Related
Hola!
I'm trying to work out how to make my own XDA car kit cable. I have the pinout for the XDA - thanks to the XDA Developers Site
- http://wiki.xda-developers.com/wiki/Connectors
I also Have a pinout for the back of my Stereo (Philips CAR 400 From a Vauxhall Astra - '02) thanks to
- http://carradio.hit.bg/philips.htm
I have done some preliminary testing with small cables and connectors that go into a standard phono input on my big stereo in my room and have been successful at making a mini-kit, but am having real trouble working out what the pins on the back of the car stereo do (i.e which is for audio input from the phone)
Labels are as follows:
PHILIPS CAR400
01 - SVD
02 - SAC
03 - SCL
04 - Tel. Mute
05 - TIS
06 - Batt. +
07 - MRQ
08 - Power Antenna
09 - DDL
10 - Lights
11 - ACC ( 12 v + )
12 - GND
13 - SDA
The only one that make any sense is Tel. Mute (Anyone any idea what voltage I have to put accross this to get the system to mute)
If anyone knows what the rest of the pins stand for your help would be much appreciated.
Many thanks,
Will
You put the mute to earth to mute the stereo - normally it's floating.
1 down
Good good, one down, 12 to go.
Now I've read your question.
Answer is probably none of them. All the mute does is silence the audio (and pause the CD on some radios) - the assumption is either that you have a remote speaker for the phone or you use some commercial adapter like Autoleads to intercept the output to the car speakers via a relay. Autoleads sell a huge range of car/stereo specific leads that all provide a "generic" phone interface for Nokia phones. There are also a number of patch leads that enable you to plug specific car kits to the Nokia interface (which is just Battery, switched +, ground and mute with a 3.5mm jack for mono audio. Most knowledgeable guy for this stuff is Terry White on http://www.siocommunications.co.uk/ (he'll sell you the appropriate leads or make up what you need).
Note that the Autoleads solution (which mutes the stereo and uses relays to swich the audio from the phone to front speakers) renders the stereo automute unnecessary, but it is nice to pause the CD anyway and usually you get a front panel indication of phone call which is useful.
I note that the Philips connector also has an audio L/R/Gnd input. This is probably for an aux source like an MP3 player (eg XDA) but of course this needs to be selected on the radio and will also be muted when the mute pin goes to ground.
Hope that helps
I guess the other pins are things like CANBus, D2B wakeup etc. a bit like Siemens/Bosch
Last one. The Autolead you need is 06-078B - £47 + pp from Terry.
http://www.siocommunications.co.uk/06-078B.html
Phew!
That's a mighty big cable?
I notice that it has a 'big connector' (I've marked it in yellow on the image I've attached with this post). There is already one of these on the existing setup. This wouldn't mean I have to completely rip out all of the existing wiring would it?
Also, the jack (Red on the image) looks like a mono jack, I assume this is the bit that plugs into the phone or which I can adapt to plug into the phone?
Seems a bit expensive too, is it really necessary? Can I just forget the auto mute feature and have the phone output go through the 'MP3 In' inputs? That way I can listen to the music on the XDA through the car stereo as well as any sat-nav stuff I decide to install later on.
The main aim of my question is to try to develop a cheap solution to an XDA-Car audio interface. Do none of the connections on the back of my stereo allow me to wire in some sort of auxiliary input?
Yes it is big but it does the job and you can usually find room.
The connector(s) go in line with the ISO and stereo specific plugs, so routing all the power and speaker outputs via the relay module. You don't rip anything out, or need to break into existing wiring, so you reduce risk of problems or warranty issues - it really is the lowest hassle solution.
Yes the red plug is the phone audio input and is designed for Nokia kits.
Expensive? Not really, considering you avoid any hassles and can remove the kit after with no changes or damage to the car wiring. Replacing connectors and fixing car wiring can be expensive.
