yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] dmandn:
I agree, I was meaning more a category for car audio systems, rather than having it all under the android general section. I was also meaning the first post needs to be updated with the issues people have been seeing and the problems related to each version showing clearly which ones are affected by the problem. For eg. KGL units were having issues with speakers blowing, poor reception, and poor mic/mic noise. (I think they were KGL units :P).
[MTCB Android Head Units Q&A] typos1:
Yes, it has been mentioned several times before and some of us have posted in the thread for new catergories/devices for a car stereo section, no-one at XDA seems to have taken any notice, however :(

Pakidermo, the op, doesnt post every often, I m guessing hes just enjoying his unit. I should pm him about up datingthings.-

---------- Post added at 10:48 AM ---------- Previous post was at 10:47 AM ----------

Yeah, it works on my Klyde too, thanks for that :)
[MTCB Android Head Units Q&A] kwalsh24:
Wish my unit has a mute button lol
[MTCB Android Head Units Q&A] Cannois:
The seller send me this video

v.youku.com/v_show/id_XNzY0NDc0OTQw.html
[MTCB Android Head Units Q&A] cadillackid:
Can the Hard buttons on these units(KGL) be remapped?

ie the 'DISC' button be made to say run a music app like Poweramp? I rarely play any discs, would rather it load up a music app instead.

is that something XposedMTC does?

-Christopher
[MTCB Android Head Units Q&A] agentdr8:
Not yet, but it's on my list of things to do.
[MTCB Android Head Units Q&A] dcmouser:
Just wanted to add a +1 to this. Remapping the front keys is the one feature i wish for constantly. It would be wonderful to be able to do it.
[MTCB Android Head Units Q&A] makkan00:
Guys

I had AN-21 U unit but I ordered this thinking that this was superior unit.

Here is what I bought

http://www.aliexpress.com/item/New-...Android-4-2-2-Car-PC-With-DVD/2023206482.html

Now, on arrival I am having these issues

1- Everytime I start the car, system restarts itself. So it shutdown and turn on again.

2- Eveytime I enter into radio or exit radio to go into different application, it gives 'popping sound'. Since I have sub installed, therefore popping sound is very bad.

3- When I come out of navigation application, it loose navigation signals. So if I am travelling, I will have to stay in navigation application, If I come out of it to change the sound track or radio station it looses signals. However at the top bar it shows igo logo.

4- I bought the unit with TV module. TV is not working. Despite of complete installation, it says that signals are too poor.

Sorry to post this but wondering if anybody who bought from the same seller had these issues?

Also if somebody else has these issues, any solution?

It has

MCU version:

MTCB-KGL4-V2.01

Model number: S07

S/N: 000D18A15703

Android Version: 4.2.2_03092014

Kernel Version: 2.0.36+

root@ubuntu #915

Build number: rk30sdk-eng4.2.2 03092014.18:42:29
[MTCB Android Head Units Q&A] hititup:
The best unit

Hello All, I am reading this forum i am up to page 37 and will like to get an universal model of this unit for my lexus is200 ( NO CAN bus ) i had a S100 running firmware S150 4.03 KoTiX_v2.5 with a hardware problem ( no sound from the USB, SD card and NAV) i **** it up yesterday trying to re-flow the processor.

I see there is 3 or more difference model of there unit but want to know which 1 is the best and where to buy from?

Do these unit come with analog TV ?
[MTCB Android Head Units Q&A] SkyBehind:
For popping, turn off sound on keypress. That for rid of the popping sound for me.
[MTCB Android Head Units Q&A] typos1:
Well, I d say Klyde and RoadMaster are the best, due to a few problems that some people have had with KGLs (like burning out speakers bad radio reception, popping noises, bluetooth issues).

Not that Klydes are 100% trouble free (not heard of any problems with RoadMasters but they are less common) but I ve been reading this thread since the beginning and I would avoid KGLs and GSs because of what I ve read about them.

Having said that quite a few regular posters have KGLs and GSs that have no problems, so carry on reading the thread to form your own opinions, maybe do a search for "best unit?" in the thread search box to the right to see what others say ?
[MTCB Android Head Units Q&A] bom-desolation:
Can anyone recommend a UK/DE/NL based reseller for a RoadMaster unit?

Import would be ok as well, but it's quite hard to find them so it seems.

