yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] typos1:
Theres the Ownice RK3188 one and the Newmy NU3001 and its derivatives, also using the RK3188. I used to think that the manufacturers of the units in this thread would swap out the RK3066 bit for an RK3188 at some point, keeping the rest of it the same, seems a natural update, but increasingly, that seems unlikely, I think theyre just going to carry on with the outdated RK3066 chipset. Which is a shame cos most of these Chinese Android headunits are released only partly developed, as the Newsmy and Ownice units prove, meaning that XDA then does a lot of the dev work on the Android side to get them fully working whilst the manufacturers slowly add features and iron out the bugs on the MCU for a year (by which time the Android side is beginning to look a little dated). If the manufacturers of the HuiFei type units DID upgrade the chipset we have an MCU that has been in production for over a year and has lots of bugs ironed out and lots of features working. And if you buy the Newsmy or Ownice youre effectively starting again with a part developed unit, albeit one with lots of power and potential.
[MTCB Android Head Units Q&A] ftsur:
Restoring from TWRP?

I've got the latest TWRP from coudu installed. I was able to make a backup, but I'm unable to restore it. I get an error "unable to mount /sdcard". I tried it in both sdcard slots. I tried to select sdcard under mounting options, but it won't let me check the box. What am I missing here? Any help is greatly appreciated.
[MTCB Android Head Units Q&A] typos1:
There was a post about why some units do this a few pages back, but my KLD has never done it on KGL or KLD firmware. What radio chip does yours have ?
[MTCB Android Head Units Q&A] fadilrosli:
SWC Problem

Hello guys,

My steering wheel control doesn't work when I switch on the headlights. My head unit is a KLD (with malaysk latest firmware and 2.21 MCU) HU and my car is Ssangyong Rexton. Strangely if I set the SWC while I turned on the headlights the same problem happened when ever I switch off the headlights. Anybody having similar problem?
[MTCB Android Head Units Q&A] victormartins:
Hey guys, I just bought one for my Ford Focus at Witson with Android 4.4.4:

http://witson.com/en/displayproduct.html?proID=102176320

One question, I like and prefer to use Google Maps, but when I open Google Maps the music stops playing, anyone can help?

Tks
[MTCB Android Head Units Q&A] Us-Marshal:
Adding experience & notes for KLD 6.95"

I am running the 6.95" (KLD) from Pumpkin and here are details & notes hoping that my experiences can help someone

Model: S07

Vehicle: 2013 Jeep Wrangler Unlimited

Android: 4.4.4_23122014

MCU: MTCB-KLD-V2.20

SWC interface: PAC SWI-CP5 (Pioneer emulation)

ODBII: iSaddle Super Mini Bluetooth OBDIII Adapter

USB Camera: Microsoft VX-5000 **Works with some apps just fine (ex Car Record) error with others (ex. Track Record - when recording). YMMV

Note: Out of the box head unit it was loaded with:

Android: 4.4.4_01122014

MCU: MTCB-KLD-V2.12

I had lots of issues out of the box - Bluetooth issues, Google Play Service errors, random force closing apps, etc. Tried uninstalling/reinstalling Google apps, factory data reset, recovery, etc with little or no improvement. Finally I re-flashed the unit back to 4.4.2 using the 'official' images from previous thread.

Then did the upgrade to 4.4.4 (no root) using official (English) 4.4.4 image and latest MCU (v.2.20).

After flashing/upgrading it's running A LOT better. Every app I have installed works fine. I have Google apps updated with no errors and BT is working well (except for calls - but that is another story).

Notes on Torque/OBDII adapters: The deck is really picky when it comes to BT. I tried 3 with varying degrees of success. They are:

1. Works 100% - iSaddle Super Mini Bluetooth OBDIII Adapter (Amazon)

2. Worked occasionally - Mini Auto Car V1.5 ELM327 (with adapter sold on eBay by sd-cts-store)

3. Never worked - VieCar OBD2 OBDII Bluetooth Super Mini (Amazon)

After a TON of trial and error - I found #1 iSaddle adapter to work 100% - connects fast (even faster if you manually select the protocol to skip the 'automatic' scan) and has not dropped even 1 time.

#2 would pair fine and Torque could see it, but it would rarely (like 2x in 40-50 attempts) connect to the ECU. The adapter paired and worked fine with Torque on my phone so I know it worked and supported the necessary protocols.

