[HELP] HDMI 2.0 to MIPI-DSI / LVDS [SOLVED]

[Kilrah]

That's the main problem, none of these boards can just take an HDMI/DP/whatrever input and convert it, so you can't have a "real" projector that is simply a "passive" display device you can connect anything to.
Everything will have to be played by/processed on the board.

One thing I'm dubious of and that was never talked of but is nearly more important is the quality of the optics. I doubt anything you can easily obtain is worth sending a 4K picture through. Not much worth the trouble to create a 4K display part and end with a muddy projected image full of distorsion and chromatic aberration.

[Oneminde]

Not sure who you are replying to Kilrah or if it is just in general, but I'll take a shot at it.

Yes, you need to run things localy, aka have an OS. Snapdragon support both Android and Linux. Dev board can have external HDD - so, solved.

When it comes to optics, yes, this is extremely important, but its not a problem. There are plenty of suppliers for optics out there. Optics is the single most expensive part of any projectors because good glass is expensive.

If there is a will then there is a solution.

[RyanD]

I'm looking for something like this too. Is this what we are looking for? https://world.taobao.com/item/523130602739.htm#detail

Or this seems to be the one I would want: https://world.taobao.com/item/45396966558.htm?id=45396966558&scm=1007.12006.39884.i523130602739&pvid=4908172e-0f8f-4df3-b2b5-db31fbfcde12

Does this come with everything I need to run the experia display? Thanks

[Oneminde]

Hello.

No that's not my solution, what I went for is more or less a complete PC. Intrinsyc Open-Q 820 - allow for full Linux or Windows OS, external HDD's and much more. You can essentially use it as a media hub and 4K projector turning the project into two purposes. One DLP printer and one 4K projector / media hub. The reasons I wanted this one is so that the printer have all its hardware located on one board.

The Snapdragon 820 dev board is essentially the same hardware that is running the Sony Xperia Z5 Premium but it keeps all the input/output allowing you to use it as a normal computer.

I will however check your links.

https://www.intrinsyc.com/snapdragon-embedded-development-kits/snapdragon-820-development-kit/

[kony]

Please do keep posting updates on this, migtht be in future crafted into something even more interesting than a projector.

[Oneminde]

I'm looking for something like this too. Is this what we are looking for? https://world.taobao.com/item/523130602739.htm#detail

Or this seems to be the one I would want: https://world.taobao.com/item/45396966558.htm?id=45396966558&scm=1007.12006.39884.i523130602739&pvid=4908172e-0f8f-4df3-b2b5-db31fbfcde12

Does this come with everything I need to run the experia display? Thanks

If you look at the specs, its 4K@30Hz which is the whole issue with these devices. 30Hz is too low to bother. So far, the only card that will give you 60Hz is the Snapdragon 820/821. But, a custom card can be made based upon this processor, that is if anyone wants to... he he. The Open-Q 820 is more than fine for me.

Oneminde

[RyanD]

30 hz is fine for me I'm making an SLA printer. I'm just worried that I buy this board and the xperia screen but find out the connector is different and unable to figure out the solution. Do you think this thing would plug and play the xperia z5 premium screen? it says it outputs mipi dsi 8 lane does that automatically tell me it will run the xperia screen if all i know is that it seems like that screen is mipi dsi and since it's UHD it must be 8 lane?

Do you know of a better solution for running these phone screens at 30hz from displayport or other common port? I need a small UHD screen for very cheap to make my 3d printer a reality.

[Oneminde]

30 hz is fine for me I'm making an SLA printer. I'm just worried that I buy this board and the xperia screen but find out the connector is different and unable to figure out the solution. Do you think this thing would plug and play the xperia z5 premium screen? it says it outputs mipi dsi 8 lane does that automatically tell me it will run the xperia screen if all i know is that it seems like that screen is mipi dsi and since it's UHD it must be 8 lane?

Do you know of a better solution for running these phone screens at 30hz from displayport or other common port? I need a small UHD screen for very cheap to make my 3d printer a reality.

The Open-Q 820 states:

- 2x MIPI-DSI 4-lane, 60fps, up to 2560×1600 (single port), 4096×2160 (dual port) - that is 8 lanes.
- 1x HDMI 2.0 up to 4096×2160, 60fps

I am no expert but the refresh rate aka Hz is in part due to HDMI version. 30Hz is HDMI 1.4 and 60Hz is HDMI 2.0 and in part how video is handled in the processor and ofc software.

You only need 30Hz for the printer, that is true, but you ask if the display is capable of running at 30Hz rather than it's native 60Hz and that I don't know. I think it would, but don't take that as a defined answer. Unless someone ells can definitely say yes it will, I think what you need to do is test it. Buy one of the boards you posted and test.

There is also this board by Hackaday that you can check out.

https://hackaday.io/project/364-mipi-dsi-display-shieldhdmi-adapter

[Kilrah]

I would not expect to be able to connect an 8-lane 60p capable display to a board that only supports 4 lanes/30p.

[Oneminde]

I would not expect to be able to connect an 8-lane 60p capable display to a board that only supports 4 lanes/30p.

The two boards you linked to is duel 4 lane, aka 8 lanes. Give one of them a go. In fact, I might consider one of them for the printer and the Open-Q for the media hub projector.

[RyanD]

Ok I get paid this week so I'll drop the $160 on the board and screen and well see how it goes.

[Oneminde]

Ok I get paid this week so I'll drop the $160 on the board and screen and well see how it goes.

Kewl. Which of the boards ?

[Kilrah]

Yep, which board?
If you refer to this, which I assume given the price you quote:

Or this seems to be the one I would want: https://world.taobao.com/item/45396966558.htm?id=45396966558&scm=1007.12006.39884.i523130602739&pvid=4908172e-0f8f-4df3-b2b5-db31fbfcde12

From the description this does NOT come with a board, it's only a bunch of specs, documentation and development tools, the board only comes with the $750 package you also linked to.