Yes you could go into the Philips cnnector from the XDA, but you would have to manually select Aux in on the radio, and it wouldn't mute anything. If you were listening to the car radio you'd need to answer the phone and also switch to aux in on the radio to hear anything. Sounds a mess to me!
OK
Ok, so assuming I use the new connector to wire in the phone and have it working through a seperate speaker, how do I connect the MP3 Outputs of the XDA into the stereo. I have no problem using a seperate speaker for the voice on the XDA but I really want to play the XDA music through the Car's built in speakers.
I understand I'll have to come up with some way of getting the sound from the XDA to the speaker AND the car stereo but I don't mind that, It's just something I'll have to worry about.
Most car stereos I've seen have a seperate set of Phono Sockets for auxiliary inputs but this philips doesn't. What do the pins on the back actually stand for in english? (Laymans terms please because I don't understand the long names but I will be able to fathom how to use them if you tell me what they actually do, long names might be ok too cos I can always look on Google to find out what the various bits do.)
Actually I screwed up - looking again at that wierd Bulgarian* site the CAR 400 looks like it has the 26 pin connector and the phone lead would be Autolead 06-053B.
http://www.siocommunications.co.uk/06-053B.html
Also it looks as though the CAR400 does NOT support Aux in - sorry about that - although you could try putting signals onto pins 9 and 10 (using 3 as Ground) and see what happens (that's what the CAR660 uses). No warranty actual or implied!!
* This guy is promoting software to crack EEPROM codes on car radios and to clock cars with digital instrument clusters. Not sure I'd be so keen to build a close relationship there mate!!
No Fear
Thanks anyway, I've got a few exams to sit this coming week so no chance to fiddle for a bit but I'll post back again once I work out how it goes. Looks like I'll have to find some sort of seperate amp and patch it in somewhere to output to the car speakers.
No connection between me and the Bulgarian bloke, just found the site on google as a means of showing you the pinout on the back of the CAR 400.
I'm assuming Pins 9 and 10 CDR and CDL stand for CD - Left and CD - Right respectively?
One last quickie before I go, can I source ISO connectors (Just the plastic bits) from anywhere so I can maybe make a patch through cable? I'd need a male and a female one.
i.e.
CAR STEREO (FEMALE ISO) ---> Wiring (MALE ISO)
becomes
CAR STEREO (FEMALE ISO) ---> NEW MALE ISO --------> MY STUFF ---------> NEW FEMALE ISO ---> Wiring (MALE ISO)
Cheers for the help, I'll have a mess about over the next few weeks and post back with my results in case anyone's interested.
Just a note to say I've found some ISO Connectors. You can get them from maplin.
http://www.maplin.co.uk
codes
QK25C (headunit end) @ £4.99
MZ76H (car end) @ £6.99
Anyone finds them a bit cheaper let me know...
Another quick note. I've found a small amplifier from Maplin (Code N67AW) 40W 6-16V. (MONO ONLY)
The instructions say it is a 'bridge type' amplifier and that the speaker connections should therefore not be to ground (As in a car).
The setup works fine on my test rig at home, but I was wondering, will I just get lots of noise if I connect it up in the car, or will I blow everything up?
So far my plan is to make a patch through cable that amplifies the XDA signal direct to the car speakers and has some form of automatic switch to detect if audio is coming through the XDA. If it is, then it mutes the signal from the car stereo and patches the XDA through.
Any suggetsions?
USB adapter. I just love the Elf phone.The only things I am disappointed in is that I cannot plug in a set of external speakers. I cannot plug in to the charger whilst watching a film as I need the socket for the headphones...
Does anyone know of an adapter to enable me to do this please? I could get one made up from the diagram, however I would prefer to buy a custom made one.
Roz
maybe something like this?
http://www.expansys.com/p.aspx?i=127184
The Elf has only a USB socket, nothing else... No phono or whatever they call it... For me this is the only fault with a superb little phone.