We have a BMW E90 with automatic airco and since our Dynavin broke I want to replace it with something modern.
[MTCB Android Head Units Q&A] Blaze Falconburger:
Track Forward/Back Buttons Play Bluetooth

Weird one - I have noticed when I am playing mp3 files in PowerAmp (not sure if it is limited to this), when I press track fwd/back using the physical buttons it starts playing bluetooth stereo on my phone which is connected to bluetooth. Pressing Fwd skips to the next mp3 track and keeps playing but at the same time skips to the next bluetooth track and keeps playing over bluetooth, so both outputs are going through the head unit at once, very strange. I have to keep stopping the track playing on my phone everytime I skip an mp3 track.

Apart from disabling buetooth stero on my phone which I don't ideally want to do, is there anything else I can do?

Thanks
[MTCB Android Head Units Q&A] coppertop2000:
My wifi stopped working for no apparent reason. It actually connects fine, but the full bars icon is grey and not blue.

Had anyone else had this issue?

I didn't change anything... Worked one drive... Didn't the next.

Thanks,
[MTCB Android Head Units Q&A] heimleiter:
Someone have a gs unit with the new 2.02 running and good Quality on the handsfree?
[MTCB Android Head Units Q&A] makkan00:
Thanks.

It did not work on my car.
[MTCB Android Head Units Q&A] cadillackid:
the connected but gray issue means the device has no access to the internet..(well to google anyway) you may want to check whatever it is connecting to.. if you are using a hotspot or personal hotspot from your phone etc, perhaps reset that...

if your browser and internet services still work but the bars are gray its simply just that it cant see google's servers and thats no biggie...

-Christopher
[MTCB Android Head Units Q&A] agentdr8:
I have yet to put the 2.02 MCU update on my GS, but I'm planning on it this week. I have already separated the mics out thanks to Nir's post, and am using an external Parrot mic but still get somewhat crappy handsfree (per my gf on the other end). Hoping the firmware update improves it.
[MTCB Android Head Units Q&A] SkyBehind:
I installed 2.02 on my gs. It wasn't good. Mic was worse and I could hear a slight whisper coming from the speakers even with volume all the way down. I tried it with kgl firmware and it was the same, leading me to believe it's the MCU. Went back to 1.91 MCU with kgl 2.03
[MTCB Android Head Units Q&A] coppertop2000:
Thanks for the info. I'll play around with it and try to connect another device to my phone's hotspot to see if they work. I'll post back with any updates
[MTCB Android Head Units Q&A] liquidini:
I made a quick search in this thread but cant find an answer.

does usb dac works with this unit?

I have an alfa romeo giulietta with bose amp that needs rca or better headphone jack without 4v like the rcas.

I read that usb dac work but have some problem with the volume sliders?

[MENTION=309187]edit[/MENTION]: are unicode characters supported in the phone name look up?greek lets say?
[MTCB Android Head Units Q&A] makkan00:
Has anybody bought this unit with external digital TV?

If yes, can you kindly confirm

-your country

-If tv is working

-Did you require any special methods to work?

I have bought HuiFei from here

http://www.aliexpress.com/item/New-...Android-4-2-2-Car-PC-With-DVD/2023206482.html

and associated TV module

http://www.aliexpress.com/item/AiRo...Box-Tuners-for-Pure-Android-4/2033316321.html

But they it does not work. It just say signals are too week and I have tried two different antennas. One is passive which came with tv module. And other is active with amplifier to get the signals and require +ve and -ve wires connected.

Both are non working.

Any suggestion?

PS: I am in UK.
[MTCB Android Head Units Q&A] dnts:
Strange that your mic quality is not as good as it should be.. are you sure you removed the component labeled "C34" near the BT module?

The MCU configures the BT module, which in turn has control over mic quality in handsfree so MCU versions might have some impact. All my friends (and my wife) stopped complaining about audio quality since I've made the modifications.
[MTCB Android Head Units Q&A] Reptile-X:
I got same TV-Box with VW specific Huifei and it was working with the antenna which was delivered with it. But to get more signal in the Car I used amplified antenna, check my post here, there is also a video showing the TV working:

http://xdaforums.com/showpost.php?p=55367835&postcount=3420
[MTCB Android Head Units Q&A] makkan00:
So in Netherland it worked. But not in UK.

What other amplified antenna did you buy?

This is my amplified antenna

http://www.aliexpress.com/snapshot/6236839975.html

which seems very similar to yours.
[MTCB Android Head Units Q&A] Reptile-X:
A cheap one :laugh:

http://www.ebay.nl/itm/171315455414

The one I got was even cheaper but same antenna, couldn't find it now.
[MTCB Android Head Units Q&A] Timitri:
Maybe someone is asked this before but... I found that deezer is good way to me get music to car. Is it possible to get it work with steering wheel buttons (next and previous song). And is deezer possible to put launch from mode button? Thanks :)

Edit: sorry , found from first post :rolleyes:
[MTCB Android Head Units Q&A] makkan00:
Mine is very similar to your one.

