yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] kaween:
It's a question of eyesight. :)

No, seriously. Your question is valid.

I'll try to answer : The metal part of these/all 2din units is 178x100 approx. That is a given.

Now look at the top picture of the unit (the slightly angled picture right under the Joying logo on the site he mentions).

You can see the metal back of the unit. But you can also clearly see the black border sticking out _quite some bit_ in regards to the "diagnoal topline" of the metal body -left top corner-.

NO way that difference is "only 2 mm". It looks to be substantially more. Now look at the dimension stated in the lower part of the ad : they state 178x100 on the front, then show the rear where it SEEMS that the front is COMPLETLY FLUSH with the metal part. Not possible : this is clearly NOT a picture of THAT unit's "back view", as it doesn't correspond with the first image I've refered to.

This may sound like total nitpicking to you.

But the reason why I ask : I've been burned with such a type of unit before (Zhoon, AN21 based, 7 inch).

The seller kept insisting the unit was "really 180x100", but after arrival the plastic bezel turned out to be 187x105.

Let me tell you : that might not sound that bad, but in some cars this means completly ruining the dashboard. So I've become very careful when it comes to sellers stating these values, as either they don't understand the question or -more likely- are only interested in selling the unit no matter what.

Hence I'm asking someone that really has such a unit, seems the best way to prevent pre-programmed missery. :laugh:

By the way, I totally enjoyed your little "nearly having a fit" thing about Antenna amps and power injectors for existing antenna amps. Not looking to throw oil on the fire, but I just wanted to add this : there ARE "real" antenna amps too for existing non-amped antenna's. These do NOT look like these tubular thingies which only exist to feed the "fanthom power" to the existing amp in the antenna, nor are they made up only out of 3 or 4 passive components (an RC circuit, or RLC circuit depening on the design), but they have a "real broad band signal amp ect ect" ... and quite some extra electronics.

I've toyed with them, but I can't recommend them. The reason is simple : these amplifiers amplify EVERTHING. Noise ? Intereference ? Yep. I've had one of these things that tried to boost the signal so much that when you tried to auto-tune your car radio, it would find 100's of "radio stations". All strong. All static.

Not saying there aren't any real, good working radio antenna amps for standard stock non-amp'ed antenna's, but so far I've not found any.
[MTCB Android Head Units Q&A] 4stimpy:
Excuse me for asking, you wise ass.

I think that i am one of the few who has read more than 400 pages so far starting from page 1.

I am still reading pages every day, spending hour after hour at the board.

Also did multiple searches, i just could not find an answer(maybe i am to stupid)

I am a long time member with few posts, i wonder why, it is probably because i ask everything and don't bother to search my self.

I did come across lots off your reply s.

It would sometimes be easier to help in stead of telling someone what you think they are doing wrong.

Do you use a wide angle front cam? you don't have to tell me which one, i don't even want to know.
[MTCB Android Head Units Q&A] typos1:
I dont use a cam, at least not yet, but I have read all 1102 pages of this thread and the subject has come up numerous times, so in order to help you I would have to spend time using the thread search function to search for the posts that I remember reading about dash cams and which are best, since I am not going to waste my time searching for the answer for you, when you can do it yourself, I helped you out by informing you that the subject has definitely been mentioned, but that you will have to use the search function to find it, although I ve been reading and following the thread since day 1, I do not have a photographic memory and I cannot remember the exact post number and every post and its subject . I m currently searching the thread for something I remember reading about a few months back, thats the way it is with this thread, its what you gotta do if you want the info, you cant expect others do do your searching for you and a hell of a lot of people on here expect it, so the same questions get asked over and over and over and over and over and over again, cos no one can be bothered read the first page or thread search, they want the regulars to sit there and do it for them and it gets very annoying, I m not the only one to get p*ssed off with it either.
[MTCB Android Head Units Q&A] staneb:
I had the same issue with my Vgate on my HU. What resolved the issue was installing an older version of XposedMTC (I think it was version 1.3) where pairing worked with no problems. I had to use a version which allowed to pair all devices as OBD, with no OBD adapter name string input. After successful pairing I updated xposedmtc to latest version.

BTW, I also have a Mazda which of course is just a coincidence and doesn't mean it's the reason for not pairing ;)
[MTCB Android Head Units Q&A] typos1:
Yes, I remember your problem from the AN21-U thread I think, I remember it being established in that thread, that there are 2 double din sizes, 178x100 and another, slightly larger I think.

