Audi TT Forum banner
Cancel
Create thread New Garage Forums

AUDI TT MK2 CARPC - Updated to Android Auto - 2020

1 reading
Jump to Latest
64K views 377 replies 47 participants last post by  Hadaak  
#1 ·
Hi Guys,

I'm starting a TT MK2 CARPC Project. Your help is appreciated.
The TT has been ordered and will be delivered in about 4 months.
I have ordered the Concert Unit so as to have the 9 speakers installed.
I didn't go for the Bose as I heard it was not a good choice.

The CarPC will be installed in the trunk.
Software of choice is CentraFuse which I have tested on a VM. Looks and feels nice, even connectes to my Iphone :mrgreen:

More détails comming soon.

Cheers !
 
#3 ·
Let's start gathering the pieces :

first the Monitor; I found this one :
CTF700-HM - VGA 7" TFT - Touchscreen USB - OPEN-FRAME (600nits , TMR-Technology)

http://www.cartft.com/catalog/il/894

View attachment 1



I don't know if it's possible to install an 8 inches in the TT.
 
#4 ·
I think the main issue will be getting a mould for the Screen to fit it. the TT has a lovely curve on the dash where the radio sit's, so you will want to make sure the Fascia for the screen follows the line's. I think Ikon66 might be useful to PM as he has had an aftermarket unit fitted ( not CarPC but usual SatNav) so he might be able to advise you :)
 
#7 ·
You can pop out the cover the existing bezel in a release agent, and then make a mold of it and create a custom bezel out of reinforced resin. That way you can modify the mold to accommodate the new screen into your design. Thats the route i'd go if your feeling crafty.
 
V
#8 ·
JKM Entertainment are apparently creating a CarPC design (boot install I think) and manufacturing their own components, including the LCD display! They tell me the cost will be kept around 700-800 quid.

I got my G4 through them and was given this update toward the back end of last year. I'll get an update from them again and post here when I know more.
 
#9 ·
Save
Reply Quote Like Like
#10 ·
I appreciate your efforts mate, but wouldn't it be easier and more flexible to buy a netbook and lock it in the glove box :? The screen is probably bigger anyway, then concoct a lead to plug into the iPOD or CD changer, thus utilising the car's audio system. :wink:

Sonatina
 
Save
Reply Quote Like Like
#11 ·
I must be missing the point here but for the life of me I can't work out why you would want a PC in your car. Almost everything useful I do on a PC requires internet connectivity (email, shopping, the TT Forum :) ) and you won't have this in a car unless you park outside a building with public access. Like Sonatina said, doesn't a Netbook in the glovebox achieve the same think a lot simpler and cheaper. You can also take it with you when you leave the car.

Good luck with your project but please enlighten me - top ten uses for a car PC?
 
#12 ·
Hi Guys,

Thanks for the interest in this project :)
Well the top ten reasons is only one reason : CONTROL over car-entertainement :wink:
I don't want to have an audi piece for 2500+ € and wouldn't know what to do with it when it goes crazy or when you need a new functionality. you know what you can do with a PC.
Of course you can do internet with a 3G card and you can have TV + all the GPS software on the market, let alone Divx, HD movies, Music... !!! And it is Touchscreen :p
There is a great forum on the mp3car.com.
 
#13 ·
Now for my next question:

i have never installed a car audio system and would like to know how to pass wires from the central console to the boot where the computer will be installed. My TT is due on week 29 so I'm getting ready :wink:
Any ideas or pics would be appreciated.
 
#14 ·
Any advices as to the choice of an amplifier. I would like to have 5.1 surround :mrgreen:
I have the Concert Unit, 9 speakers.
 
#16 ·
I don't know what the bose system is compsed of. All I wanted were the 9 speakers so I can connect my carpc through an amplifier.
 
#17 ·
I need info on the 9 speakers config sold with the Concert Unit.
I have to get an amplifier to use with the carpc and would like to know which kind of amplifier is needed.
any info on other compoments/adaptors needed for this kind of operation is wlecome.
i'm taking the concert unit out of course.
 
#18 ·
OK Guys, Been enjoying the TT fro almost 4 weeks now :)
I'm going into serious work here. I have to get this CarPC working as soon as possible :p
I already took apart the left part of the trunk to take a look at the J525 DSP Unit (5 channel amp). Wiring is of course Audi specific. The Unit is a tiny thing, a real shame !!! I know now why my Concert II system sucks ! But I'm going to use it with my CarPC for the moment and may be get another amp later.
The good thing is that the amp and the battery are in the trunk and the wiring is already done.
I'm removing the Concert Unit of course and replacinf it with a touchscreen. So the only wiring is for the screen.
Now i have to hack the J525 to connect it to a PC. Your help is appreciated here.
the carpc audi is of cource a sound card and the J525 is a 5 channel amp according to the inscription on the unit.
Looks like I'm thinking aloud here, guys, so feel free to comment !