I tried with both antenna but no luck.

I have tried to change the country to England and scanned. Zero channels with both antenna.

Then I went into settings and check signal strength. That is zero as well so it gives indication that aerial part of TV module is faulty.

Opened the box and it seems absolutely fine and wire is connected to the chip.

Dont know whats wrong :confused:
[MTCB Android Head Units Q&A] NicolasGomez:
Finally got mine in yesterday. Plugged it into the test bench.

Works amazingly fast - spiffy even.

Its a KDL unit, version 2.02. FW dated august 2014.

The button colors are RGB.

Bought from Pumpkin (via their website, not aliexpress). http://www.autopumpkin.com/new-prod...-wifi-odb2-dvr-button-light-color-adjust.html

Came with external mic, remote control and even ipod (old 30 pin) connection cable.

Ill post pictures later if anyone is interested.
[MTCB Android Head Units Q&A] Reptile-X:
Makkan00, there are 2 different TV-Box’s are you sure you got the right one? There is one for US which wont work in UK:
[MTCB Android Head Units Q&A] makkan00:
Not sure, but seller knew that I am in UK.

He sent me the box which has DTV4 ticked on the label.

I think its to do with signals and signals are showing zero.

What does you label says?
[MTCB Android Head Units Q&A] Reptile-X:
Mine wasn’t ticked with anything but we have DVB-T here in Netherlands, and I asked specially for DVB-T.

Here a picture of my box, took it before I installed it:

It looks like UK use also DVB-T

http://en.wikipedia.org/wiki/List_of_digital_terrestrial_television_channels_(UK)
[MTCB Android Head Units Q&A] makkan00:
Interesting my friend.

Well its similar across the Europe. So DTV should work for me.

Thanks for your help.

I guess I will have to wait till seller gets back to me. I am having so many issues with my unit and I just wonder why did I upgrade?

AN-1 was perfect!

---------- Post added at 09:35 PM ---------- Previous post was at 09:27 PM ----------

http://en.wikipedia.org/wiki/File:Digital_broadcast_standards.svg

Yes my friend. I think my tv box is busted.
[MTCB Android Head Units Q&A] liquidini:
can you check the link again? i also want to take the rgb version :)
[MTCB Android Head Units Q&A] Reptile-X:
God luck with your unit and TV box, I am one of those with a good unit, no complains here. Only upgrading firmware was bit hard to accomplish but it is working now, I have probably one of the first units, it is weird but with most China build stuff the first generations are a lot better build than the later builds :eek:

That’s why I am busy with perfecting the unit for my needs with the apps I want lately, I feel almost guilty posting these stuff while people struggle with their units hardware.
[MTCB Android Head Units Q&A] makkan00:
No, I guess its good to see the progress of other fellow members.

Mine is giving me these issues.

1- Each time when I start the car, it does reboot. It switches off and on.

http://youtu.be/jsiGHB5SwxA

2- Each time I go to radio or get out of radio, it pops.

http://youtu.be/mk0XYO8n6FA

3- When I get out of navigation application, it looses GPS signals. So to use nav, you cannot use other application.

See video at 22 second in problem 2.

4- TV is not working as mentioned earlier.

5- Sub output has distortion. My sub is rattling even when the volume is on zero.

Also, I failed to notice that this unit did not come with remote. Not that I will miss it, but sometime kids at the back like to have control on the unit.

I am truly disappointed :(
[MTCB Android Head Units Q&A] cadillackid:
I dont have DTV on my unit but so far my KGL unit has not had any hardware issues at all..

the small issue with the dimmer is because my car appears to send a PWM signal out for the dimmer instead of just a lowered voltage, but thats Ok as I like the screen bright anyway..

otherwise my Wifi works good, my AM-FM radio reception seems as good if not better than the factory radio was. . I do have a real antenna and not just a glass antenna on this car so that may make a difference..

I just got my unit very recently.. perhaps its just a hit or miss thing with good and bad units??

then again since my car isnt very common and my unit was made special for the car I may have gotten a first gen hardware (already made long ago)..