As for the bezel, well thats an entirely different matter and it depends on the unit. I totally didnt get that you meant the black plastic front, even though you actually said it !! lol DOH !! Stupid me.
[MTCB Android Head Units Q&A] DjCalvin:
Awesome. Will report back tonight when I can play with it some more! Gen 2 speed by chance?

- Sent from Spaaaaaaaaace
[MTCB Android Head Units Q&A] 4stimpy:
I just searched again for dashcam and dash cam, no answers to my solution.

You may think so in a large thread as this one, but not everything is covered yet.

Believe me, i do thorough search and reading before i even dare to ask something, because i hate asking.(and some people make that worse)
[MTCB Android Head Units Q&A] typos1:
Well I m not gonna search it for you cos I searching for myself ATM. But are "dash cam" and dashcam" the only words youve bothered to search ? You cant think of any other words that may be relevant ? Really ? ? ?
[MTCB Android Head Units Q&A] kaween:
No problem my friend and indeed, your memory serves you well as I'm what you could call "the AN21 guy". :)

The issue is indeed that "din" only relates to the "cage" where the unit is shoved into. The Bezel itself maybe "true din" (180x100), oversized (which seems to cover anything well over 191x105) and narrow (sticking out only 172x95) - and of course all the various model specific versions, but I'm not including those as by default, "they should always fit no matter what".

On most cars, there are viable solutions to this, though not always cheap or elegant ones.

But if you're not working on your OWN car -like in this case- or are very unlucky in terms of dashboard layout with buttons right under/next to the radio space, having to magically gain nearly 2 centimeters of space can turn into a "mission impossible" at an alarming rate. :eek: Trust me. Been there. Not funny.

Especially if you've tried to make it very clear to your seller what you're trying to say, with pictures and drawings and whatever. :rolleyes:

Now I just hope and wait I can get some kind of answer of the owner of one of these units.
[MTCB Android Head Units Q&A] typos1:
I am aware there are actual antenna amplifiers as well as the cylindrical power injectors and I ve mentioned this numerous times as well, youve obviously not read those posts ! :)

The cylindrical power injectors also contain a static filter, I m guessing the real booster you bought was not a good one and did not contain a static filter, but you cant therefore assume just cos you bought one example that all real boosters do not work, some do.

---------- Post added at 11:08 PM ---------- Previous post was at 11:06 PM ----------

I was following the AN21-U thread for ages before this one.

What car have you got ?
[MTCB Android Head Units Q&A] agentdr8:
Interesting. Maybe I'll revert that change or just put another option in to pair all devices again. There were issues with people's BT-connected phones showing up as OBD/serial devices when I had the option to override everything, which is why I put in the filter. It should work, as it's using the exact same code as the stock MTCManager does to determine if a device is allowed to pair as an OBD adapter, but I guess it needs more testing.
[MTCB Android Head Units Q&A] DJCannonball:
oh my god.. chill down man before you explode.

i did search the thread, it was hard to find the right info thru all those 1100 pages.

but if you take a look at the 3 photo's i posted, you can see on 1 of them showing a temperature reading and on the other one a warning that it could not find a temperature-sensor, still it can read a temperature but it's based on algorithm and therefore not accurate.

the temp readings dance from 16 degC to 127 degC so pretty much useless.

i still haven't found how to do the same with CoolTool.

i do have a new clue what might cause the crashes. when i boot the HU and check the memory to see huch much free ram available, no apps are running.. system should be idle, yet about 470mb (from 512mb) is being used even without 1 single app started.

when i start the musicplayer, music begins to play. while music is playing i try to start Sygic, as soon as Sygic starts, the music stops.

at that moment i check the free ram: 0mb free. i press the home-button, choose music player again to start the music again, plays starts playing, then i press the Nav button, the os switches back to Sygic and music stops again.

when i do another reboot, and try the same thing again, it sometimes can get to run both (music and sygic) at the same time for a while but then 1 of them stops (sometimes Sygic continues running while music stops and sometime the other way around). and sometimes the os crashes completely.

I'm filming all these steps to show them to my seller what's going on.

this might be the cause of crashing i'm no expert i'm just brainstorming trying to find out how to solve it.

does someone know if the ram-memory expandable?
[MTCB Android Head Units Q&A] gazdaaa:
Audi A3 (8P) 2011 support

Hi, I'll soon have Audi A3 2011, and I am in the process of deciding is this HU for me,

The head unit is: KGL-7683G (custom fit for Audi A3)

It has MCU: MTCB-KGL4-V2.22 Jan 19 2015

I have few questions:

How does the unit handle IPod connection via USB? Can it read the song names and playlists and everything? Can you link me the app that does that?

