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Joying 5.1 HU, USB connections

Re Post from MTCB forum,
Just installed a Joying:
. SKU: JY-UL124 . Quad Core Android 5.1.1 Lollipop OS Capacitive 7" High Definition for Universal Double Din . CPU: RK3188 1.6GHz Cortex A9 Quad Core, Resolution 1024*600. RAM：DDR3 1G, 16 GB memory
To my 2014 Australian Hyundai Elantra.
I waited to get the latest HU from Joying that has an unrated mother board and USB/ Comms board. With Lollipop 5.1.1. the unit performs very well with none of the problem previously mentioned on these pages. The internal and external mics are clear and the Bluetooth systems are perfect. Unit has been rooted and I don't seem to need for apps so I won't changed the software now.
The dimming for the button and the screen to follow the vehicles rheostat was fixed by making a circuit to invert and amplify the rheostat output to the HU ill line. Work's well, Kudos to the guys at the Subaru forums.
I had one bug fixed by Joying when the GPS nav was muted whenever I plugged in the DVR front camera. Joying quickly sent me a link to re flash my firmware and the problem was fixed. I have them currently looking into a bug when I view the DVR input shown on the HU I get lots of flashing to the screen in all pixel settings. I have been told this will be fixed in the next firmware update soon.
One problem that I can't solve is when I try to use my vehicles Multimedia Jack located in my center console. There is a Aux and USB jack there. All wiring from console to HU is complete. If I connect a USB stick to the Jack in the console then then HU struggles to connect and gives up. If I interrupt the USB plug and socket behind the HU then I am able to use the USB correctly. Looking at the car wiring diagrams there is a amplifier cct behind the Multimedia Jack supposedly to amp up the USB to HU. Doesn't seem to work?
Any ideas appreciated.
Duke
CadillacMike
19th May 2016, 04:28 PM |#2
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Flag Louisville, KY
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i have nothing to add, other than interested to see what the result is. Are you saying that your car comes with a built in hub in the console, and you are trying to make that USB port in the console work to the Joying head unit? my vehicle is similar, and I would like that to work as well
Update
Yes I have a console hub I guess.
The book calls it a multimedia center. Just an Aux port and a USB port or Jack in the tidy bin in the center console. If I by pass the Jacks and directly put the USB stick into the USB tail from the radio then it works fine. When I plug into the console port it tries to read it and fails. The HU then reports a read fail, have tried other known working USB sticks.
I have inspected behind the console jacks and found a cct board attached to the Jacks and then to the car wiring. From looking at the diagrams of the car previous to mine I see a cct board containing what looks like an amplifier. Tracing the car wiring to the radio input connectors seems to be OK and the wiring correct. Voltages at the radio connector are right in that there is 5v +ve, negative - earth and the center pins are data as they should be.
The console Jacks
w.hemanual.org/multimedia_jack_description_and_operation-2037.html
The wiring for same (mine is same but more complex)
w.hemanual.org/multimedia_jack_schematic_diagrams-2036.html
Really bugs me not to be able to access that USB input Jack esp as the radio is a great unit.
Duke
bsavoir22
21st May 2016, 07:05 AM |#4
Senior Member
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You need to post this question in the MTCD (Lollipop) hardware thread. This thread is for MTCB (KitKat) units. The hardware in the MTCD headunits are very different than the MTCB headunits.
Thanks and done - I still have the same problem
Duke

Hello, i'm interest in tthis unit,https://www.carjoying.com/quad-core-android-car-radio/quad-core-vw-android-car-radio/joying-2016-latest-aftermarket-european-warehouse-lollipop-android-5-1-1-car-head-unit-autoradio-quad-core-double-din-gps-navigation-system-stereo-radio-support-reverse-camera-dvr-g.html and dont' know if it's the same you have. Can you tell me if you have some lag problems or something? does the hardware handles well the software?