-Christopher
[MTCB Android Head Units Q&A] makkan00:
Where do I find latest

- MCU versions

- Firmware versions

One on page one seems very old.
[MTCB Android Head Units Q&A] agentdr8:
Yep, removed C32 (the only component inline with MIC+ on the main PCB). The quality isn't horrible, but I apparently sound distant, like I'm 20ft from the microphone. And apparently getting physically closer to it and yelling still don't make it sound like I'm any closer to it, if that makes any sense.
[MTCB Android Head Units Q&A] Reptile-X:
For the first problem, I don’t know if anyone mentioned but did you try to switch the positions of red and yellow (or orange in some units) wire?

For third problem, I did try Navigon at start but it didn’t work, I am using TomTom without any issues, you might try to use TomTom or Sygic and see what happens? I never used the Igo which came with the unit, even before installing the unit in the car I put TomTom on it.

Fifth problem, did you try to use ground loop isolator just on the sub?

My kid is 18, so he is not interested in remote, but I can understand why it is important for you guys with kids.
[MTCB Android Head Units Q&A] NicolasGomez:
Oh, it doesnt work. I wonder if they dont have this version anymore. Ill email them and ask.

I found this one on their site http://www.autopumpkin.com/car-dvd-...ch-screen-3g-wifi-bluetooth-support-obd2.html looks identical, and by the model number is a KDL too. It comes with the ISO->Nissan cable harness.

But mine was $389 (with camera)

---------- Post added at 09:27 PM ---------- Previous post was at 09:22 PM ----------

Was this for XposedMTC ?

Any chance I could have a look?
[MTCB Android Head Units Q&A] agentdr8:
It was for Poweramp Toast. But if you'd like to look at XMTC, send me a PM with an email and I'll forward you an invite.
[MTCB Android Head Units Q&A] liquidini:
isn't free on xposed framework download page?
[MTCB Android Head Units Q&A] kwalsh24:
Soooo interesting issue just happened, turned my car on, radio illuminates, sound comes bit no screen displayed :( anyone else have this issue in the past?
[MTCB Android Head Units Q&A] SkyBehind:
What unit, what MCU, what firmware? I had the same, at first I thought it was xposedmtc, but then I think it was the new MCU, which specifically was 2.02 for the GS
[MTCB Android Head Units Q&A] kwalsh24:
I'm on 2.02 gs firmware 1.99hf mcu. I've disabled the auto dim to see if that helps
[MTCB Android Head Units Q&A] typos1:
People have installed the Klyde firmware on KGLs and GSs (NOT the MCU though) and said it improves reception/quality, try that ?

Try searching "spdif" "digital out" or "digital amp" in the thread search box - it has been mentioned before, somone wrote some code that enabled digital out via usb or something, that they then connected to a digital amp, which presumably had its own built in DAC (cos we dont hear digitally, all digital stuff has to have a DAC)

I ve got an Alfa with Bose and I knew it needed at least 4V pre-outs, these units have 3V pre-outs, I got one anyway and its still pretty loud, I can just about stand it at full volume when stationary, it might not be loud enough at 80mph+, but not tried it at that speed yet.

I did install power amp, though and that can tweak the master volume on the Android side, that makes it much much louder (and better sound quality), the only down side is that there is no fader control, only left and right. Viperaudio is even better apparently.

As I said a few days ago when someone else mentioned it, in the UK you arent going to get a signal if the car is moving unless you get a diversity/dual tuner tv box. DVB-T is not designed for mobile reception so mobile tv with a single antenna is pretty much useless.

Diversity boxes take signal inputs from 2 antennas and make a good signal from the two and that is the way to go if you want mobile tv, I cant speak for other countries, maybe the signal there is stronger, but here in the UK, I know from experience its just not gonna work - I ve tried a few DVB-T boxes and the plastic aerials they come with dont work at all - your ll get no signal without a booster (even inside the house). I got one with a 19db booster and it was mostly fine when stationary, but the signal keeps cutting out when driving. I doubled up and wired two 19db boosted antennas into one, but it made no difference.

You could try one of these 96db ones for 20 quid from ebay:

http://www.ebay.co.uk/itm/190697167225?_trksid=p2060778.m1438.l2649&ssPageName=STRK:MEBIDX:IT

they also do a 129db one for 80 quid and they claim it makes a huge difference, I was going to try the 96db one, but did some research and I m pretty convinced now that a diversity box is the way to get a good picture (and audio, I intend to use it for digital radio too).

