using Cellphone/mobile phone display screen
#1
Hi,

 I have a spare 4.3 inch mobile phone (moto e) display. Can it be connected to the pine64 ? is there some cable or extension need to connect this? are these compatible?? how do I go about setting this up?

I see that these displays are hi res and pretty cheap. Some replacement 5 inch displays with touch are less than $20.  I searched the forum and dont see anyone using these.

Help!
  Reply
#2
this is probably pretty hard, but could potentially be done via I2C connection. it would depend on the display.
i have seen some projects where people salvaged displays from old cell phones and hooked them up to arduino.
like this one:
http://www.tinkernut.com/portfolio/make-...ne-part-1/
  Reply
#3
(08-02-2016, 11:28 PM)jodybrown99 Wrote: this is probably pretty hard, but could potentially be done via I2C connection. it would depend on the display.
i have seen some projects where people salvaged displays from old cell phones and hooked them up to arduino.
like this one:
http://www.tinkernut.com/portfolio/make-...ne-part-1/

Wait a minute. I am not talking about the displays shown in your link above.  Im talking about TOUCH based screens like used androids and iphones with 5 inch or 5.5 inch high resolution and high pixel density screens.  Replacement displays are pretty cheap. For example this 5.5 inch Moto G2 display costs only about $18.

http://www.amazon.in/Replacement-Display...B00TS7LJ2Y
  Reply
#4
(08-02-2016, 10:50 PM)desai_amogh Wrote:  I have a spare 4.3 inch mobile phone (moto e) display. Can it be connected to the pine64 ? 

This depends on what you mean, connected.  

... the video on this board (hardware and software) is unfortunately entirely proprietary; which is sad but the case for the moment. You might be able to hack a connection but you are going to have to do some serious reverse engineering and guess-work to make it work... I'm assuming you mean the DSI connector ?

or, did you mean the gpio pins ?  If you have the specs of the 4.3 inch display, and are willing to bit bang the connection to the gpio, the display might be usable like any other lcd attachment matrix.  Although, it would probably be better to purchase an LCD display for that purpose.

There is only one LCD display that works with the Android image, and specifically only ONE of those images works with the LCD display.  (you may download it on-line)

With a cable extender and the right hacking, you might be able to attach an external hdmi LCD (non touch) to the DSI connector,  but there is no one doing that now, and there are no instructions.  There are also 6 pin touch cable extenders available... so who knows.  Everything is still too new to have much experience with this activity.
marcushh777    Cool

please join us for a chat @  irc.pine64.xyz:6667   or ssl  irc.pine64.xyz:6697

( I regret that I am not able to respond to personal messages;  let's meet on irc! )
  Reply
#5
(08-03-2016, 09:26 AM)MarkHaysHarris777 Wrote:
(08-02-2016, 10:50 PM)desai_amogh Wrote:  I have a spare 4.3 inch mobile phone (moto e) display. Can it be connected to the pine64 ? 

This depends on what you mean, connected.  

... the video on this board (hardware and software) is unfortunately entirely proprietary; which is sad but the case for the moment. You might be able to hack a connection but you are going to have to do some serious reverse engineering and guess-work to make it work... I'm assuming you mean the DSI connector ?

or, did you mean the gpio pins ?  If you have the specs of the 4.3 inch display, and are willing to bit bang the connection to the gpio, the display might be usable like any other lcd attachment matrix.  Although, it would probably be better to purchase an LCD display for that purpose.

There is only one LCD display that works with the Android image, and specifically only ONE of those images works with the LCD display.  (you may download it on-line)

With a cable extender and the right hacking, you might be able to attach an external hdmi LCD (non touch) to the DSI connector,  but there is no one doing that now, and there are no instructions.  There are also 6 pin touch cable extenders available... so who knows.  Everything is still too new to have much experience with this activity.

Oh looks like nobody has done this before.. 

this is the kind of diplay im talking about:
Display
[Image: sku_370803_1.jpg]

Connector
[Image: sku_370803_3.jpg]

I initially though the DSI connector could just use this Android touch display directly , but its a different tech altogether looks like.  Pine64 has one dsi port + a touch pad port.  But if you see the pic above.  the final larger port at the bottom contains both display/touchpad signals.  the touchpad connects lil above near the chip to merge into the final large connector.