#3, VieCar would never even pair with the deck (and yes, I verified the PIN from pairing with my phone), but again this one worked just fine with my phone , but simply would not talk to the deck.

Notes on USB camera for 'Car Record' and Torque 'Track Record' plugin: I am using a MS VX-5000 webcam (stripped of its housing and mounted on back of rear-view mirror). This is working really well and was a super inexpensive add-on that's pretty cool.

In the end of all the flashing, reloading and messing with it, I have a fully functional deck. SWC working just like factory (with long/short press configured), BT OBDII talking to torque, NO Google App/Service errors and NO force closes & front and rear cameras working. Well worth the hassle imo.

My last hope is to get rid of the dreaded echo for callers using BT...
[MTCB Android Head Units Q&A] RaZi3L_:
thanks a lot!!! i was looking for a unit for my hyundai ix35 (tucson) and the best that i found was the witson one here:

http://www.witson.com/en/displayproduct.html?proID=102313422

but with your help i just found that Ownice have one a bit better here ! http://www.ownice.com/Pro_Car dvd player for Hyundai ix35_OL-7703_329.html
[MTCB Android Head Units Q&A] typos1:
Better in the sense that the specs are better, not necessary so much better when it comes to how developed it is . . .

---------- Post added at 05:22 PM ---------- Previous post was at 05:17 PM ----------

Checkout the first page and/or do a thread search to find out how to sort the mic problem out.

You could have saved yourself a lot of bother if youd gone for USB to OBD, its faster, more secure and you dont really need BT for OBD, unless you intend removing your headunit from your car and walking about with it within a 10m radius of the vehicle, which you probably dont.

Still, glad to hear youve got it sorted.
[MTCB Android Head Units Q&A] ftsur:
Let me know if you come up with anything. It's driving me crazy! I was thinking of adding a noise cancelling external mic and disconnecting the internal but after reading it seems like the best route is to wire up a new one all together. I'd really rather not have to do that.
[MTCB Android Head Units Q&A] Us-Marshal:
Agreed - that would have been a lot easier, but the location of the port prevented me from using anything other than a really small adapter and most USB (all of them that I saw) would have stuck out way too far and hit my knee every time I got in/out. So I was kind of stuck with BT.
[MTCB Android Head Units Q&A] typos1:
Read the first page and/or do a thread search, your ll find a solution for your problem.
[MTCB Android Head Units Q&A] Us-Marshal:
Ditto - seems like a bit of a hassle. I wanted to be sure I could sort out the firmware & software issues before going all in and voiding the warranty. Next step is to yank it all back out and heat up the soldering iron, but that wont be for a week or two. I will let you know what happens.
[MTCB Android Head Units Q&A] typos1:
Yes, mines like that and other people have mentioned it, but you can usually sort it as its just the casing.

---------- Post added at 05:45 PM ---------- Previous post was at 05:44 PM ----------

Dont think the warranty is worth much, especially since youd have to pay the postage to China !
[MTCB Android Head Units Q&A] peti007:
These apps can adjust brightness automatically about an Android phone's built in camera instead a real light sensor:

https://play.google.com/store/apps/details?id=com.velis.auto.brightness

https://play.google.com/store/apps/details?id=com.vito.lux

Could you test if it works with your webcam too? This would be a great feature.

I know there is XposedMTC with Screen Filter and others what can adjust by GPS position and time, but these could handle tunnels and underground garages too.
[MTCB Android Head Units Q&A] Us-Marshal:
Actually the guys at Pumpkin were willing to send me a return label to send it back so I would have had zero out-of-pocket, but knowing a replacement unit would likely be loaded/configured exactly the same I opted to grind it out and fix it. Cracking it open would have caused issues if I were to take them up on return/exchange.

Now that it's working I'm not too concerned about voiding the warranty.

---------- Post added at 07:00 PM ---------- Previous post was at 06:51 PM ----------

Brilliant! I was getting all psyched up to write an app that adjusted the brightness according to time of day, but this may work too. I will give it a go and report back, but I have to think that night driving with oncoming traffic (headlights) would give it fits. Here's hoping the devs sorted issues like that out.

