Using Phone as Speaker Through 3.5mm Line In? - Windows Mobile Development and Hacking General

I'm not sure this is the right place or whether something like this has been done before...
I have a WM 6.5.3 device with a 3.5mm headphone/mic jack. It obviously accepts input through that jack and I was wondering if I could somehow connect my mp3 player to my phone using a male - male 3.5mm cable and an app that will play everything that comes through the mic input through the integrated phone speakers? I see that my headphones equipped with a mic have an extra contact, so I would probably just have to cut them open and splice a male 3.5mm connector onto the end that usually has the mic/earbuds.

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Help Me figure this one out

Ok guys.. what i would like to do is get the sound of the himalaya on my car stereo so i can watch a movie with perfect car sound instead of the internal speaker of the himalaya.
1st option: An FM Modulator that wil be connected through the 2,5mm jack but the problem here is i have to modify the cradle so the 2,5mm jack will fit.
2nd option: maybe a bluetoothdevice that is connected to the car stereo??
any other option??
i would like some opinions on how to deal with this one..
what i did was used a 2.5 to 3.5 jack converter (got it from hk but should be available elsewhere). then i used a an audio in-out jack (with a 3.5mm jack); plugged it into the now converted 3.5mm xda jack, then plugged the output into the audio input jack of my car stereo and there you go. almost similar to the system used for plugging in your ipod to the car's sound system. i use a bt headset so that takes of the calls. when the phone rings the music stops and the call comes in. butttttt....sometimes the media player doesn't come back on and i have to hit the play button. sure the unit is mounted but it can be a drag sometimes...
do u have some pics?
how did u solve the cradle problem blocking the 2,5mm jack input?
i am so curious!!
i'll have to take pics then. but the car mount i use is not officially for an xda unit; i just went and bought one when i was in hk for a business trip. the cradle is basic; clamps on the unit from the sides using those spring-action arms with anti-slip rubber-like material (?). the underside is supported by two stems...giving it the appearance of being a 2-legged fork. the supports are small enough so that they don't block the slot for plugging in the car charger and the microphone jack. the cradle is then supported from the back; which leads to the arm connected to the windshield via a heavy duty suction cup....well so far it hasn't fallen off... from there the 2.5 to 3.5 plug converter is around...an inch and half long maybe...the "male" 2.5 end plugs into the xda's "female" jack and at the other end is the "female" plug. the audio input/output connectors are basically similar to your vcr to tv connection; one plugs into the female 3.5 plug (connected to the xda) and the other simply plugs into the car stereo. not complicated at all if you ask me...and you don't really need to have the cradle / holder since you can just leave your unit on one of the shelves under the dash. again, similar to how the ipods are plugged into the car stereo...
ok i have a pretty good idea what it looks like but the problem i have is that my carholder/cradle is blocking the female jack connector so i think im gonna drill out a hole.
i bought me a 2,5 mm jack that i have to solder but the jack itself is too big so now i need an L shaped 2,5mm jack similar to the headphones of the himalaya...
thx for the input m8 (lol) stil a pic would be nice