Bob
Seems the same. Same CPU, platform, Specs etc. I think being a "VW Golf Passat Jetta" model from Joying it probably has some firmware in it to pick up your particular car's Bluetooth connections. The front surround looks like it has been added to my "Universal" type to fit neatly into your dashboard. The case and rear connections are identical. I see they have added a CanBus box which my car did not need but looks like yours does. There is probably a harness with it to fit your wiring loom.
if you run a lot of apps at once there is some lag not bad though. Like if you had the radio on and the GPS on and DVR the traffic then that's a pretty big load so then there is some lag but you get used to it. You might have to wait a second before an icon or screen switch becomes available. When running only a few apps at once there is no lag issues.
I like mine a lot, would not replace it with the OEM.
The problem mentioned below is one with my car only. My car's remote console jacks for the AUX and USB have their own preamp so I have by passed them and put in a aftermarket remote Aux USB and that works ok.
I am half way through doing a write up on the modifications and install if anyone is interested.
Duke

Hey mate, does it run Android auto? Trying to figure out which units can and can't. Looks like any running Android 5 can but trying to figure it out. Thanks!

Eonon Unit not switching to Back-Up Camera.

Okay so Im trying to get my Eonon Andoid head unit for my E46 BMW to switch to Reverse Camera when I put it in reverse. I have wired the camera up for power from my reverse lights and ran RCA to the front and connected it to the head unit. This worked fine when my car had an Auto transmission but after I swapped my car to a manual transmission the camera will not auto launch on reverse. It does work as I downloaded an app to open camera and when I put it in reverse the camera shows whats behind me. But if I'm not manually opening the camera app the head unit does not switch. Any ideas?

Eonon may have mislabel the RCA lead, did you try the other video in leads? It should have come on when the camera got power from the reverse positive lead. May also be a firmware issue. Contact Eonon on Facebook and describe it to them. They may send you a firmware update.

Ford Focus mk3 2012-2013 SYNC issue MTCE

After any help or advice about issue im having with my new Android Head Unit
My Previous stereo was the Sony Unit that has 1 connector and had the small screen with 1 connector in my Ford Focus mk3 2012-2013 Titanium
Installed this
iceboxauto.com/ford-focus-2012-android-8-v5712
MTCE_MX2_V2.79_1
Android 8
All the Canbus info is coming through fine like the temp and doors and the Volume buttons on the steering wheel work fine.
However my SYNC voice button on the steering wheel no longer works and the SYNC app on the New Unit does nothing.
The Canbus hardware that came with the unit has a Power Connector 2 which does not have anywhere to connect to in my Focus as my Stereo simply didnt have this connection
EG
static.seicane.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/1/-/1-hd-touch-screen-car-audio-11_31.jpg
My supplier also seems confused since i dont have this extra connection and the factory arnt helping either. They just said The Sony Radio is the only radio that does not have a Sync Cable.
Been in the Factory Settings and the canbus is set to "62 FOCUS_ECOSPORT&ESCAPE&CARNIVAL(Simple)"
Have to assume SYNC is someway using the Canbus since there is no separate Cable. Not sure if this is hardware or Software issue
Thanks

maybe this ??
The AFSI-01 retains the Ford Sync and R.A.P features when installing an aftermarket radio in Ford Lincoln or Mercury vehicles equipped with Sync. (Does not work in vehicles with factory navigation.)
It includes an LCD display for Sync system status. It also supplies parking brake reverse and VSS outputs for aftermarket radios with built in navigation.
Provides accessory (12-volt 10-amp)
Retains R.A.P. (retained accessory power)
Used in non-amplified systems
For standard sound systems with stand-alone subwoofer – use part number 70-5522 along with the AFSI-01
For SONY/THX amplified systems – use part numbers AX-ADBOX2 and AX-ADFD01
Provides NAV outputs (parking brake-reverse-mute-speed sense)
OE Bluetooth retention
Retains SYNC
Adjustable gain control for SYNC
High level speaker input
Micro B USB updatable
http://www.metraonline.com/part/AFSI-01

Ford Focus ST Android radio
Hello ... I have a Ford Focus ST 2016 and I recently purchased a 10.4-inch android radio from the Ownice-C600 model. The problem is that one of the car plugs(54pins) does not match that of the system(24pins), I say that the steering wheel controls do not work. In the plug with which the system is equipped is 3 cables.

