3.5mm jack to aux + USB charger issue - Touch HD Accessories

I've got a USB charging cradle in my car which works fine.
I use a 3.5mm cable to connect my mp3 player to the car stereo which works fine.
I tried playing music from my HD to the stereo whilst charging and I get awful white noise and a constant pinging noise. If I take the phone off the charger it works fine. I can't find anything in the wiki or forums and I've seen some people on other forums with the same problem.
Anyone know what is wrong with this setup or I need a different spec cable (I guess its a standard stereo 3.5mm cable, so 3 contacts and I think the HTC one has 4 coz of the mic, but it works fine when I stop charging it. I guess it could also be a problem with the pins on the USB charger, but I thought the HD didn't have the extUSB connection.
I'm off to the USA on Sunday with a hire car so it would be really handy to be able to charge and play music!

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Need to be able to recharge Hermes and play MP3's through car stereo at same time

Anyone have a solution for this? I'd like to be able to play MP3's through my car stereo (via FM transmitter), as well as have it plugged into my car lighter to keep it charged.
I figure I can buy the audio adapter and plug it into a generic FM transmitter. I could also buy a boxwave Versacharger to charge it. But I can't do both at the same time b/c they both use the mini USB.
In any event, this proprietary crap sucks.
The only option I'm aware of:
http://www.mobileplanet.com/p.aspx?i=140425
yes, this is the UNIC option.. because:
a) HTC Proprietary connector: it's VERY DIFFICULT to find this type of mini-usb connector
b) Stereo headphones provided with hermes DOESN't have cables to charge the pda
Expensive option... get a bluetooth headset with 3.5mm input to connect to your FM transmitter ... and say bye bye to wired music.. almost..
sickchilly said:
The only option I'm aware of:
http://www.mobileplanet.com/p.aspx?i=140425
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Excellent! Exactly what I was looking for....
new2city said:
Expensive option... get a bluetooth headset with 3.5mm input to connect to your FM transmitter ... and say bye bye to wired music.. almost..
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Heheh... I actually thought of that. I think I'll go with the cheaper option
Here's how I did it:
http://forum.xda-developers.com/showpost.php?p=1078942&postcount=26
Has anyone managed to not only get the sound going through their speakers, but have their stereo mute on incoming call?
I'm not sure this is possible. I imagine your average phone has a pin it sets closed or high or something. The hermes doesn't seem to..
URPREY: Does the adaptor give you one standard mini usb for charging then split the 'special' audio pins to the other standard mini usb? Did you then just adapt a mini usb cable to hook into the line level inputs of your stereo?
icemantwilight said:
URPREY: Does the adaptor give you one standard mini usb for charging then split the 'special' audio pins to the other standard mini usb? Did you then just adapt a mini usb cable to hook into the line level inputs of your stereo?
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It gives me one mini USB for charging, and a port exactly like that on the hermes for the audio/headset portion. I used a usb to 3.5mm adapter from mobileplanet.com to give me the 3.5mm audio out.
URPREY said:
It gives me one mini USB for charging, and a port exactly like that on the hermes for the audio/headset portion. I used a usb to 3.5mm adapter from mobileplanet.com to give me the 3.5mm audio out.
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Yep, sorry, didn't see the extra adapter. That's a shame. It makes the very expensive first plug poor value for money.
If they come out with an adapter that turns it into mini USB and 3.5mm I'll go for it.. otherwise..
2 other q's:
1) With the first adapter, can you then use ANY usb car charger (ie does it bridge the NC pin to ground?) or do you then need your car charger to do that
2) What triggers 'headphone' detection? Is it the first adapter, the stereo adapter or is it actually plugging speakers into the stereo adapter?
This information would be extremely helpful, thank you!
icemantwilight said:
1) With the first adapter, can you then use ANY usb car charger (ie does it bridge the NC pin to ground?) or do you then need your car charger to do that
2) What triggers 'headphone' detection? Is it the first adapter, the stereo adapter or is it actually plugging speakers into the stereo adapter?
This information would be extremely helpful, thank you!
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I can use any car charger, but the other ones I have don't provide enough power to consistently cause the 8525 to recognize the charger (and thus they don't always charge).