I guess as you say some hacking and an extension cable can get it working. but im not much into this kind of hacking.
  Reply
#6
yeah this would need MAJOR hacking. both hardware and software. that connector looks like it has 2 rows of pins, the pine64 lcd connector does not.
the touchpanel controller would not be the same one that the official pine64 touchpanel has. you'd be basically writing your own drivers, bare minimum. and look at the other threads here to see how far that's going in order to simply use the official lcd on linux...
if you are a professional software developer (with no job to take all your time) you might have a fighting chance. and if you succeed you can probably get a job anywhere you want Smile
  Reply
#7
lol Big Grin I pass.

Btw there is this hacaday.io post wher someone has hacked something to use the HDMI input to translate into such android displays. Touch doesn't work in his solution.
  Reply
#8
(08-04-2016, 11:33 PM)desai_amogh Wrote: lol Big Grin I pass.

Btw there is this hacaday.io post wher someone has hacked something to use the HDMI input to translate into such android displays.  Touch doesn't work in his solution.

links please?
  Reply
#9
(10-21-2018, 03:51 AM)shrinidhinhegde Wrote:
(08-04-2016, 11:33 PM)desai_amogh Wrote: lol Big Grin I pass.

Btw there is this hacaday.io post wher someone has hacked something to use the HDMI input to translate into such android displays.  Touch doesn't work in his solution.

links please?

Low tech way to do it, keep the phone and  use it via USB.  
https://joshuawoehlke.com/android-raspbe...-over-usb/

Or for example if you have Iphone 4 LCD you can connect them to the HDMI out via this board
https://hackaday.com/2014/08/19/a-mipi-d...i-adapter/

If you want to build your own you most likely would need to have a FPGA to bridge the gap between the protocol/interface being used.  The ICE FPGA can be had for around $15 and can handle up to 720P if required. You might get higher resolution at a lower frame rate. 

https://www.latticesemi.com/Products/FPGAandCPLD/iCE40 (
  • Match your preferred display to your application processor with interfaces such as RGB, 7:1 LVDS and MIPI DPI/DBI )
    Older video explaining how the reverse engineering process can work, and they give a nice example of reusing a LCD screen. https://www.youtube.com/watch?time_conti...TedIzmguP0
  Reply
#10
Figure I would add several other video links
https://www.youtube.com/watch?v=Cl7rshPe-x4 (Ben Heck explaining how this very difficult) However with Cheap FPGA and such tool kits becoming popular it is not as difficult.
https://www.youtube.com/watch?v=8LEjZMAbedA

Another link to the iphone 4 display -> https://hackaday.io/project/364-mipi-dsi...mi-adapter
https://hackaday.io/project/364-mipi-dsi...-published
https://hackaday.io/project/42944-kite-o...smartphone
  Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  LCD Screen for running Octoprint sb_88 2 2,350 03-14-2017, 08:40 AM
Last Post: sb_88
  touch screen not working mike280z 1 1,738 12-22-2016, 12:46 PM
Last Post: Bluphire
  LCD screen problem; borahan 4 2,863 09-27-2016, 07:16 PM
Last Post: dkryder
  output on LCD screen Rigor_M 1 1,678 07-18-2016, 12:41 PM
Last Post: Rigor_M
  dead LCD screen? jdmwrx94 0 1,159 07-16-2016, 01:43 PM
Last Post: jdmwrx94
  Touch Screen monitor/module riahim 4 3,071 07-06-2016, 08:07 AM
Last Post: riahim
  How to install Touch Screen? firelegend 1 2,053 06-15-2016, 08:51 PM
Last Post: janjwerner
  512 and 7" touch screen? ShreddinPB 4 2,528 06-15-2016, 08:55 AM
Last Post: ShreddinPB
  Is it possible to have more than one screen? MostHated 2 2,010 03-02-2016, 03:42 PM
Last Post: MostHated

Forum Jump:


Users browsing this thread: 1 Guest(s)