramped in there.


Thank you [mention]Camble[/mention] for the information.
Popcorn wrote:.. Also, it looks like you are missing my other alibaba screen.
Also maybe the wiki is a better location for this info?
Thanks.
Oh, yes? Which one?
Sure, i am going to collect them now until i find the time later today to create the wiki pages for it.

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Popcorn
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Re: Collecting information on alternative displays - please contribute

Post by Popcorn » Mon May 23, 2016 1:20 am

Fleder wrote:
grenade44 wrote:I have this BW screen and was working fine without an issue over 5v

Now it's glued in the shell it's starting to flicker and now always turn on, do I need to run a cable from a IC pin? Or does it need the IC chip? After the screen sorts it self out it stays on fine. Then if I turn it off and on it still works fine. If I leave in off for a while the problems start again. Any ideas?
The solutions is right in this very thread. In the first Post.
https://s20.postimg.org/6jvbxrfml/mamo_board_2.jpg

Popcorn wrote:@Cannikin Are you using your 640 screen with composite video or with VGA and an HDMI adapter?
I am going to use mine with an active VGA to HDMI Adapter. I hope this will fit into the case. It is getting cramped in there.


Thank you [mention]Camble[/mention] for the information.
Popcorn wrote:.. Also, it looks like you are missing my other alibaba screen.
Also maybe the wiki is a better location for this info?
Thanks.
Oh, yes? Which one?
Sure, i am going to collect them now until i find the time later today to create the wiki pages for it.
Awesome. I just added mine to the wiki. It's listed as the xianjie one and the BW Variant 2. Thanks!

grenade44
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Re: Collecting information on alternative displays - please contribute

Post by grenade44 » Mon May 23, 2016 1:38 am

Fleder wrote:
grenade44 wrote:I have this BW screen and was working fine without an issue over 5v

Now it's glued in the shell it's starting to flicker and now always turn on, do I need to run a cable from a IC pin? Or does it need the IC chip? After the screen sorts it self out it stays on fine. Then if I turn it off and on it still works fine. If I leave in off for a while the problems start again. Any ideas?
The solutions is right in this very thread. In the first Post.
https://s20.postimg.org/6jvbxrfml/mamo_board_2.jpg

Popcorn wrote:@Cannikin Are you using your 640 screen with composite video or with VGA and an HDMI adapter?
I am going to use mine with an active VGA to HDMI Adapter. I hope this will fit into the case. It is getting cramped in there.


Thank you [mention]Camble[/mention] for the information.
Popcorn wrote:.. Also, it looks like you are missing my other alibaba screen.
Also maybe the wiki is a better location for this info?
Thanks.
Oh, yes? Which one?
Sure, i am going to collect them now until i find the time later today to create the wiki pages for it.
As it worked fine without any problem I didn't think it would need doing. Thanks I will do that tonight.

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Re: Collecting information on alternative displays - please contribute

Post by oooohan » Mon May 23, 2016 4:18 pm

Here's some info on another BW screen from Amazon.com. This one's from ATian Direct, but looks different from the ones from ATian Direct in the old forums. See below for pictures - the board is huge (approx 95mm x 55mm), and won't fit in landscape orientation in the DMG case. Because of this, I didn't bother removing the screen from the enclosure, so I don't know its exact measurements. I've included pictures of the box so you can return it without opening it if you don't want it.

[spoiler="rear of enclosure"]Image[/spoiler]
[spoiler="board width"]Image[/spoiler]
[spoiler="board height"]Image[/spoiler]
[spoiler="box top"]Image[/spoiler]
[spoiler="box side"]Image[/spoiler]

ako5ta
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Re: Collecting information on alternative displays - please contribute

Post by ako5ta » Mon May 23, 2016 6:46 pm

Came accross this http://www.gigaparts.com/3-5-LCD-Displa ... ry-Pi.html seems they have the screen in stock. Postage costs for me are way too high even more than the screen so going to give it a miss.

Robvp
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Re: Collecting information on alternative displays - please contribute

Post by Robvp » Mon May 23, 2016 10:41 pm

Got the Amazon.com screen from niceshopping, does not work with 5v out of the box, worked great with a 12v ac adapter from my router though

PCB
http://i.imgur.com/Kaa9mnu.jpg

plugged into 12v
http://i.imgur.com/XPXrkqd.jpg

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Fleder
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Re: Collecting information on alternative displays - please contribute

Post by Fleder » Tue May 24, 2016 1:05 am

[mention]Robvp[/mention] and [mention]oooohan[/mention]
Thanks, but could you please post the dimensions, too? As listed in the wiki.
There should be every information that is needed.

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Camble
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Re: Collecting information on alternative displays - please contribute

Post by Camble » Tue May 24, 2016 7:34 am

I've updated this with the active area (69x53mm).

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