[Oneminde]

Yep, which board?
If you refer to this, which I assume given the price you quote:

Or this seems to be the one I would want: https://world.taobao.com/item/45396966558.htm?id=45396966558&scm=1007.12006.39884.i523130602739&pvid=4908172e-0f8f-4df3-b2b5-db31fbfcde12

From the description this does NOT come with a board, it's only a bunch of specs, documentation and development tools, the board only comes with the $750 package you also linked to.

Interesting, so as far as you can tell, the link forward you to the adapter board and not the processing board. Good to know.

[Kilrah]

Not even, seems there's no hardware at all with the $75 pack, only doc/software tools.

3. Evaluation Board Package Description:
In order to meet the different needs of developers, this product launch 3 different price points and different content packages:
Package A: containing only IC information and some debugging tools to assist the developer to complete the project.
Package II: contains a package of information, and includes a hardware evaluation board and evaluation board schematics, for developers and hardware verification reference.
Package III: Package A and Package II contains, and contains its driver source file, developers can make a direct secondary development.

The "Package II Click here:HDMI to MIPI_TC358870XBG virtual evaluation board _ helmet" link points to the $750 package, so the $75 is obviously the "Package A" description.
There's a link to "Package III" but it's broken.
Package II seems to have the eval board, but no display or display adapter.

[Oneminde]

Not even, seems there's no hardware at all with the $75 pack, only doc/software tools.

3. Evaluation Board Package Description:
In order to meet the different needs of developers, this product launch 3 different price points and different content packages:
Package A: containing only IC information and some debugging tools to assist the developer to complete the project.
Package II: contains a package of information, and includes a hardware evaluation board and evaluation board schematics, for developers and hardware verification reference.
Package III: Package A and Package II contains, and contains its driver source file, developers can make a direct secondary development.

The "Package II Click here:HDMI to MIPI_TC358870XBG virtual evaluation board _ helmet" link points to the $750 package, so the $75 is obviously the "Package A" description.
There's a link to "Package III" but it's broken.
Package II seems to have the eval board, but no display or display adapter.

I C. Kinda ripping people off. Its better to get the datasheet for the Toshiba processor they are using - for free - and design a board around it. Or get the Hackaday board since its complete and support 30Hz.

[RyanD]

The hackaday board does only 1080p it can not do 4k, so there's nothing there to be had.

http://imgur.com/a/yhMGS

Designing a new board sounds fun, but I've never done anything like that before and this seems like a pretty difficult project for a first foray into board design.

[RyanD]

Not even, seems there's no hardware at all with the $75 pack, only doc/software tools.

3. Evaluation Board Package Description:
In order to meet the different needs of developers, this product launch 3 different price points and different content packages:
Package A: containing only IC information and some debugging tools to assist the developer to complete the project.
Package II: contains a package of information, and includes a hardware evaluation board and evaluation board schematics, for developers and hardware verification reference.
Package III: Package A and Package II contains, and contains its driver source file, developers can make a direct secondary development.

The "Package II Click here:HDMI to MIPI_TC358870XBG virtual evaluation board _ helmet" link points to the $750 package, so the $75 is obviously the "Package A" description.
There's a link to "Package III" but it's broken.
Package II seems to have the eval board, but no display or display adapter.

You're totally right, and at $750 it seems like a pretty bad deal, I think Oneminde's board is only $500.00. I'm still looking for a solution I mean a full on xperia z5 to drive the screen would be less. But I need to run the software on my computer and push it to the screen and I don't think the z5 phone itself wants to play nice that way.

[Oneminde]

You're totally right, and at $750 it seems like a pretty bad deal, I think Oneminde's board is only $500.00. I'm still looking for a solution I mean a full on xperia z5 to drive the screen would be less. But I need to run the software on my computer and push it to the screen and I don't think the z5 phone itself wants to play nice that way.

Correct. Both Linux and Windows have edition for Snapdragon, or ARM edition as it also is know.
If there were a simple and cheaper way to run this display, I would be all over it.

[RyanD]

These guys claim to have the datasheet, but they only use some sort of odd currency called P-coins or want minimum $800.00 to access the database of datasheets for a year. Any ideas?

[Oneminde]

Yes I am aware of the situation. I have not found the data sheet either.

[RyanD]

Yes I am aware of the situation. I have not found the data sheet either.

Check your PM's

http://imgur.com/a/5UbHJ

Can I post the link to file here?

[Oneminde]

Can I post the link to file here?

That is up to you since its your effort. Very happy about the fact that you manage to access the PDF. Thanks buddy.

Oneminde

[ebclr]

Just 62 bucks

? 4 inches 800x480 pixel TFT color LCD with
MIPI DSI interface and capacitive touch screen


http://www.mouser.com/ProductDetail/STMicroelectronics/STM32F469I-DISCO/?qs=sGAEpiMZZMtavWIq7L07Bc86AqLmH32VNudgwLb3e3F2joTf0OIx%252bw%3d%3d

[Oneminde]

Just 62 bucks

? 4 inches 800x480 pixel TFT color LCD with
MIPI DSI interface and capacitive touch screen


http://www.mouser.com/ProductDetail/STMicroelectronics/STM32F469I-DISCO/?qs=sGAEpiMZZMtavWIq7L07Bc86AqLmH32VNudgwLb3e3F2joTf0OIx%252bw%3d%3d

Perhaps you missed the BIG point of this thread. Its not about a random LCD screen, its about Sharps smallest 4K resolution screen, primarily for diy SLA printer, but can also be used as a projector for TV and movie.