I ordered my Klyde with a built in diversity one, but they fitted a single tuner one instead, (doh), theyre sending a diversity one, so I ll post here how good it is when I get it.
[MTCB Android Head Units Q&A] agentdr8:
If you're using XposedMTC 1.2.8a, try changing the dimming value to >=5. The default lowest value was 10, but I was testing values lower than that to see if I could blank the screen. On my GS, even a value of 0 doesn't blank the screen, but it seems on some of the units it actually does turn off the backlight.
[MTCB Android Head Units Q&A] ptclabs:
Microphone problem

I am talking with Klyde now trying to get them to separate the microphones at the factory while being produced. Also about using some shielded cable. If anyone can get me better pics/instructions for their engineers or a video please do.

edit they are willing to fix it before shipping. everything is semi clear except what pathway to cut. I was thinking wouldnt the best way to fix this would be a stereo headjack going with a stereo microphone left channel going one right going the other? Then mr android should hear ok also.

if you are trying to blank the screen just lock it. pushing volume button turns it back on. Works on GS ok

http://www.ebay.co.uk/itm/EXTERNAL-...=UK_Computing_Microphones&hash=item41530de4f7
[MTCB Android Head Units Q&A] SkyBehind:
You mean 2.02 MCU and 1.99 HF firmware? Or did you have it correct?
[MTCB Android Head Units Q&A] makkan00:
I had ISO harness and it was all plug and play. Though I will have to butcher the wires now and switch them for no 1.

For third, I will have to search Tomtom or Sygic to see what happens.

For fifth problem, do means ground loop isolator which goes b/w the power and earth wires of radio?

Thanks.

---------- Post added at 02:35 AM ---------- Previous post was at 02:28 AM ----------

Thanks for contributing. you are very much right in saying that as I have a beamer and in that car dual diversity antenna does work. My understanding was that one was analogue and one was for digital but I might be wrong.

Now coming back to current situation, my problem is:

1- I get no signal when I am stationary.

2- I already bought amplified antenna before buying the unit as I wanted sometime on windscreen. Its 20db boosted active amplifier antenna. Still no luck when the car is stationary.

I have seen few tv modules on aliexpress with dual antennas but not sure if they are any good?
[MTCB Android Head Units Q&A] kwalsh24:
Ill give this a try, as I did have it at zero lol. And yes, I'm running GS firmware with HF mcu, as its a HF unit.
[MTCB Android Head Units Q&A] SkyBehind:
I didn't think the gs 2.02 worked as well as previous versions. I had the same dimming issue. Next morning it was fine and I changed firmware and MCU while I could see the screen :D
[MTCB Android Head Units Q&A] kwalsh24:
I hadn't had any issues with it till current, so I wonder if the 0 dimmer setting was causing the issue
[MTCB Android Head Units Q&A] ptclabs:
GS insides

Just took apart my GS

here are the pics

Looks like the kgl more or less. android shoved in the screen. Only thing inside is a MCU board / radio /bt module

no fan

https://drive.google.com/folderview?id=0B48SQ7CItSxsNENBZU53N2RVM0E&usp=sharing

just clipped the internal microphone wires. much much better

you do not even have to remove the warranty seal just the 4 faceplate bolts

GS seems more organized and simplified than the others. They also took steps to get a little better microphone with running tp wires. It still sucked compared to the 1$ external I am using on it now.

Does anyone have the link to disconnecting the KGL front microphone? this thread is getting so big stuff is hard to find now even with search. My wife wants hers done now.... it should be on the first page. GS just cut the wires.
[MTCB Android Head Units Q&A] kaliif1234:
how to check CAN bus interface.

I dont have can signals in dashboard. So i took from OBD connector (PIN 6&14) CAN HI & CAN LO signals to can interface.

But this interface did nothing. How to check this interface. Does anyone have can interface pinout to check my wiring. My unit come with quadlock connector but my car have 2 8pin ISO connctors.

In factory settings CAN is set to VW-SKODA.

Car is VW T5, Caravelle 2009. Radio is WITSON W2-A7503 upgraded to latest MCU&FW 2.03.

Torque is working with bluetooth adapter and it shows data on screen.

---------- Post added at 08:09 AM ---------- Previous post was at 08:03 AM ----------

might be worth a try, in russian forum.

radio sound improvements

4pda.ru/forum/index.php?showtopic=557670&st=1980#entry33091268
[MTCB Android Head Units Q&A] harlequin69:
Is any of this useful to people looking to make ROMs for our headunit?

http://www.cnx-software.com/2012/11/04/rockchip-rk3066-rk30xx-processor-documentation-source-code-and-tools/
[MTCB Android Head Units Q&A] lamjanus:
What`s the problem with the internal mic? I have a Erisin (KGL) unit and when i`m making a phonecall the other site can hear me fine but with a bit of echo and reverb. In the end fine for making quick calls