E13m3n7
Posts: 6
Joined: Fri Oct 05, 2018 7:25 pm

Honda Civic 2016 touch screen panel

Fri Oct 05, 2018 7:47 pm

Hi guys! I was able to salvage some Lcd 7inch touchscreen coming from honda civic. Im looking to converti them to Hdmi so I can use them for my SBCs. Here some picture from the circuit board in the back of the screen and from connector pinout from honda. It seem to have a converter board, lcd, digitizer and buttons. The audio unit (which I dont have) is base on Android OS. Any suggestion? ***Notice the little 6pin connector in upper left, that isnt connect to anything, im guessing its a kind of testing port or something... Ask if you need close picture or info
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aBUGSworstnightmare
Posts: 1226
Joined: Tue Jun 30, 2015 1:35 pm

Re: Honda Civic 2016 touch screen panel

Sun Oct 07, 2018 12:41 pm

E13m3n7 wrote: Hi guys! I was able to salvage some Lcd 7inch touchscreen coming from honda civic. Im looking to converti them to Hdmi so I can use them for my SBCs. Here some picture from the circuit board in the back of the screen and from connector pinout from honda. It seem to have a converter board, lcd, digitizer and buttons. The audio unit (which I dont have) is base on Android OS. Any suggestion? ***Notice the little 6pin connector in upper left, that isnt connect to anything, im guessing its a kind of testing port or something... Ask if you need close picture or info
Sorry, but this picture is useless! Do you have a spec (data sheet) or model number at least?

If you're lucky the screen has LVDS (or mini-LVDS) interface. But without access to the spec you can simply put it back to the rest of the car ...

E13m3n7
Posts: 6
Joined: Fri Oct 05, 2018 7:25 pm

Re: Honda Civic 2016 touch screen panel

Sun Oct 07, 2018 10:00 pm

Oh very sorry, first post, bad upload ... here we go ! ,its what I get so far. . didnt find daata sheet .. but I have the audio Unit diagram
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Last edited by E13m3n7 on Sun Oct 07, 2018 10:05 pm, edited 1 time in total.

E13m3n7
Posts: 6
Joined: Fri Oct 05, 2018 7:25 pm

Re: Honda Civic 2016 touch screen panel

Sun Oct 07, 2018 10:01 pm

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E13m3n7
Posts: 6
Joined: Fri Oct 05, 2018 7:25 pm

Re: Honda Civic 2016 touch screen panel

Sun Oct 07, 2018 10:07 pm

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E13m3n7
Posts: 6
Joined: Fri Oct 05, 2018 7:25 pm

Re: Honda Civic 2016 touch screen panel

Mon Oct 08, 2018 2:56 am

[attachment]Copy of DSC_0256_crop_309x309.JPG[/attachment]I think I just found that the LVDS+ and LVDS- are direct input in an eDP to LVDS bridge chip similar to PTN3460 [attachment]Capture.JPG[/attachment][attachment]sketch-1538965968376.jpg[/attachment]
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aBUGSworstnightmare
Posts: 1226
Joined: Tue Jun 30, 2015 1:35 pm

Re: Honda Civic 2016 touch screen panel

Mon Oct 08, 2018 4:38 am

What do you wantto use? The lcd display only or the whole thing(incl. PCAP etc).

For lcd only you will need to have the data sheet of la070wv7 - that's the displays part no (sl02 version would be best).
Details of your screen: http://www.panelook.com/LA070WV7-SL02_L ... 33465.html

For 'all': good luck in reverse engineering this unit.you're - most likely - on your own as nobody will be able to support.
Just an example with - what you think is an LVDS signal from an eDP bridge: this is your a single LVDS pair (LVDS= Low Voltage Differential Signaling), so question: what's the protocol beeing use, what's the purpose of this channel, etc.

E13m3n7
Posts: 6
Joined: Fri Oct 05, 2018 7:25 pm

Re: Honda Civic 2016 touch screen panel

Mon Oct 08, 2018 6:54 am

Tbh, I would really like having it working in one piece but I know it could be come complicated but getting some parts working like screen or touch button would be great too... I just want to learn! Ive got a few of these before they trash them after warranty... So!!... The head unit that come with this screen is a android phone converted to à car 😂! Some information from b-can and probably lin-can are coming in the unit for controlling HVAC, some camera and other settings, but I dont think they would have used these protocol to communicate between a "media" unit and display/control unit... If I could send LVDS+- signal through the first chip that "open" the unit I could be able to control something. The display is LG and audio unit is mitsubishi by the way if that can help :)

aBUGSworstnightmare
Posts: 1226
Joined: Tue Jun 30, 2015 1:35 pm

Re: Honda Civic 2016 touch screen panel

Mon Oct 08, 2018 7:24 am

E13m3n7 wrote:I just want to learn!
Well, then first lesson for you is to take one step after the other!
Connecting/running some 'unknown' display wtih the PI can be challanging enough. Having a bunch of other 'black box electronics' which needs to be reverse-engineered first, and than - if possible - put into good use with the RPi requires some dedicated skills (in HW engineering as well as SW).

As said, display is a LVDS module, but can have other challanges for you as well (VCOM voltage seems to be generated off-module). Start small, get the display running first, then try to use other components.

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Imperf3kt
Posts: 2028
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Location: Australia

Re: Honda Civic 2016 touch screen panel

Mon Oct 08, 2018 7:48 am

E13m3n7 wrote:
Mon Oct 08, 2018 6:54 am
The head unit that come with this screen is a android phone converted to à car 😂!
While that probably seems funny, did you know the Raspberry Pi is pretty much the same thing. It uses an outdated Android SOC.
Google is ubiquitous - Try it today, it's free!
https://opensource.com/life/16/10/how-ask-technical-questions

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