On a side note - I did have the 'illumination' wire connected to the dash lights, but the operation was inverted. As my dash got brighter the deck dimmed and as the dash dimmed, the deck go brighter. It also caused annoying flickering if the dash dimmer was not full on or full off. I guess the MCU looks for +12v or 0 and cant really deal with variances.
[MTCB Android Head Units Q&A] comptechltd:
Mine does the exact thing that [MENTION=321419]swanie2000[/MENTION]'s does. The RDS scrolls on the screen and on the button. It would be nice to just save the frequency number to the button and have the RDS scroll on the screen (Although I get a lot of jibberish from the RDS). It has done this with every MCU version.

Steve
[MTCB Android Head Units Q&A] swanie2000:
No, not yet.

I was able to update the JY MCU to V2.16, but I didn't notice any change, other than where it reports the version number on the screen. I have read it may help the radio reception? As of right now, my JY HU is still sitting on my desk with an AC to DC power supply. I do not have an actual antenna plugged into the HU, but rather just a 1/8" stereo male connection extension cord. Not ideal, but seems to work for test purposes. I hope it will work better when it gets installed in my Tahoe and a proper antenna.

Swanie

---------- Post added at 06:22 PM ---------- Previous post was at 06:16 PM ----------

I have a JY model 07?

I am running 4.4.4 KLD firmware

Where do I find the radio chip info? I can check for it when I get home.

Swanie
[MTCB Android Head Units Q&A] Us-Marshal:
4 camera setup

Just another feature I added to the install.

I installed 2 'front facing' (not backup) cameras into the bumpers of my Jeep to provide 'blind spot' views. I built this video signal switcher out of micro relays that take the outputs from the backup cam and the 2 side-view cams. The switcher selects inputs as appropriate and tricks the deck into thinking it's in reverse to show the desired view. For example, when I turn on the left turn signal, the replays go to the left bumper cam and tells the deck we're backing up. POOF - left blind spot on the monitor.

Here's pics of the switcher (being built and installed) and the bumper cam. Don't judge my engineering skills....

1 Backup Cam

2 Blind Spot cams

1 USB web cam (front)
[MTCB Android Head Units Q&A] Netconn:
I'm using this GPS dimmer app: https://play.google.com/store/apps/details?id=com.flaki.automaticdisplaydimmer&hl=en

My KGL HU did the same thing, flickered and didn't really work with the Illumination wire connected.
[MTCB Android Head Units Q&A] agentdr8:
I don't believe the leds in these headunits are dimmable, either via pwm or current limiting.

Very nice idea and implementation!
[MTCB Android Head Units Q&A] the-fabio:
Hi together, how can I edit the APNs, there is no option in the settings.

Thanks!!
[MTCB Android Head Units Q&A] typos1:
What radio chip does your unit have ? Is it the same as swanie2000's ?
[MTCB Android Head Units Q&A] Us-Marshal:
The dimming was for the screen brightness - not the hard-button LEDs. The illumination feed indeed did dim/brighten the screen, but was not working properly. The button LEDs are not really a distraction for me so I have not tried to change them.

Thanks for the props on the cameras.
[MTCB Android Head Units Q&A] typos1:
From the pdf on the first page, actually no, that hasnt been updated, theres info on JY specs online, maybe in the listing you got it from.

Great, Pumkin does seem like a good seller, they sell KGL, KLD and JY types too.

Theres already an app for it, think Car Service can do it, check out the first page or use thread search.

Wow, thats great, you could make 10 and sell em to the guys on here !
[MTCB Android Head Units Q&A] Us-Marshal:
Sweet. Thanks for the tip - I will check it out.

LOL good idea! In the interest of full disclosure, you have to be pretty 'committed' to the install. Telling the switcher what signal to select can be a bit of a trick. Finding/making a +12v constant when you turn on a turn signal can be somewhat tricky. Diode isolating feeds is a must so you don't back-feed +12v into something unintentionally. Clearly it's doable - I'm no electrical engineer, but it can be a bit involved to get it working without making other stuff wonky.

If anyone wants to DIY I can sure share the parts list & schematic (term used loosely in this context). PM me.
[MTCB Android Head Units Q&A] comptechltd:
Mine is a Klyde C0223. It has the TDA 7706 Radio Chip in it.