Does this unit have 2-way CANBus implemented for my car, in particular, does the info of radio stations and songs in media player go to the in dash display on Audi?

Does the CANBus "Car->HeadUnit" work on Audi, in particular all SteeringWheelControls, and does it display info about doors that are open, climate info, and parking sensors on the HU display?

Does the radio app show RDS information correctly, and do the TP and AS (or AF) functions work properly?

If you are in a Music app playing music, and the radio station broadcasts the TP signal, does the HeadUnit switch to radio app and that particular station?

If you switch between Music (stock or poweramp) and Radio apps do each other mute themselves?

About Bluetooth, how can you see conacts (on the HU) that are on the paired phone, I presume you have to sync, but is it stored permanently on the HU, or just for that bluetooth session?

If you are paired to the phone, and if you are in some other app (let say music or navigation app), and when your phone rings, does the HU display accept and reject buttons and caller id on the display?

Thanks in advance,

Best Regards,

Saša.
[MTCB Android Head Units Q&A] typos1:
I specified the exact link where you could find details of how to get one of the apps to get you a temp reading, but you obviously didnt bother to read it, even though I told you like 3 or 4 times, I also said to try lots of CPU temp apps, but you only tried 2 I told you that several times as well.

STILL you have not taken advice, youve been told to send it back you wont, so, I give up, you cant help yourself even when given basic instructions to follow, you just continually ignore them.

All it takes to find out how much memory the RK3066 can take is to google the specs, I think youre just plain lazy and that you want someone to do basic of searches for you, this is not what XDA is for.

But as yove been told countless times before, no one else has your problems, so the problem with you unit is NOT that it doesnt have enough RAM, cos everyone else manages with 1 Gb.
[MTCB Android Head Units Q&A] DjCalvin:
So v 1.3 allowed me to pair it supposedly. (never prompted me for a pin. Never showed as paired in the stock settings menu.) I checked in the Bluetooth mcu menu and it was there, showing a little abd icon next to it and in the paired section.

Torque did not see it, upgraded xposedmtc to 1.3.1, rebooted.

Noticed in the torque settings I could manually select a mac address...

Selected the vgate Mac and Holy crap it started working!

I'm debating whether I should upgrade xposedmtc to 1.3.2j or not.

Thank you!

- Sent from Spaaaaaaaaace
[MTCB Android Head Units Q&A] RyanBRZ:
Just to update you guys on my issue:

Checked sub resistance with a DMM at the enclosure jacks, 0. At this point I'm thinking I need a new sub. Today, I connected the sub amp directly to my phone with headphone-to-rca wire and it did the same thing--no bass until mid volume. As this point I'm thinking new sub or new amp.

Pulled the sub out of the enclosure and noticed that the base of the speaker wire connected to the terminal inside of the enclosure was black! The terminal that this wire was connected to had black stuff on it that I had to sand off. Turns out that the amp power wasn't able to get through the buildup on the terminal until higher voltage was flowing.

So instead of using a crimp terminal plug inside of the box, I soldered 12 gauge OFC directly to the terminal to ensure a solid connection. Put everything back together and fired it up and it worked perfectly! Shame on me for doubting my Klyde! lol

Old speaker wire with crappy crimp terminals that were wobbly on the terminal jack on the enclosure

[IMG="Blackened wire"]https://dl.dropboxusercontent.com/u/97433215/BRZ/NewAudio/IMG_20150415_191752_small.jpg[/IMG]

Sanded and soldered directly to the terminal

[IMG="After"]https://dl.dropboxusercontent.com/u/97433215/BRZ/NewAudio/IMG_20150415_191619_small.jpg[/IMG]
[MTCB Android Head Units Q&A] starfox5194:
HD Radio

This guy got HD radio via USB to work on his android tablet unit.

Hardware needs to be purchased. Looks like about $150 worth. Not worth it to me. But he has an app made. Hope this might help someone who is interested.

http://rootzwiki.com/topic/44698-04-jeep-tj-install/#entry1243194
[MTCB Android Head Units Q&A] thiago.augusto.souza:
Smoke usb and burn wifi and usb.

Hi... its happned with me. Smell burn wifi and usb didnt work. There are a form to replace the burned component?
[MTCB Android Head Units Q&A] manicuspanicus:
Do i need to do anything in busybox or i just install it? Thank you
[MTCB Android Head Units Q&A] 4stimpy:
What do you think??????