Connecting phone to a car stereo

Hi all
I have a MDA compact which I wish to connect to my car stereo as a handsfree unit. I have an auxiliary input for my stereo.
Is it possible just to purchase a 2.5 to 3.5mm lead for this? I have a gut feeling the mic won't work - please help? Is it possible to buy such a lead with a built in mic?
Thanks
Carl
Hi, I used to have a XDAII which I connected to the auxillary port on my car stereo, just like you suggest. It worked perfectly. When using the phone, the caller's voice woudl come out of the car speakers and the mic was powerful enough to pick up my voice even though the unit was mounted on my windscreen.
Unfortuntely, both the Wizard and the Exec automatically disable the mic when you plug into the headphone socket. Not sure about the MDA comact. Sorry couldn't offer more advice on your particular device, but I hope my experiences help.
monster said:
Unfortuntely, both the Wizard and the Exec automatically disable the mic when you plug into the headphone socket. Not sure about the MDA comact.
Click to expand...
Click to collapse
I do have the same setup. I can confirm U the mic still work after U plug in the adapter but I normally use a BT headset when I am in the car.
OK, so I assume that if I purchase a 2.5mm to 3.5mm lead, the mic should work?
carlreader said:
OK, so I assume that if I purchase a 2.5mm to 3.5mm lead, the mic should work?
Click to expand...
Click to collapse
Yes. 8)
OK - did some work on this.
I decided to cut the earplugs off of the supplied headset, and attach a 3.5mm socket.
I now have a custom XDA mini lead
All works, however volume from car stereo speakers is extremely low. Any ideas? (Yes, I have checked car volume, phone volume and headphone volume!)
Cheers
Carl
jackleung said:
monster said:
Unfortuntely, both the Wizard and the Exec automatically disable the mic when you plug into the headphone socket. Not sure about the MDA comact.
Click to expand...
Click to collapse
I do have the same setup. I can confirm U the mic still work after U plug in the adapter but I normally use a BT headset when I am in the car.
Click to expand...
Click to collapse
Hi Jackleung, my mic is being diabled, and i am beginning to think that I may not have the right connector. I have a standard 3.5mm connecting the exec. Can you let me know how you have wired your device with the type of connector? You may be able to solve a longstanding problem of mine.
Thanks in advance.
I found my mic was cancelled with the Mini, hence the custom cable.
hope this helps!
monster said:
Hi Jackleung, my mic is being diabled, and i am beginning to think that I may not have the right connector. I have a standard 3.5mm connecting the exec. Can you let me know how you have wired your device with the type of connector? You may be able to solve a longstanding problem of mine.
Thanks in advance.
Click to expand...
Click to collapse
I think my adapter is just a standard 2.5mm to 3.5mm converter. I tried 2 different adapter (one from Radio shack and the other one from ebay: http://cgi.ebay.com/USB-CABLE-headp...ryZ15040QQssPageNameZWD1VQQrdZ1QQcmdZViewItem)
Both are working for me (I will try again today and confirm U tomorrow), therefore I think yr problem is in the exec hardware itself.
To Carl,
Yr setup will not work since yr supplied headset adapter has at least 4 connection on the plug compare to 3 on the standard one. The extra connection is for the mic. If U cut the wire like this:
<---- X --- mic+volumn control ------ ear plugs
Then U can no longer use the mic w/ the custom wire. But if U:
<------- mic+volumn control -- X ---- ear plugs
then the mic on yr mic+volumn control will pick up the voice
hi jackleung
Thanks for the reply - the lead was cut after the mic but before the earphones.
This was because a standard lead with a 2.5 / 3.5mm adaptor didnt work.
My only issue now is the low volume!
Cheers
Carl
I tried it on my Imate Jam again. My mic on the Jam still works (eg: Voice Command via Cyberon Voice Dial. So do phone conversation) even I use my 2.5mm/3.5mm adapter to connection it to my car stereo.
Hi,
I did the same for me and a friend of mine with a Univer..er - Jasjar and connected this to an FM transmitter - We have excellent sound quality, volume and the you can still answer calls by pressing the Mic Button
Frikkie
(If you are gonna be late - dont rush, else someone else and YOU will be cross)
check connections?
I have done exactly what you did, put a 3.5mm socket on the end of the included handsfree cable.. volume is fine, and i regularly connect it to the aux in the car, and multiple sets of headphone/speakers...
The best suggestion to your volume problem is to try again.. i know i had issue with the stereo channels getting screwed up (and even combined at one point) and it was just trial and error getting the connections clean..
You have to ensure that both the shaft and tip connectors on the socket are grounded to the shared ground on the circuit board.. otherwise the audio will probably be less than perfect.. check for dodgy soldering/connection.. coz i can assure you that your theory does work!
Dan
There is another topic on this here.
The person from there uses:
http://www.expansys-usa.com/product.asp?code=PPCPADPT02
which has two 3.5mm plugs.
Description: It has a 2.5mm plug at one end (this plugs into the PocketPC) and two 3.5mm sockets at the other end (into which you plug your 3.5mm headset or headphones).
My question was: could I put a standard 3.5 car kit mic into this 3.5 headset jack (the one with the mic)? Would the mic work if I plug it into a headset jack?
I assume the other one (headphones = stereo only) I will plug it directly into my car auxiliary via a 3.5mm to RCA cable, right?