---------- Post added at 02:35 PM ---------- Previous post was at 02:29 PM ----------

That is NICE looking work. If anyone is interested in a ready made alternative I have installed this in my truck to switch between FRONT and REAR cameras. It will also do a third camera and its pretty cheap.

http://www.amazon.com/gp/product/B00B155G5M/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Steve
[MTCB Android Head Units Q&A] Us-Marshal:
I don't usually have the turn signals on when backing up, but nevertheless relays in series have an inherent 'hierarchy'. The way I have mine wired, the backup camera will always have priority over the blind spots. It would be trivial to change the hierarchy if someone wanted a different result, but that's my preference.
[MTCB Android Head Units Q&A] therafa:
hi all, i´m searching for a head unit for my 2012 suzuki sx4, and after hours of research, i think i´m going to buy this one: ebay 261745377500 .

i´m open to suggestions.. i was thinking on buying an newsmy carpad 2 but don´t want to deal with wires and stuff... this one i think it´s ready for my car...

if anyone knows a better head unit, i´ll be grateful!!
[MTCB Android Head Units Q&A] Us-Marshal:
I t-tapped a feed from a dash light and connected that to the illumination wire on the deck and confined that the voltage on that wire was consistent with the dash - meaning dash lights dim as voltage on that line drops.

Honestly even if the deck dimmed as voltage on that line dropped, it still had a terrible flicking as if the controller could not decide what brightness to select. This was ever present unless the dash lights were on or off - nothing in between.
[MTCB Android Head Units Q&A] Spyder94:
Bluetooth Media Metadata

I've searched and searched and have completely failed to find any helpful info on this issue. I'm running the Google Play Music app on my phone with it connected to my HU through bluetooth. If I run the Bluetooth app on the HU, I can hear the audio and play / pause / skip. But the app doesn't display any metadata anywhere. I've read elsewhere that the Google Play Music app does send metadata when a track changed event occurs. I'm assuming the problem is just that the app, MTCBluetooth.apk, just doesn't retrieve or display that information. I'm more than willing to dive into the code and modify the app to fix this if necessary but some advice on a starting point or links to helpful articles would be fantastic. I'm been in the software development for years but never any Android development. But before going any further down that road, has any else done any research into this issue? Is there a different app I could install on the HU to get this functionality (without losing all the hands free stuff available in the current app)? Does the 4.4.4 KLD firmware even include the full BlueDroid code? (Am I even using the right terms to ask that question?)
[MTCB Android Head Units Q&A] Us-Marshal:
I hope my answer was sufficiently tricky as well ;)

The way I have the relays wired, the backup camera will always 'block' the other signals if its running so even inadvertently activated inputs will simply not have a path out. Only one video signal can be sent out of the switch - so no it cannot overlay two sources.

Think of it like this - the relay connected to the output (that runs to the input on the deck) has 3 legs - input 1, input 2 and output. Output always goes to the deck. Input 1 and input 2 are selectively routed to the output. Input 1 (backup camera) is always routed to the output unless I intentionally switch it off. Input 2 is connected to another relay that switches Left & Right cameras. So in this configuration anything that happens 'downstream' of relay #1 is irrelevant if relay #1 is not providing a signal path to/from relay 2 - even if those cameras are activated..
[MTCB Android Head Units Q&A] agentdr8:
Most likely the AVRCP 1.3+ profile is unavailable on these headunits.
[MTCB Android Head Units Q&A] Spyder94:
Is there anyway to determine if it is available? If it isn't available, is it possible to add it? Would adding it be something as simple as writing an app or would it be something that would need to be compiled into the firmware?
[MTCB Android Head Units Q&A] Flemischguy:
xdaforums.com/android/general/winlink-ownice-android-head-unit-4-4-2-t2899282
[MTCB Android Head Units Q&A] Us-Marshal:
There is an app icon called 'Nav [somthing or other]' that appears to simply be a shortcut to the preferred nav app, but this actually tells the MCU what app you want to have audio priority. I had issued with music/sound until I selected Google Maps. Maybe this helps your issue too?

Also - I am not using stock music player. I'm using Shuttle. Just FYI
[MTCB Android Head Units Q&A] typos1:
Same as mine, which doesnt have that problem. What MCU version are you on ?

