Using Cellphone/mobile Phone Display Screen

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!

i have seen some projects where people salvaged displays from old cell phones and hooked them up to arduino.

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: 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.

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.

Using Cellphone/mobile Phone Display Screen 1

For example this 5.5 inch Moto G2 display costs only about $18.

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. 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 am 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. 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 am 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.

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! )

marcushh777please 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! ) 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 am 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.

Using Cellphone/mobile Phone Display Screen 2

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

Connector

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.

Oh looks like nobody has done this before..this is the kind of diplay im talking about:DisplayConnectorI 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.

the touchpanel controller would not be the same one that the official pine64 touchpanel has. you would 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 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 would 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 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 does not work in his solution. lolI 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 does not work in his solution. lol 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 does not work in his solution.

links please? lol 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 does not work in his solution.

links please?

Low tech way to do it, keep the phone and use it via USB.

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. 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.

.

(PDF) Liquid crystal display screens as stimulators for visually evoked potentials: Flash effect due to delay in luminance changes

diffuser in an above-mentioned way, and third, we check the flashing effect after reducing the contrast of However, when using another LCD monitor Tokyo, Japan), the contrast must be reduced to 65 % to completely remove the luminance artifact and such contrast does not match the ISCEV standard. An alternative way might be to decrease the checksize. For example, if the checksize can be reduced so that one pixel equals one check, then one cannot resolve the pattern when one is sufficiently far away from the screen. In that case, no VEP should be obtained. But, due to the luminance artifact, there should be a sizable VEP, a flash VEP. Given this, the VEP amplitude can be affected depending on the checksize, but it is minimal for standard check sizes. One of the ways to minimize the flash effect might be to optimize the contrast of the checkerboard luminance. The transient change of the luminance is constant depending on the contrast of the checker- board and specific to the LCD monitor. The latency delay in the p-VEP is also constant although it did not reduction in the contrast of the checkerboard to 81 % still complies with the ISCEV standards (checker- However, a reduction in the contrast may not eliminate the flash effect in all LCD monitors in the market. Further investigations on how to eliminate the flash We did not record pattern ERGs (PERGs). However, might be easily contaminated by flash responses. In other words, PERGs might be better s iological indicator of flash effects. And for those who want to record PERGs with LCD screens, a correspond- ing validation with PERGs is necessary. In conclusion, the p-VEP waveforms are affected by a delay in the reversal phase of a checkerboard might be reduced by optimizing the contrast of the LCD for pattern stimulation is comparable to the ated on a CRT screen, when the LCD specific parameters such as input lag and response time are Acknowledgments Support for this study was provided by Researches on Sensory and Communicative Disorders from the Conflict of interest H. Funada is an employee of Tomey Corp., Japan. None of other authors has any commercial Fig. 8 Comparisons of each parameter between the p-VEP recorded using different checkerboard contrasts of the LCD. a No significant difference was found in the P100 amplitude between the responses elicited by 81 % contrast stimulus compared to that by 97 % stimulus. c No significant difference was observed in the N75 and P100 latency between the VEPs elicited by 81 and 97 % contrast

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