Thanks anyway.
dont know about the elf but all other newer htc devices have a special usb connector which also carry audio
if your device came with a headset then yours do too
as they device dont support usb host so it cant use any usb devices
nm just saw my link was wrong :S
http://www.expansys.com/htc/p_htc_item.aspx?i=148544
this was the link i ment to give you
3Way USB adapter for HTC Touch/Elf
There is in fact a 3 way adapter available. I found it after a bit of a search. For some reason some of you seemed to think I was looking for a headset. The USB socket on the HTC Touch does not allow you to use anything else other than the supplied USB headset. however I want to use a set of Sony speakers for the sound to play MP3's and as I like to watch films in bed through ORB I like to be able to charge the phone at the same time. The process uses a lot of battery power.
The adapter I found has a stereo jack socket and 2 USB sockets the same as the one on the phone. So now I can plug in my head set and charger or charger and speakers in any form I choose.
If anyone else is interested here is a link where you can buy one for about £12.00 which includes postage: http://www.elitextreme.com/htcto31ad.html
The pictures show what I was talking about...
Roz
Try here for genuine HTC accessories through Expansys HTC store, then click on your phone type in the left-hand column to list all accessories available for it.
http://www.expansys.com/htc/p_htc.aspx
Oooops! sorry Rudegar I missed your post for it already.
HTC 3 way adapter
No Expansis do not carry one. The link I left earlier does. I have mine now. It is exactly what I wanted. Cost me £12.95. Well worth it.
OK, so this is *almost* what I'm looking for:
http://www.expansys.com/htc/p_htc_item.aspx?i=147569
Does anyone know where to get an 11pin to 3.5mm adapter? One that *only* has a 3.5mm stereo output instead of having stereo+usb output?
Thanks.
http://www.expansys.com/p.aspx?i=151753
Rudegar said:
http://www.expansys.com/p.aspx?i=151753
Click to expand...
Click to collapse
Thanks for the find, but will it work even if it's for the TyTN and not specifically for the Touch?
And is it stereo as opposed to just mono?
i would asume that htc dont change the wireing of their miniusb connector flavour with each device it would serve no purpos and would cost alot for htc
i would asume that if stereo is in the miniusb connector when used for normal wired headset it would be using that converter
as it would serve no purpos for the converter to add the eletronics it would require to just take 1 channel and spit it in 2 without lowering the the volume to ½ because of the impedanc
Hello all ,
Is there a way to get an audio line-out from the Galaxy Nexus, either using an adapter or a docking station? I'm not looking for a solution like the one offered by the Samsung Galaxy S2's car dock (which streams bluetooth audio from the phone to the dock, then the dock turns the bluetooth streaming to analog audio through a 3.5mm port) but rather something like an adapter for the MHL port or from the docking station.
Appreciate all the help!
The obvious solution (at least to me) is to plug into the headphone jack. You could also use either the media dock or MHL adapter in conjunction with an HDMI-to-analog adapter such as the one linked below:
http://www.amazon.com/HDMI-RCA-comp...OQPU/ref=sr_1_2?ie=UTF8&qid=1321905031&sr=8-2
vespoid said:
The obvious solution (at least to me) is to plug into the headphone jack. You could also use either the media dock or MHL adapter in conjunction with an HDMI-to-analog adapter such as the one linked below:
http://www.amazon.com/HDMI-RCA-comp...OQPU/ref=sr_1_2?ie=UTF8&qid=1321905031&sr=8-2
Click to expand...
Click to collapse
He's asking for a line out solution because it will bypass the internal headphone amp that is utilized when the 3.5mm port is used. If you're plugging the phone into speakers or a sound system that way you'll get much better sound.
If the mhl -> HDMI cable adapter carries both audio and video, you could use an hdmi breakout adapter to split the digital audio. It depends on the HDMI output capabilities of the phone and the acceptability of digital audio for your needs.
Edit: would no doubt be a cumbersome solution. It all comes down to your usage scenario for the output.
Sent from my GT-P7510 using Tapatalk
Thank you vespoid, ardabey.