I think you also have a problem reading.

nuf said, lets go on with the thread.

I am out for the moment.
[MTCB Android Head Units Q&A] J0sh_FG:
He means these 4.2.2 units:

http://www.erisin.com/es9746a-7-and...gps-obd-bmw-3-e46-m3-rover-75-mg-zt_p494.html

Seems like the HuiFei ones but they don't show amplifier, radio receiver or gps receiver hardware info. 4x50W amp shouldn't be true.

Cheers
[MTCB Android Head Units Q&A] typos1:
Yes, I do, I m not gonna spend ages trawling through a company's website finding what he or she wants cos he or she cant be bothered to ! :)
[MTCB Android Head Units Q&A] kaween:
Ah. That one is a pure droid indeed. Didn't see that one on the link Typos1 posted as the E46 posted there is in fact a hybrid.

Didn't look beyond the posted link, My appologies.

As for the Amp output, it should be general knowledge _all_ brands tend to exagerate their true outputs by a substantial margin. I've repaired countless headunits in my days as repair tech, and generally it was a safe bet that the true output power of any given headunit (even the higher end ones) were about 60% of the manufacturer specs as the used ampstage was nearly always a lot lower. :)

A lot of the Chinese units stating 4x45Watt only deliver 4x25 at best when measured, sometimes even less.
[MTCB Android Head Units Q&A] cat2115:
Thanks! it's working now.
[MTCB Android Head Units Q&A] J0sh_FG:
How difficult could it be to implement ID3 tag identification in A2DP function? Is it hardware related?

New Dynavin N6 allow this feature:

Btw, it's a WINCE 6.0 unit with a 833 mhz arm11 processor and 388mb of RAM. It uses an old resistive screen with 800x480 resolution. Its hardware is very outdated but they focused in audio quality and car implementation (displaying PDC graphics, OBC information...)

User manual: http://www.dynavin.com/images/pdf/n6_owners_manual.pdf

Cheers
[MTCB Android Head Units Q&A] kaween:
While ID3 tagging isn't really part of the A2DP profile, it IS part of the BT functionality (more specifically, AVRCP). I therefor suppose the Dynavin doesn't stop at A2DP, but adds AVRCP functionallity too.

Somewhat more indepth info : http://en.wikipedia.org/wiki/Bluetooth_profile#Advanced_Audio_Distribution_Profile_.28A2DP.29
[MTCB Android Head Units Q&A] mrd0c:
Hi,

After reading the whole thread I am about to get one of these units.

Before making the purchase, I'd like to ask, does anyone knows something about this one?

[YOUTUBE]/watch?v=FhuXS1eFIUI[/YOUTUBE]

Link on Aliexpress: /For-Audi-A3-2003-2013-Car-DVD-Player-Dual-Core-Pure-Android-4-2-OS-7/1911811200.html

I have seen comments in the thread but not a first-hand review so far.

It seems to have a couple of things that the Huifei lacks:

- Resolution: 1024 x 600

- 2 seconds fast boot

Both to be confirmed...

btw great job you are all doing.
[MTCB Android Head Units Q&A] getehem:
This is the SION unit.....can't tell you about quality....we have several orders pending in this factory for 4-5 weeks, they didn't deliver anything yet, so we don't get any comments from customers.....
[MTCB Android Head Units Q&A] kwalsh24:
SO after figuring out a solution for my power issues for my radio (going to install a bypass switch that when I want the radio on with the key off I will push a button to override the canbus) I have started the fun part, the modding. Just a couple questions, I installed the viper FX audio mode, so far it seems to only work with google play music, is there anyway possible to get this to work on the stock radio and music app?

Second, my unit doesnt have a front mini USB port (but came with the mini usb plug as tho it were to have it) Can I still hook my laptop up to one of the rear USB ports for modding? Right now I have the cable ran for the non 3g port for USB access, but havent tested as I have to acquire a male to male USB cable.

Also to update the music app, do I just do the same as the radio app? Overwrite the stock in /system/app? or will I have to sideload it with ADB?