I don't know the answer to your second question. I'd be happy to check it out for you tomorrow when it's light outside again
URPREY said:
I can use any car charger, but the other ones I have don't provide enough power to consistently cause the 8525 to recognize the charger (and thus they don't always charge).
I don't know the answer to your second question. I'd be happy to check it out for you tomorrow when it's light outside again
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Cheers for that. By not consistently recognize you mean it detects it the first time you plug it in then not anymore? If so that sounds like what I've found too.. it's due to the 'spare' pin 4 (or 2 or B depending what diagram you're looking at) not being grounded. The fact it detects it once per reset seems to be a bug.
icemantwilight said:
Cheers for that. By not consistently recognize you mean it detects it the first time you plug it in then not anymore?
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Correct. The car charger that came with my device holder works perfectly and consistently charges my phone every time I plug it in, so I've always use that one.
URPREY said:
I don't know the answer to your second question. I'd be happy to check it out for you tomorrow when it's light outside again
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Had a chance to look at this?
icemantwilight said:
Had a chance to look at this?
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Sorry - yes. With just the audio adapter hooked up, the sound continues to come out of the rear speaker. When I plug in the headphones, the sound switches to the headphones. Hope that helps.
URPREY said:
Sorry - yes. With just the audio adapter hooked up, the sound continues to come out of the rear speaker. When I plug in the headphones, the sound switches to the headphones. Hope that helps.
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Yep thanks. From this I can work out from the pin outs that have been worked out that the tytn detects headphones (and thus shuts off the back speaker) by testing impedance/capacitance or something on the speaker out cables.
Since there are no official cradles for the tytn I'm looking at knocking up a solution like yours, charge in the car and gps nav through the stereo (was hoping for auto stereo mute on call but that's a pipe dream) and doing it without the 2 expensive adapters and car charger my jasjam didn't have.
I've gathered a bit of info about the usb connection from various sites and forum topics. Maybe I should create a/add to the hermes usb port page in the wiki, if anyone but me is interested..
I hope the tytn Y cable is NEEDED, because there isn't a male "minu usb" jack like the one on the hermes in commerce. Cutting original headphones has no results because you can't charge it.
I have thought to buy tytn y cable, open it, and if there is some space inside, to add a 2.5mm - 3.5mm (depends on the free space) jack
So the Y adapter has 3 outputs: to charge, headset & jack.
If no space is avaiable, i cut my headphones and plug it from y cable to my stereo (also with mic included).
Another thing, to detect ORIGINAL CHARGER must be connected B & A pins, as described in THIS url comments
I agree with wiki page
SkizZO said:
Another thing, to detect ORIGINAL CHARGER must be connected B & A pins, as described in THIS url comments
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Ah yeah, I'm Iceman, I wrote that
Based mainly on comments in this thread, some other posts and some jiggery pokery with a multimeter and checking pinouts.
icemantwilight said:
Has anyone managed to not only get the sound going through their speakers, but have their stereo mute on incoming call?
Parrot makes a BT car kit that connects into all factory stereos to use the speakers to play the phone or mp3 through the car stereo speakers. Obviously the mic is a separate item, but incoming calls (or listing to mp3s from your BT phone) do mute the car stereo during the call.
several kits work, but I have Parrot CK3000 Evolution Bluetooth, Hands-Free Car Kit which came with specific harnesses for my car make and model. The other one is a bit flashier here:
http://www.abtelectronics.com/scripts/site/site_product.php3?source=froogle&id=24115
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icemantwilight said:
Since there are no official cradles for the tytn I'm looking at knocking up a solution like yours, charge in the car and gps nav through the stereo (was hoping for auto stereo mute on call but that's a pipe dream) and doing it without the 2 expensive adapters and car charger my jasjam didn't have.
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Auto stereo mute works fine if you use WMP or even with TCPMP if you uncheck the "play music in background" option