What OJ in Compton said, I'm looking to bypass the internal headphone amp, not sure if there are any details on the car dock or desk dock, I hope 3rd party manufacturers come up with something, any solutions are welcome.
Ali
Never thought about this, but a contactless dock with HDMI out directly to the AMP = audio bliss. Thanks to the forum for letting me see the obvious
Bumping this thread...has anyone successfully done this? I want line out audio for my car's 3.5mm AUX input - had it with my ipod and it sounded much better than through the headphone jack, as well the convenience of not having to maintain two volumes.
Hoping the official car dock that uses the 3 pin connector and has a 3.5 out would do this, but I'm worried it will just use BT to transmit the audio to the dock like I read the Nexus One dock did.
I wish too that the NG had line level out.
I think it's a limitation of the hardware. I think Apple is the online one that really uses line level out via it's dock connector.
I hope someday Google will use some sort of line level out on their reference hardware or built support directly into a newer OS.
I remember my old Dell DJ had line level out. Soooooo much better.
There is nothing wrong with the 3.5mm output sound quality wise.
Trying to drive headphone-like impedance (lower) with a line out isn't the best idea, but driving higher impedance inputs like your car deck isn't that bad as long as you let the amps do the "work" of boosting the volume and not your phone. While not optimal, the decrease in sound quality shouldn't be very noticeable.
The main advantage of the digital audio though USB (what apple does) IMO is that it eliminates the need to have both the USB plugged in to charge and the 3.5 mm cord for audio. It also allows song data to be shared and device control from the speaker/head unit. Good setups will recognize most android devices as mass USB storage and provide the same functionality, but I'm not sure how the MTS on the GN will affect this.
I would wait and see how the audio quality is from the dock. Even if it is bluetooth, the audio quality may not be that bad.
Lithoss said:
There is nothing wrong with the 3.5mm output sound quality wise.
Trying to drive headphone-like impedance (lower) with a line out isn't the best idea, but driving higher impedance inputs like your car deck isn't that bad as long as you let the amps do the "work" of boosting the volume and not your phone. While not optimal, the decrease in sound quality shouldn't be very noticeable.
The main advantage of the digital audio though USB (what apple does) IMO is that it eliminates the need to have both the USB plugged in to charge and the 3.5 mm cord for audio. It also allows song data to be shared and device control from the speaker/head unit. Good setups will recognize most android devices as mass USB storage and provide the same functionality, but I'm not sure how the MTS on the GN will affect this.
Click to expand...
Click to collapse
The problem is, that if the head unit supports MTP then yes it can read the device like mass-storage, thats fine, but it doesn't allow you to stream media from radio apps, youtube and turn-by-turn directions from gps, this is what we are looking for...
technically it's not sending analog audio output through the USB, its just reading the stored media on the phone.
I have read that samsung phones are able to accomplish sending analog audio through the USB while charging, with the correct resistance values (adapter) or possibly with software pointing the audio in that direction (for example code build into the framework/API)
this is one major thing that Android lacks over iPhone, this problem should be addressed ASAP. I'm hoping CM9 might be able to find a solution for this.
I agree, i hope they fix this soon toi. It would make the development of accessories much easier for all android phones. Seems like a no brainer but I guess Google has other priorities...
A feature request for Android 4.0 to enable USB audio:
http://code.google.com/p/android/issues/detail?id=24614
Juvenall said:
A feature request for Android 4.0 to enable USB audio:
http://code.google.com/p/android/issues/detail?id=24614
Click to expand...
Click to collapse
Just starred this, if the hardware is able to do that I find it completely stupid that they do not allow it.
Smartphones audio amps are not exactly famous for being top-quality so having this possibility would be great.
Thanks. The lack of this feature is ridiculous/mind-boggling/suprising.
Well, if you were waiting for the card dock to solve your problems... it doesn't. Plugging into the dock's "line out" gets you amp driven sound. I really do not understand why this is such an issue for Android. When I plug somoething into my 3 year old Nokia smartphone a window pops up for me to choose headphones, headset or line out. Why can't ICS offer the option and if in the car dock, default to line out? A USB solution is not going to help if you are using the car dock.