Connecting Vario III via the AUX connector in the car.

I have an Audi A3, which has an AUX port to connect an MP3 player, so that it plays over the car radio/speakers. (FYI: The AUX port is wired into the CD changer of the Car radio).
I was wondering if a cable exists that can connect to the VARIO (tilt) into aux, so when the phone rings it plays through the speakers. Im hoping that the mic on the phone is good enough to pick up my voice which it sits in the cradle.
I could also use this link up to play mp3s on the tilt as well.
Get a 11-pin miniUSB male to 3.5mm male cable. Search on ebay or google.
you need something like this
http://www.pocketpctechs.com/main~unit~ATT_Tilt-974~area~view_cart~item~LSP-DUOPRO01.htm
fyi, if you just get a mini usb to 3.5mm plug, the mic on the phone will mute itself once you plug that 3.5mm adapter plug, so you can hear the caller but no matter how loud you scream, the other party won't be able to hear you.
I had the same idea before, tested it and it didn't work. That's why I had to order this adapter from ppctech.
Thanks for the replies, both are very helpful.

scheme elettric microphone and speakers

Hello!
I enabled the aux input of my car radio and wire a cable jacks.
the problem is that when I get a call from my htc hd2, the sound is heard from the speakers but does not work the microphone for conversation because the hd2 course off the microphone of the device active because the headset with microphone.
Is there any way to wire the cable jack (4 pins) and attach a microphone to the cable itself? Some might suggest a scheme electricity?
thanks!
:sorry my bad english
In theory it should work as long as you can get the components and wire the cable correctly. whether or not your mouth would be too far from the microphone might be an issue,
Unfortunately, if I connect the phone jack, hd2 excludes the microphon base to activate the headset that is built, then the conversation can not happen, but I feel he did not hear anything
should understand how the microphone is connected to the headphone series
spippo said:
Hello!
I enabled the aux input of my car radio and wire a cable jacks.
the problem is that when I get a call from my htc hd2, the sound is heard from the speakers but does not work the microphone for conversation because the hd2 course off the microphone of the device active because the headset with microphone.
Is there any way to wire the cable jack (4 pins) and attach a microphone to the cable itself? Some might suggest a scheme electricity?
thanks!
:sorry my bad english
Click to expand...
Click to collapse
Depending on where your phone is, you could use a regular 3.5 mm male to male extension going from your radio to the phone. I have mine set up like that and the mic on the phone itself is powerful enough to pick up your voice. I ran a 10ft cable(3.5 mm male to male) from the radio,under the instrument panel, up the side of the door in the molding of the windshield to the sunvisor where my phone is clipped to the visor by the clip on the case. It works fine but you have to adjust the volume between your phone and the radio to find the best combination to avoid major feedback so the caller doesn't hear his own voice echoing in the background. I can't post links yet but if you go to youtube and search "iphone handsfree iphone in car setup" you will see how I did my iphone but I now have the same setup with the Hd2.

[Q] hands free idea for the car

Ive been pondering this and thought i'd post it here for your general feedback.
the plug for the hearphone/mic headset that comes with the device is a triple pole 3.5mm jack - same thing used by video camcorders into the phono adaptors.
On the back of my car stereo unit ive an Aux in which would be the red/white plugs of this cable for the audio feed. This is generally how i'd plug my phone in to listen to my music.
Now with the 3rd wite (yellow) i was thinking if i used a small PC Mic (3.5mm jack) and get a patch cable made to connect this to a male phono would this work? it'd also give me the ability to hear my phone throughthe car, and a lengthy cable i can hide and place a mic in the car leaving a simple 3.5mm jack to plug into

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