---------- Post added at 10:42 PM ---------- Previous post was at 10:37 PM ----------

Everytime I ve used BT music on ANY device I ve found you cant switch between folders, only tracks, so you have to have all your music in one folder and youre limited to MP3 only, so it sounds pants thanks to MP3 being a lossy codec, personally I d never use it unless they change these things, I dunno whether the later BT music protocol that agentdr8 mentioned changes this as well as having metadata, but even if it did I think its the MCU youd have to hack as its that that controls the BT on this device. Is there any reason why you dont just use Google Play Music on the HU ?
[MTCB Android Head Units Q&A] comptechltd:
Currently 2.20 but it was the same on 2.12 and 2.16. I'm using [MENTION=853627]coudu[/MENTION]'s Rooted 4.4.4 from 12/23

Steve
[MTCB Android Head Units Q&A] Spyder94:
I don't have internet access on the HU. No 3G / 4G dongle, and no tethering option on my phone since I have no desire to pay Sprint any more than I already do and I'm just not quite ready to root my phone just to share internet access with my car stereo.
[MTCB Android Head Units Q&A] typos1:
Bizarre, I ve been on many MCU versions and never had that problem, have you tried playing with the radio area settings and maybe even turning RDS off, then on again after a reboot ?

---------- Post added at 11:03 PM ---------- Previous post was at 11:02 PM ----------

You mean youve done other mods as well ? !
[MTCB Android Head Units Q&A] typos1:
I think rooting is your only option if you want those features using your phone TBH.

Theres nothing to be scared of, once you do it your ll never look back, its not illegal, it wont invalidate your warranty and frankly phone companies have a cheek selling you a device thats not rooted anyway, as you do not have complete control over something youve paid 100s for. There effectively scaremonger to put people off being able to fully use their device, imagine if a car company said driving on certain roads would invalidate your warranty ? !!

There are 2 other options if you dont use your phone - get a 3G dongle or a large SD card/USB drive and have all your music with you all the time whether you have internet access or not.

---------- Post added at 11:11 PM ---------- Previous post was at 11:10 PM ----------

No, lol, I meant mods to the ROM other than your install-sh mod ! (but I am tempted to deep Google you now lol).

Edit: think youre coming up multiple times with just a "shallow" google !

BTW can you do KGL 800x400 ?
[MTCB Android Head Units Q&A] typos1:
Right, I d read that, basically your TT maps mod and the work youve been doing on when stuff starts for MTC service.
[MTCB Android Head Units Q&A] TooBusy:
PPP Widget 2 adds a custom network interface by providing a pseudo tunnel interface to the Android. If an app checks for Internet connecting before connecting, it will not see it and most likely it will not connect. Apps that don't check this will simply try and connect. Depending on what you are going to use Internet connection for, PPP Widget 2 might work for you or might not.

I asked a related question in post [url=http://xdaforums.com/showpost.php?p=58411530&postcount=7859]#7859 but no one has answered (yet).
[MTCB Android Head Units Q&A] swanie2000:
I have tried all the radio types available in the firmware

TEF6606/TEF6624

TDA7706

TEF6686

TDA7786

SI4754/SI4755

The only one that works at all is TEF6606/TEF6624. I tried switching the settings, one at a time, with a reboot between each change. None of the other options allow the radio to work at all(no sound).

I only get sound while TEF6606/TEF6624 is selected. While this is selected, I get the radio text scrolling on the buttons, but not until I save the preset. As soon as the preset is saved, the radio text starts scrolling on that button. If you manually tune to a station, the radio text will only be displayed in the center of the screen, and not on the buttons. I get the same behavior with MCU V2.08 & MCU V2.11 as well as MCU V2.16

My radio is a JY 2110 unit

Model # S07

MCU Version MTCB-JY-V2.16

Android Version 4.4.4_13012015

Kernel Version 3.0.36+

Coudu's Rom KLD_4.4.4_800x480_150113_rooted_light_reparted_init.d_v4.2

Swanie
[MTCB Android Head Units Q&A] typos1:
Very strange, comptechltd has a KLD with a TDA7706 radio chip and he has the same problem, but I have the same and dont get the problem, yet you have a JY with a totally different radio chip and you get the problem. AFAIK comptechltd is also using KLD firmware like you, so as thats the only thing youve both got in common I d say that might be the cause of the problem . . until you consider that I dont get it with the KLD firmware on my KLD. Weird. Anyone else got any thoughts ?