Juvenall said:
A feature request for Android 4.0 to enable USB audio:
http://code.google.com/p/android/issues/detail?id=24614
Click to expand...
Click to collapse
Yes, most def. I want to use several USB dacs on hand. Off for some op amp rollin'.
Edit: The pogo pin dock has a 3.5mm analog/digital output, FYI
Oops
flacoff said:
Edit: The pogo pin dock has a 3.5mm analog/digital output, FYI
Click to expand...
Click to collapse
Which if I understand correctly uses Bluetooth to transmit compressed audio from the phone to the dock, then delivers it through the 3.5mm jack. Why not just have a digital signal go through the USB port!?
ali87 said:
Which if I understand correctly uses Bluetooth to transmit compressed audio from the phone to the dock, then delivers it through the 3.5mm jack. Why not just have a digital signal go through the USB port!?
Click to expand...
Click to collapse
actually the pogo pin transfers the digitial audio and the dock decodes it into analog to the 3.5mm output
Hi ppl,
I'm looking for a viable car dock solution. Ideally, it should pack both aux connectivity and charging.
Actually I found this Samsung Galaxy S II I9100 Desktop Dock
which effectively charges the phone AND gives aux connectivity trough the USB port.
Of course it's not designed for a car, yet I think I could find a way to fix the dock to the dashboard.
Question is...
Will it hold the phone tightly enough to use it in a car in portrait/landscape mode ?
you mean the one that stands the phone portrait right?
it should hold just fine but you cant put it on landscape.. why would you use a desktop dock as a car dock anyway? i mean, its not meant for it..
car dock works better.. you could set it on both portrait or landscape..
aux output? buy a 3.5 to 3.5 jack and plug in to your head unit (if it has 3.5 aux input)
power? if your car have usb socket (for ipods, usb drive, etc) you can plug in your phones data cable to charge the phone..
use either:
blu-tack or
velcro + superglue
zeitgeb3r said:
use either:
blu-tack or
velcro + superglue
Click to expand...
Click to collapse
Or a mixture of all three?
The official Samsung Car Dock has AUX out and USB Charging...
I bought yesterday this car dock from Samsung: Samsung Galaxy S2 ECS-V1A2
(sry cant post external link, cause im to new on this board ^^ )
Its perfect, strong hold on the window, but u can easy remove it. It charges the phone and has a aux out. It also let ur S2 turn into Car Mode when u dock it in.
The front from the car dock can be removed with the phone inside.
The desktop dock from ur first post is also for landscape mode, so u can lay the pohne on the side.
Hope i could help u.
Thank you all !
I didn't notice the official car holder has such a feature. I'll go for it !!
Im using the official car holder too. You really need two hands to get the s2 out of it. If you try it with one hand, it might also work, but no matter how much you have fastened the screw it will move.
The integrated aux input is not working properly. The audio signal is about 30% of the quality the headphone jack gives you. I recommend using Bluetooth or the headphone jack. Though, having such a port w'that is not useable is really annoying...
Why don't you use a car mount holder as a desk dock
Can the Samsung car dock accommodate phones with cases? Will the fit with say a TPU rubber case?
Hi,
I want to have only 1 plug to insert in the Samsung Galaxy S2 to have:
- Audio output
- AND power charging
This is possible by using the micro-usb port of the Samsung Galaxy S2.
This is how the official Samsung docks works: http://www.samsung.com/us/mobile/cell-phones-accessories/ECR-D1D3BEGSTA )
But I am not looking for a dock, I just want a cable ! (it is much more convenient than a dock)
This cable would be like this:
Code:
|---------> Audio output jack
Micro-USB <---|
|---------> Standard USB (type A)
Where can I buy such a cable ?
Regards, Chris
I guess you have to make one yourself. It shouldn't be too difficult.