Hermes Car Adapter with power and audio

Does anyone know of a well built Hermes car kit that supplies power to the unit while also providing a connection to the stereo audio output so that it can be sent to the car audio system? I've been searching xda-dev, ebay and various online stores but unable to find something that does stereo audio.
This would be great for music in the car while not draining the battery.
Hi.
Yeah we have one here in Denmark. Look at thisĀ“one:
http://tele-online.dk/product.asp?product=15556&sub=68
maybe you should ask the dealer where he buys this and if theres a european distributor selling them
I'm not sure about the Dopod, however my att 8525 came with a usb y-cable so that it can charge and use the headphones at the same time....with a usb to 1/8th inch adapter you'd be streamin!...
pockePC techs HandsFree & Charging Adapter
I bought one off these and it works great. I use it in my MDX with a cassette audio adapter so the sound comes through the car speakers, the mic picks up perfect with no feedback. I use PPC tech for my adapter for my wizard, they definitely know what they are doing. Check them out.
HandsFree & Charging Adapter
Does this offer that ability to charge with a standard car charger? Do you plug you standard car charger into the female bin, while the other usb being plugged into the phone? And the 3.5 mm just accepts any audio device with 3.5 mm connector?

Any way to connect headphones to Phone

Hi,
Is there anything like a converter or something that I can connect my headphones to my phone ? I'm not talking about bluetooth, I mean a cable connection to a typical headphone or to a regular speaker
Thanks
http://forum.xda-developers.com/showthread.php?t=280439
Got mine from eBay, works fine for a few bucks plus time to ship. Radioshack may have an adapter as well.
thanks guys
I found one on ebay, it seems useful. I'm going to try that I think. It's cheaper and seems like more comfortable.
I picked up the 3 in 1 adapter, which lets me plug in headphones a car charger and still use my mic from my headset.
Sounds like useless adapter, however
I plug the stereo output of the adapter into the line input of my car stereo, the OEM headset mic gets clipped to my seatbelt and the car charger gets plugged in.
Turns my Tytn into a mobil office and car theater system. I get to hear the audio from calls going through the 6.1 speakers in my car as well as play all my MP3's and videos through the phone.
The adapter was only about 15 bucks IIRC.

[Q] Do I have a bad car dock?

I purchased the official Atrix car dock about a month ago before going on vacation. The dock has worked great and was indispensable for using the navigation in our rental car.
But the audio connection on the USB power cable has never worked for providing any audio from the device. My Bluetooth was disabled, but no audio (of any kind - music, calls, etc) has ever come out of the line out/headphone connection on the car dock cable. The only way I can get audio to the car is by connecting the cable to the headphone jack on the phone itself.
I've done a lot of searches for people who have had this issue, and the one or two instances I found have not provided me a solution.
I recently remembered that the multimedia dock I purchased also has a headphone jack on it, so I tried to see if this output works the way it's supposed to. I started playing music through the internal speaker, then connected some headphones to the output jack on the dock. The music immediately stopped coming out of the internal speaker and was audible on the headphones. Disconnecting the headphones sent the audio back to the internal speaker.
So it seems that the USB audio on the phone works and can re-direct audio to the dock audio jack when it's available. But the car dock audio jack still does not function. Do I have a bad car dock? Should I send it back, or is there something else I should try?
Sounds to me, like either your dock or cable coming out of dock is no good. My car dock throws audio out of connection on usb plug with no issue.
Sent from my MB860 using XDA App
I returned the old cradle and cable to Motorola. The new replacement has arrived, and the audio is working perfectly. Thanks for the help.

mp3 stereo dock....dumb question perhaps?

Hello....If i am using a samsung captivate or htc evo etc,......Can i plug these phones into an ihome? or any dock stations made for ipods but have an AUX?
Cant i plug in my micorub into the usb or whatever?
if not, what speakers exist, when im outside and wanna hear music louder, id like to plug my phone into a radio, one taht is somewhat portable and can be plugged into ac outlet.
thanks for any help? or any ebay links would be great too.
i got my own answer and bought a male to male 3.5mm adapter which i can then plug into the aux.
I have been looking into the bluetooth models myself

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