Hi, did you resolve it? I also have the power cable 2 and I do not have it where to connect .. the other cables have you connected where? To turn on the button backlight or turn the radio on when the key is not in the 1st position. Thanks Tom

Requesting SWC help on a Joyins SC9853i

Hello all!
I've got a Joying Octo-core 4Gb/32Gb 8.1 SC9853i unit installed in my 2005 Toyota Prius (w/nav and jbl sound.). I'm very pleased with the main functions of the unit, but I'm having a couple of issues. I've been messaging Joying about it. They're trying to help, but I'm getting the impression they aren't quite tracking me.
The first issue is with the steering wheel controls. My car has the three wire controls which are attached to key1, key2, and ground on the Joying supplied Toyota harness. I have double, triple, and quadruple checked these wires on both sides of each connector. Using my multi-meter, I can see changes in resistance upon button presses when checking from key1 to ground, and different buttons from key2 to ground, exactly as expected. I can see this happening all the way to the iso plug that goes to the back of the head unit. The signal is definitely getting to the unit.
When I go into the control software, though, absolutely nothing happens when I try to program buttons. There is a batch of numbers across the top that are supposed to change according to resistance, but they are quite stubbornly sitting at 255.
If my phone was exhibiting squirrelly behavior like this, I'd re-flash it and start fresh. Extending this concept to the head unit, I found Joying's update page and pulled a fresh copy of the firmware, carefully checking the version for my head unit. This one is the 4.3 release. It appeared to flash successfully, but there was no change in the SWC functions. I also tried the 3.29 release to no avail. I ended up sticking with that one for now, as notifications don't work on the newer release. I also rooted it with Magisk. That didn't change anything, not did I expect it to.
I'm also having difficulty with my reverse camera. My car did not have one to start with, but I added one a very long time ago using a CanView system (a low-production aftermarket mini computer that injected video via the navigation feed.) I've removed all of that except the camera itself, which is a simple thing that produces video on a composite RCA plug, which I've plugged in to the rev-video jack on the head unit. It completely refuses to switch to the reverse video.
My harness has a can-bus decoder which I thought would pick up reverse, but I'm starting to think it only enables the jbl amplifier. So, I grabbed a reverse wire from the tail light and connected it to the appropriate wire in the harness. It still won't switch. I even tried using an always-hot to test the reverse and it wouldn't switch. I repeated this with a completely different RCA camera, just in case the problem was with the installed one. No dice.
I'm at a loss for what to do to troubleshoot now. Anybody have an idea?

cannot say anything about SWC as i have different HU.
About reverse camera - can you post the picture of your harness? Usually HU has the wire marked as "BACK CAM" or "REV CAM" or "REAR CAM" or similar, and the +Vcc (or GND) on this cable controls the switching to reverse camera view. Some HUs have switchable setting to detect either +Vcc or GND on this cable - pls check this also (it is in the car settings in a part protected with password).

Hello fellow Prius NHW20 owner! I have just installed a SC9853i based Android 8.1 unit (can't post link yet, search for Nuoweida 9853 solution). My steering wheel control works fine. I connected a 68 Ohm resister between pins 9 and 10 of the CN703 port. I connected SW1 (pin 7) and SW2 (pin 8) and GND (pin 6) to the corresponding wires of the head unit. I used the Toyota Steering Wheel harness that I got from ebay.
I still haven't installed the rear camera. Let me know if you have any questions.

PX6 in VW Transporter T5.1

I'd like to hear from anyone who has got a PX6 in their Transporter T5.1.
I bought an "SWC" / "Erisin" PX6 4GB/32GB Android 9 HU to replace my PX5. Fitted it and discovered it was not MTCD/MTCE.
I could not get my reversing camera to work with it*. All I got was a flashing "No video signal" message. I sent the HU back for a refund.
Would still like to get a PX6 but need the reversing camera to work. Would prefer MTCD/MTCE. Anybody on the forum done this?
My van is a 2014 BlueMotion 84kW TDI model. I believe 2014 models are a bit "special" electrically. I'm just trying to gather information about PX6 HUs that might work in my van.
(*Longer version: Tried triggering the HU Reversing function with: just CANBUS; with direct connection to reverse light +ve; with connection to +12v via a relay; and connection to battery +ve. (These last 3 by cutting into the wiring bundle as suggested by Chinese technician) but nothing worked. The (rear facing) camera worked perfectly when plugged into the HU's RCA DVR connector and camera now still works with my re-fitted PX5)