You just have to solder a 365K resistor to the ID pin of the micro usb plug. Then solder The data pins and the ground pin to a 3.5mm socket. At last you need to solder the +5V pin and the ground pin to the USB plug.
I have to say I like the Idea of such a cable, I think i'm goibg to make one.
I got the official vehicle dock and the sound coming from the line out isn't so good compared to the headphone jack. I'm wondering if the components within the dock is to blame or the phone itself (kernel?)
If the OP does find a cable that does the job I'd be keen to know how it turns out.
wurzelsepp3 said:
I guess you have to make one yourself. It shouldn't be too difficult.
You just have to solder a 365K resistor to the ID pin of the micro usb plug. Then solder The data pins and the ground pin to a 3.5mm socket. At last you need to solder the +5V pin and the ground pin to the USB plug.
I have to say I like the Idea of such a cable, I think i'm goibg to make one.
Click to expand...
Click to collapse
I am very surprised, no one is manufacturing such a cable. I am sure there is a big business for it.
I have never soldered anything. It is possible to make 2, one for me as well ? I would be very happy! I am based in Paris.
bricked_tab said:
I got the official vehicle dock and the sound coming from the line out isn't so good compared to the headphone jack. I'm wondering if the components within the dock is to blame or the phone itself (kernel?)
If the OP does find a cable that does the job I'd be keen to know how it turns out.
Click to expand...
Click to collapse
The quality should be good, as Samsung is selling a docking stations to output the sound on a hifi system. Bad sound quality is not noticeable on basic headphones, but on a hifi system that would be catastrophic (so Samsung would not sell docking stations).
bricked_tab said:
I got the official vehicle dock and the sound coming from the line out isn't so good compared to the headphone jack. I'm wondering if the components within the dock is to blame or the phone itself (kernel?)
If the OP does find a cable that does the job I'd be keen to know how it turns out.
Click to expand...
Click to collapse
You need an amp to improve the sound from the line out since it is unfiltered and not treated through the phone's yamaha pre amp.
chiefroastbeef said:
You need an amp to improve the sound from the line out since it is unfiltered and not treated through the phone's yamaha pre amp.
Click to expand...
Click to collapse
Thanks a million chiefroastbeef! Luckily I have a cmoy amp and man did it make a difference. I'm keeping this post short because I don't want to hijack the thread any further so thanks again chiefroastbeef
bricked_tab said:
Thanks a million chiefroastbeef! Luckily I have a cmoy amp and man did it make a difference. I'm keeping this post short because I don't want to hijack the thread any further so thanks again chiefroastbeef
Click to expand...
Click to collapse
Ahh, the cmoy, very cool headphone amp. I have a DIY AMB mini3 with an Alien dac connected to my computer. Now with the info from this thread, I really want line out! Though I must admit, 2.3.5 with poweramp sounds really good.
Ok the Cable is finished, when plugging the cable in the phone automatically enters dock mode and outputs audio via the micro-USB port.
Quality is OK I guess (I will compare it to the quality of the 3.5mm headphone-jack output), but keep in mind that I'm not an audiophile .
The build quality of my cable is not great, but it was more or less just a proof of concept.
wurzelsepp3 said:
Ok the Cable is finished, when plugging the cable in the phone automatically enters dock mode and outputs audio via the micro-USB port.
Quality is OK I guess (I will compare it to the quality of the 3.5mm headphone-jack output), but keep in mind that I'm not an audiophile .
The build quality of my cable is not great, but it was more or less just a proof of concept.
Click to expand...
Click to collapse
That looks very promising, thank you for sharing!
Keep in mind, line out is unfilter, unamp audio output, so the sound will sound a bit bland. One must plug an amp into it to "color" the sound.
Good on you, wurzelsepp3. As for the audio quality between the headphone jack and line out I'm pretty sure you'll notice it but it shouldn't be a problem if you just want the functionality.