---------- Post added at 05:06 AM ---------- Previous post was at 05:02 AM ----------

That was the unit I was going to buy, as i love the dials vs the push buttons, I decided not to go with it as I didnt trust their specs at all, and if I recall correctly, it doesnt use a rockchip, I was told it uses a 1.4ghz dual core, meanwhile the specs called for a 1.6? Researched the chip listed in the specs and it only came up as a 1ghz, so I just didnt trust what I was being told. All the units I found that looked like the one in the video were all the same processor wise, all misleading.
[MTCB Android Head Units Q&A] typos1:
OK, fair enough :)

Pretty much all car hi fi (and electronics generally) are "Chinese" even if they have Western, Japanese Korean etc badges on them, theyre made in China, this unit uses a Toshiba (Jap designed, Chinese made) sound processor.

Did you try the link I posted earlier ? :

http://www.paser.it/en/c/33/Services_Interfaces/

They seem to sell some CAN Bus stuff that may sort your problem out.

Lol, its Rockchip !!!!
[MTCB Android Head Units Q&A] J0sh_FG:
Are u sure of this info? So far I didn't hear anything about the DSP hardware of the HuiFei. Has anyone seen the actual component?

Thanks

Cheers
[MTCB Android Head Units Q&A] typos1:
Yes its mentioned several times in this thread, Toshiba sound chip, Samsung DDR3 RAM, Philips FM/AM radio chip, Rockchip processor.

Several of the listings also mention it as well.

I m sure I ve seen pics as well, but might be getting confused with the AN21-U (AN21-U, HuFei and WD8801 + lots and lots of pages to read :eek:), which also uses a Philips chip, but not sure about which othe chips it uses now.
[MTCB Android Head Units Q&A] J0sh_FG:
It's mentioned in this thread a couple of days ago by me, regarding a HuiFei clone...the KLYDE unit, But there's no listing out there showing the HuiFei unit implements Toshiba DSP or amplifier.

Yes, AN21-U radios make use of these Toshiba components,

Cheers
[MTCB Android Head Units Q&A] typos1:
Theres this one :

http://www.ebay.co.uk/itm/251550206320?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

and more if you google "android 4.2 toshiba 7384".

But theyre all listing it in the specs, no confirmation.

I do remember your post questioning the Toshiba 7384, so I spose I ve seen a few listings around that say it, I ve spoken to Sharing Digital and they say its Toshiba plus I remember reading the AN21-U thread confirming that has a Toshiba amp, so I ve assumed its Toshiba for certain.

The Chinese often mis-spell their Chinglish, as we all know so was thinking it might be a case of the numbers being in the wrong order or something.

Youre right it hasnt been confirmed . . . anyone fancy dismantling their unit ? !
[MTCB Android Head Units Q&A] J0sh_FG:
That is in fact...a KLYDE unit. The one I've spoken of.

No doubt they mis-spell Chinglish, HuiFei's GPS receiver is not a "U-BLXO" but a "U-BLOX" .

Anyway, about the Klyde, there were other signs that may lead us to determinate the "Toshiba 7384 amplifier" was actually a "TDA 7384 " made by the same brand that produced their own radio receiver: STMicroelectronics. Can't be a coincidence neither.

We'll wait till someone opens his HuiFei to confirm this component LOL

Cheers
[MTCB Android Head Units Q&A] typos1:
I also remember you saying it was an STMicroelectronics chip, which does look more likely, theyre hardly a cheapo Chinese company - if you wikipedia them theyre European.

As for these being "Klyde", I doubt it, I think Klyde is just one of many re-sellers and/or manufacturers of HuiFei units - all Huifei units I ve seen listed claim Toshiba 7384, so I suspect all HuiFeis are use STMicroelectronics TDA7384.

Also, you say that the TDA 7384 only goes to 4x42W, most sellers claim their units to be 4x45W, so this also seems to fit.
[MTCB Android Head Units Q&A] J0sh_FG:
I'm not saying STMicroelectronics is a cheapo Chinese company, never did. But if you look for the DataSheets of this chip you will find that the 4x50W output is a total LIE.

They are different units with many things in common. I explained their differences.

Klyde also have a custom launcher for the SO and different MCU.

Klyde one being this type: MTCB-KLD-Vx.xx (KLD-> KLYDE)

And Huifei like this: MTCB-KGL-Vx.xx (KGL -> Kai Ge Le Electronics)

​

Here u have a picture of a KLYDE's MCU version (I hope Mister-Z doesn´t mind...) :

You can go back and check 1-2 Hack's comment:

** I checked with Keylo - this is not a Huifei unit. They are working on 1.8.5 and just testing stability at the moment.

(http://xdaforums.com/showpost.php?p=53536310&postcount=1035)

Cheers