I suppose I won't need to touch the wiring behind theConcert Unit.
I just have to wire the SoundCard to the J525 unit on the correct input/output connections and the Sound should be ready to go.
If anybody is against this speak out please [smiley=argue.gif]

Digital Sound Package control unit -J525, standard (UDS)

38-pin connector

01 - Earth (terminal 31)
02 - Battery + (terminal 30)
03 - Vacant
04 - Bass speaker front right -R23 and treble speaker front right -R22 (+)
05 - Bass speaker front left -R21 and treble speaker front left -R20 (+)
06 - Vacant
07 - Mid-range/bass speaker rear right -R160 and treble speaker rear right -R16 (-)
08 - Mid-range/bass speaker rear left -R159 and treble speaker rear left -R14 (+)
09 - Vacant
10 - Centre mid-range/treble speaker -R158 (-)
11 - Vacant
12 - Vacant
13 - Vacant
14 - Vacant
15 - Vacant
16 - Bass speaker front right -R23 and treble speaker front right -R22 (-)
17 - Bass speaker front left -R21 and treble speaker front left -R20 (-)
18 - Vacant
19 - Mid-range/bass speaker rear right -R160 and treble speaker rear right -R16 (+)
20 - Mid-range/bass speaker rear left -R159 and treble speaker rear left -R14 (-)
21 - Vacant
22 - Centre mid-range/treble speaker -R158 (+)
23 - CAN wire Low
24 - Vacant
25 - Vacant
26 - Vacant
27 - Audio input rear left (-) *)
28 - Audio input rear right (-) *)
29 - Audio input front left (-) *)
30 - Audio input front right (-) *)
31 - CAN wire High
32 - Vacant
33 - Vacant
34 - Switching wire of radio -R
35 - Audio input rear left (+)
36 - Audio input rear right (+)
37 - Audio input front left (+)
38 - Audio input front right (+)

*) One earth wire from the radio for the 4 audio inputs of the amplifier
 
#19 ·
I'll be testing with a laptop in the boot first this weekend so you have till saturday to comment and amend. I only hope that the J525 Unit will accept the wire hacking thing and will function without the head unit.
 
#20 ·
Might be helpful:

http://www.audi-portal.com/en/diagnostic/ecu_12457.html#1

General system description, standard sound system

The standard digital surround sound system uses 5 audio channels. A total of 9 speakers are connected to the digital sound package control unit -J525. In the dash panel are the centre mid-range/treble speaker -R158 and the two treble speakers R20 and R22. These two treble speakers are connected in parallel to the bass speakers R21 and R23 located in the front doors. Behind the rear side trim are the treble speakers R14 and R16, connected in parallel to the mid-range/bass speakers R159 and R160.

By way of the coding, the sound system settings must be adapted to the vehicle's equipment specification.

The Digital Sound Package control unit -J525 is switched on by a switching voltage from the radio -R.

Diagnosis is carried out between the data bus diagnostic interface -J533 (gateway) and the Digital Sound Package control unit -J525 over the infotainment CAN data bus. Over CAN the sound system receives information such as the road speed signal.
 
#21 ·
Any Audi tech around ?
i would like to know if the J52 Unit is a real amp or just a crossover?
I connected my laptop audio to the input connections on this unit and didn't get any sound !!!
Will I have to gut the unit and install and aftermarket amp???
 
#23 ·
Hadaak said:
Good news guys ! I managed to get sound from my laptop through the j525 unit.
Click to expand...
Oooh, that sounds promising, tell us how you did it :) I suppose you need to activate the remote switch on for the j525?

This carpc idea really interests me. Looking around at most double-din units, they seem to do the job okay but the satnav is usually the limiting factor for me. At least with the carpc you can use your favourite satnav soaftware and update it when newer/better releases are made available or a new product comes to market. :)

Time to start reading up on the web

Josh
 
Save
Reply Quote Like Like
#24 ·
I tapped into the input pins out of the Concert II+ unit while the concert unit is still powered and feeding the J525 unit. I get sound on the speakers. Good sound, not as loud as the COncert unit but that's another story.
Today I took apart the trunk and tried to get some switched power line on the rght side but couldn't find one. I found an empty box big enough to receive a CarPC :mrgreen: Looks like the TT was prepared by Audi to be CarPced :twisted:
I'm ordering an 8 inches touchscreen tomorrow from cartft + additional carpc components. I just need to see if I can plug to a switched line thah's already used bu another electronic unit in the car !!!! Otherwise I'll have to get one from the drivers side fuse box.... As for the J525 powering I'll see if I can connect the switched pin on the concert switched pin.

To be continued....
 
#25 ·
Update:

Just ordered the motherboard, the screen and the Power supply from http://www.cartft.com:

M2-ATX 6-24V DC/DC (160 Watt)
CTF800 V3 - VGA 8" TFT - Touchscreen USB - PAL/NTSC - IR - Audio
Intel D945GCLF2D (mit integrierter Atom 2x 1.6Ghz CPU) *neu*

still to come:

2GB Of RAM
Wiring cables and jacks
USB Gps Module
FM receiver
TV receiver
Software (Windows 7 is already here :mrgreen: )

CarPC will be sitting in the empty box (possibly the parking aid control box) in the right luggage compartiment:

Image
 
#26 ·
The Digital Sound Package control unit -J525, standard (UDS) (38 Pin Connector) Is sitting on the left side in the luggage compartment:

Image
 
Audi TT Forum
posts
3.7M
members
90K
Since
2002
A forum community dedicated to Audi TT owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
TT Forum - Mk1 TT (8N) TT Forum - Mk2 TT (8J) Off Topic eBay TT Parts & Accessories TT Events