Hi there,
Did you make it work eventually?
Here is my experience with a PX6 on my T5 (2009) - will copy paste a post which I already wrote in another thread:
I recently noticed my PX6 unit doesn't see any of the front / rear cameras. With all wires connected the f-cam app shows the orange triangle (no signal) for both front and back cameras. The same happens if I give a 12v signal to the reverse (pink) wire.
I never got to install the backup camera in my car but I did bench tests with a power source and had the cameras working when I first got the unit. Now, a few months later, the cameras simply don't work
I tested with 2 different cameras and also with a DVD player and none worked.
I even opened the unit and checked the motherboard to see if there is a fried circuit or IC...and saw nothing. The video inputs lead to a IC labeled "FMS6502" and the signal gets to it through a 75ohm resistor and a capacitor which both look okay.
What can it be?​
So these being said, I am afraid these units have some hardware issue with the front/rear camera inputs.
PS: on my Opel Combo car I have a PX3 unit with working rear camera !

cflaviu said:
Hi there,
Did you make it work eventually?
Click to expand...
Click to collapse
No, I sent it back for refund.
Here is my experience with a PX6 on my T5 (2009) - will copy paste a post which I already wrote in another thread:
I recently noticed my PX6 unit doesn't see any of the front / rear cameras. With all wires connected the f-cam app shows the orange triangle (no signal) for both front and back cameras. The same happens if I give a 12v signal to the reverse (pink) wire.
Click to expand...
Click to collapse
My reversing camera worked if plugged into the f-cam input, but of course this is useless as you need it to be triggered by going into reverse and f-cam input is not. Atleast it meant I could be sure nothing was wrong with my camera.
I never got to install the backup camera in my car but I did bench tests with a power source and had the cameras working when I first got the unit. Now, a few months later, the cameras simply don't work
I tested with 2 different cameras and also with a DVD player and none worked.
I even opened the unit and checked the motherboard to see if there is a fried circuit or IC...and saw nothing. The video inputs lead to a IC labeled "FMS6502" and the signal gets to it through a 75ohm resistor and a capacitor which both look okay.
What can it be?
Click to expand...
Click to collapse
I think my PX6 was expecting something special in the trigger signal. 12v DC from the reverse light did not work. Nor did 12v DC straight from the battery via a relay. The PX6 wiring loom lets you choose between CANBUS and non-CANBUS configuration. Neither of these worked. I even hacked the wiring on instructions from Erisin in China with no success (They clearly misunderstood their own wiring diagram though, so I never expected the hacking to work).
So these being said, I am afraid these units have some hardware issue with the front/rear camera inputs.
PS: on my Opel Combo car I have a PX3 unit with working rear camera !
Click to expand...
Click to collapse
I think you are right. There is a hardware issue. I have a PX5 which works fine with the reversing camera input but the trigger signal has to be 12v DC direct from the battery via a relay triggered by the reversing light.
It was a shame because the PX6 was faster than my PX5 and the screen was brighter. But not having a reversing camera was a showstopper.

Thanks for you reply!
Regarding activation of the reverse screen, I managed to make good use of the canbus decoder box which they sent me from China (first one didnt work, them they sent me another one which recognizes the CAN messages correctly).
So the problem is that the unit doesn't receive the video signal from the camera, although it gets into reverse mode.
Moreover, the unit doesn't show the camera image by using F-Cam app either...hence I believe it is the video controller (FMS6502) that is faulty. I have to check it with a multimeter based on the specs of it...
These units are atractive but they have serious flaws in their mechanical (cheap plastics, buttons, etc) and electronic design.
Sending the unit to warranty in China is a lost cause too...
Cheers

cflaviu said:
Thanks for you reply!
Regarding activation of the reverse screen, I managed to make good use of the canbus decoder box which they sent me from China (first one didnt work, them they sent me another one which recognizes the CAN messages correctly).
So the problem is that the unit doesn't receive the video signal from the camera, although it gets into reverse mode.
Moreover, the unit doesn't show the camera image by using F-Cam app either...hence I believe it is the video controller (FMS6502) that is faulty. I have to check it with a multimeter based on the specs of it...
Click to expand...
Click to collapse
Yes, it sounds like you have a hardware fault. For me it was some sort of incompatibility in the camera signal/reverse trigger.
These units are atractive but they have serious flaws in their mechanical (cheap plastics, buttons, etc) and electronic design.
Sending the unit to warranty in China is a lost cause too...
Click to expand...
Click to collapse
My Erisin branded PX6 was very poor quality compared to my Xtrons branded PX5. The connectors and the buttons on the PX6 were very fragile.
I was lucky: the UK importer refunded my money, but only after I told them I would raise a dispute on EBay.