3.5mm to Bluetooth A2DP for in car? - Hardware Hacking General

I'm looking for a 3.5mm to bluetooth A2DP adapter for use in my car. I've found a ton, however all of the ones I'm finding you have to turn it on whenever you want to use it. I'm looking for one that will automatically turn on and automatically connect to my phone when it receives power (when I turn on my car).
Does one exist? Preferably under $50.
**edit - Can't find a way to delete the post, but I found the Miccus Mini-jack RX and according to it's manual, it will auto turn on and pair when power is given. Woohoo! Has good reviews on Amazon.

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Bluetooth audio, but not to a headset...

Hi all,
I use a THB carkit integrated into my stereo. It uses usb connector to power the pda but bluetooth to trick the pda into thinking a headset is in use so calls are handled by the carkit. Aside the problem of bluetooth intermittantly turning off, is there a way to forward all audio (especially tomtom) to the "headset" carkit?
I've searched the forum and there is plenty of info on bluetooth headsets and how the button on them can be used to start audio via bluetooth, but the carkit doesn't use any buttons. I would be happy enough if there is an app to run whenever I want audio over bluetooth, anything really to sort this out.
Cheers all.
Anybody have any suggestions pleeease?
well sounds like your in a tight spot. I believe that all the audio programs use the button to initiate the audio transfer. Perhaps if you look at the reg edits for these programs you might be able to toggle it with some other input from the phone.....
There is a free program called BTAudio that you could try
tried that program but it relies on pressing the voicedial button on a headset which I don't have.

motorola headset s-9

I paired the head set both as a wireless stereo and as hand free and it works good except 1 thing:
while I press the button on the headset to make a voice call with voice tag (which works perfectly for me with others simple headsets) ,I can't hear the beep telling me to say the tag and also i can't hear the confirmation of the tag I said.
The system IS working and the phone dials what I said,but i can't confirm while the pda is not in front of me
If I disable the "wireless stereo", I can hear the beep and the confirmation.
Does anyone know someting ?
Besides this the sound of the headset is amazing
Voicecall
Yes, I experienced the same thing with my WE-COM (cheap ) stereo bluetooth headset. If i want to make the headset activate the voicecall i have to first turn off the wireless stereo in the bluetooth connection screen. So, i leave the wireless stereo turned off most of the time. Only when i want to sit back and enjoy wireless stereo music or watch a movie using bluetooth, i turn on the wireless stereo.
I wish it can be automatic but i can't find any other ways other than manually turning the wireless stereo off and on acording to my needs.
Since my bluetooth is inexpensive, I am happy that both the wireless function and the phone function works. The shop person who sold me the bluetooth didn't know how to get the phone function of the headset to work with my u1000 at first. I had to fiddle with the pairing and setting up for quite a while at his shop. Suddenly it hit me that the pda was confused about the headset having 2 different functions and it doesn't know how to automatically switch between the 2 functions by itself. So i just have to use the bluetooth setup screen to command the pda to respond to just one of the function at a time. And it worked! So i bought the headset. And the shop was happy to make his sale.

Bluetooth Audio over car kit

Not sure if this is the correct place to post this
I have just upgraded from a kaiser to the HD2. I have a Bury take and talk car kit installed so have replace the Kaiser cradle with the Universal Bluetooth cradle. The phone pairs ok, the volume is low over the car speakers but this was the same for the kaiser and I have found that bury sell an amplifier to boost the volume. So far so good.
My question now is is there any way for routing music and gps instructions over the bluetooth connection. Registry hack, app or whatever. I cant see that it cant be done. I have read bits on other threads / forums about routing to Bluetooth headsets, and im thinking this is similar.
Anyone got any good ideas? I havent installed or messed with much yet so am willing to try stuff and hard reset if required
If the carkit doubles as a bluetooth headset and no more, it will only support the protocol which enables you to place calls with the carkit, and route the audio and mic for the call over bluetooth. If you want an audio connection, be sure your carkit allows for an A2DP connection - then you will get music and possibly also voice streams via bluetooth out of your car speakers.

Using Bluetooth headset and headphone socket

Sorry if this has been asked before, but i had a look and couldn't find what i'm after.
Basically, my HD2 connects automatically to my car's bluetooth handsfree kit. My handsfree kit doesn't support A2DP so I still need to use the headphone socket to listen to music from the phone through the stereo. However, if the phone has paired with the car, the headphone socket doesn't work and the stereo thinks I'm getting a call when i try and play music.
Is there any way I can enable music through the headphone socket while the phone is paired to the handsfree kit?
Thanks!
anyone? it's really annoying!
This may not be the answer your looking for but have you tried cutting out the middle man i.e. the BT handsfree kit. Just use your phone and it'll patch a call thru the headphones and cancel the music.
Saves removing the headphones each time you get a call.
In BT manager, when you select your car device, what services do you have? If there's a stereo one, untick it.
Nope, just the headset profile. I've also tried turning on/off the option to send system sounds over bluetooth, but no joy. It just seems that as soon as it connects to the car, the headphone socket is disabled.....
OK, so I think the problem was either the tape adapter I was trying to use was playing up or during my messing about with settings I changed something.... either way it appears to be ok with headphones so should be fine with a line in

Two concurrent bluetooth connections, possible?

I want to buy Bluetooth receiver for my car that I will plug into the the AUX input to listen to music, something like Jabra A120s, google it.
Thing is the car already has bluetooth handsfree setup which I actively use (but it doesn't support AD2P).
Would this setup work for me?
It should work. My Toyota is a hands free profile device and I also have a Samsung headset that operates in A2DP mode. The only thing I have to be careful with is to disable hands free mode from the Samsung configuration in Android. If I don't the car and the headset constantly knock each other off and it can be a real pain to stop the tug of war short of turning something off.

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