I just tested the cmoy amp in my car and it sounds good now.
wurzelsepp3 said:
Ok the Cable is finished, when plugging the cable in the phone automatically enters dock mode and outputs audio via the micro-USB port.
Quality is OK I guess (I will compare it to the quality of the 3.5mm headphone-jack output), but keep in mind that I'm not an audiophile .
The build quality of my cable is not great, but it was more or less just a proof of concept.
Click to expand...
Click to collapse
Excellent !!
I need such a cable too !
Can you post how you built it ? I am not good at electronics.
I guess you have taken:
- a USB (type A) cable
- a jack cable
- and a micro-USB
and then cut all of them to just keep the plugs. But then how did you joined the different cables together and how did you installed the resistor ?
wurzelsepp3 said:
Ok the Cable is finished, when plugging the cable in the phone automatically enters dock mode and outputs audio via the micro-USB port.
Quality is OK I guess (I will compare it to the quality of the 3.5mm headphone-jack output), but keep in mind that I'm not an audiophile .
The build quality of my cable is not great, but it was more or less just a proof of concept.
Click to expand...
Click to collapse
Hai wurzelsepp3,
I like your cable could you please post more photos of cable end pins and give more details of connection diagram, it will help us to make one.
Thanks n advance
wurzelsepp3, can you send the description of you cable.
Regards
I made a little paint drawing to show the wiring I hope it helps.
I will try to answer any questions .
Thanks for Image
Hi wurzelsepp3,
Thanks for your Sketch, please confirm whether it is same for car dock mode and desktop mode only by change of resister value and please confirm following my comments
1) Is it possible to charge the phone as per your sketch through PC usb port and via car charger out.
2) Is it possible to hear songs from stereo socket out through stereo headphone.
3) Is it possible to connected car audio system/external sound system because i saw another link like this
http://forum.xda-developers.com/archive/index.php/t-1249775.html
http://imghostr.me/images/5p7yC.jpg
http://imghostr.me/images/gs7Sp.jpg
http://imghostr.me/images/geac.jpg
Thanks n regards
Safeed
wurzelsepp3 said:
I made a little paint drawing to show the wiring I hope it helps.
I will try to answer any questions .
Click to expand...
Click to collapse
safeed said:
Hi wurzelsepp3,
Thanks for your Sketch, please confirm whether it is same for car dock mode and desktop mode only by change of resister value and please confirm following my comments
1) Is it possible to charge the phone as per your sketch through PC usb port and via car charger out.
2) Is it possible to hear songs from stereo socket out through stereo headphone.
3) Is it possible to connected car audio system/external sound system because i saw another link like this
Click to expand...
Click to collapse
Yes the only difference between car and desk-dock mode is the resistor value.
1) Yes the USB-plugs only purpose in this setup is to supply power, so any charger will do the job
2) Yes, but you have to keep in mind that the sund coming out of the micro usb port isn't amplified, so sound quality and volume are rather low, so you might wanna use an external headphone amplifier
3) Yes, as car and external audio systems have a amplifier it should work quite well.
Would something like this work?
http://www.ebay.com/itm/Samsung-ET-AUM3SBEBXAR-micro-USB-3-5mm-Male-Line-In-/250956064170?_trksid=p3286.m7&_trkparms=algo%3DLVI%26itu%3DUCI%26otn%3D3%26po%3DLVI%26ps%3D63%26clkid%3D5051243939125627988
i will have 3 cables to sell on here for $25 by the end of the week. Let me know if people want them
Docking Station
Finally I made my own style 3 in 1 Dock station, includes Car dock, Home dock and auxiliary audio out with the help of selector switch. Conversion of car dock to home dock by sliding the selector switch,also possible to charge the phone from home or Car dock mode. Auxiliary audio sound is nice to hear and All items compacted in small case.
Thanks for all, to give me such idea and sketches.
Are all the micro-USB to 3.5mm jack you find on eBay the same? Do they have the same pinout/resistance required for use on the SGS2?