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TRRS Pinouts for Desire-like proper headphones without issues of direct plugging in

Sup all would anyone have the actual TRRS pinouts for the audio jack for the desire I would like to make a up a lead that will allow me to plug an ordinary pair of headphones in using a proper TRRS jack instead of a TRS jack. thanks. There are definately issues plugging in a headphone directly or maybe it is my unit faulty?
Edited, this topic will show you the best way to connect your headphones to your desire as some people will experiance problems with pluggin in normal 3.5 jack plug headphones, this is due to the desire using a trrs socket for the microphone instead of a trs socket that normal headphones use.

pretty sure it is:
tip - left audio
ring 1 (closest to tip) - right audio
ring 2 - data of some kind
shield - ground
Hope this helps

cheers for that, im having some peeps tell me that i can just plug in an ordinary pair of headphones into the phone without any ill effects, i am concerned that i will have a problem because headphones are trs jacks and the desire has the trrs 3.5 jack. can anyone confirm any details on this for me please

nah you can use a normal TRS 3.5mm jack with no problems. I guess that when you use a normal TRS jack then shield and ring 2 on the connector are both connected to shield on the jack so it adjusts the software accordingly. But yea, no problems.

cheers for that
edited, we have since discovered that this is not the case, please read the entire topic for the correct way to connect headphones to the desire.

standard 3,5 mm (TRS) headphones DO CAUSE ISSUES
Was about to resend my HTC Desire, because it randomly called, skipped music stopped the music, FM-radio freeze etc. from the moment I connected my high-end 3,5mm headphone (TRS type: 3 contacts).
No issues with the standard headset delivered with the HTC Desire (TRRS type: 3,5mm 4 contacts).
So, you might need a TRS -> TRRS adapter.
Anyone with other experiences???

Basically what I have found is that many of the normal headphones are not working correctly because it is a trrs socket that is used. To me this would mean that normal headphones shouldnt be used, I have tried various headphones but there are definately issues with them,
The main issue I was having was as you have said above and also the base wasnt right with them
I have since bought this
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130384433476&ssPageName=STRK:MEWNX:IT
which arrive today and when I am using this in conjunction with my headphones I now have the proper base to the set and NONE of the problems I was having when i was plugging them into the phone directly......... they just didnt sound right, now using griffin smarttalk this i can definately tell the difference now especially in the base, also this unit will lower the volume and allow you to make a call automatically with built in mike, clicking it twice doesnt skip the track suggested instead it will ring the last number dialled in the phone so a bonus actually to me
the straight adapters ie trrs to trs are very nearly the same price as this if not more expensive so i would recommend this all day long to you. At £9.75 delivered bargain m8, bought late evening on the 20th arrived this morning what more can i say, but if you are having issues it is definately in my eyes because of the difference in the trrs socket to the trs socket,
the base is fantastic on this phone now, before it was terrible, now i just need an equaliser to remove some of it

When you speak of "normal headphones", are you referring to simple 3.5 TRS headphones, or headphones with a mic ?
Cause if the majority of the headphones (without mic I mean) won't properly work with the Desire, it's a major flaw according to me.

I confirm: TRS (3 contacts, without mic) do not work...
...I tried 4 different 3,5mm stereo headsets (TRS type, 3 pole, without mic). NONE of them worked correctly (phenomenons as described above).
When you plug a 3 pole TRS headphone in the Desire 4 pole TRRS headphone output, a short circuit is generated between the first 2 internal contacts (seen from connector input: ground + control line).
I suspect that the Desire firmware cannot detect/handle this situation, and so it causes random actions (prev, next, call numbers, stop, play, ....)
I suspect that this issue could be solved with a firmware upgrade....

there is no way they would release hardware with a 3.5mm socket that you cant plug a 3.5mm jack into right? the firmware does detect when you use a TRS instead of a TRRS. You get a different icon on your notification bar for each of them. As ive said before my AKG's have worked perfectly so far and have shown none of the problems listed above.

This afternoon I quickly tested my Seinheiser PX100 headphones with a friend's desire and the Htc music player.
It worked flawlessly. Volume was good and it didn't play/pause/skipped tracks.
As I said it was a really quick test so I can't say for sure that everything's was okay.
Nonetheless apparently a lot of people experienced problems with numerous headphones. To me it's really a shame you can't even plug ANY 3.5mm jack headphones with the desire ...
I hope a software update could fix this.

I also had this problem when connecting my Desire to my car radio using an standard 3.5mm AUX cable. Will this cable solve my problem or will my car radio not be able to recognize a 4 pole cable?
http://cgi.ebay.nl/3-5mm-Male-TRRS-...erAccess_RL&hash=item5d28c530c1#ht_1252wt_939

I think this might be an issue of certain cables not making a full connection due to the shape of the case surrounding the socket. I had no problems with my headphones, sound was good and loud enough although I could see how it might not be loud enough for some.
I did start having issues when I plugged the aux lead in my car into the phone. The lead has a large shroud that obstructed the plug from being plugged all the way in. This gave the same problems as described in other posts, skipping tracks and also crashing the music software at one point.
I replaced the lead with another that had a better fit and the problems went away but I did notice when I leaned against the lead while it was playing music in my car it started skipping track again.
I wonder what HTC have to say about this....

DHel01 said:
I also had this problem when connecting my Desire to my car radio using an standard 3.5mm AUX cable. Will this cable solve my problem or will my car radio not be able to recognize a 4 pole cable?
http://cgi.ebay.nl/3-5mm-Male-TRRS-...erAccess_RL&hash=item5d28c530c1#ht_1252wt_939
Click to expand...
Click to collapse
I solved those problems with this lead- i dont think the one your showing will work for you
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=220593400305
they come from china etc however only 5 days to arrive from ordering.
and I now enjoy trouble free music. I also have ordered the Griffin Smart Talk so i can listen to my headphones and be able to answer the phone as well however I didnt want to use it for plugging into a car stereo etc etc so i wanted a straight lead conversion.
Just a quick warning the first lead i ordered from this person was faulty, however i had also ordered 3 other leads from the same person as an after thought which were all perfect.. as they are only pennies it is worth ordering one or two spare for redundancy purposes. I decided to order 3 as backups more in case i broke one and the person stopped selling them etc etc
These leads will allow you to connect the htc to any other source including external speakers which didnt work when putting them in normally but did work when i used this cable in conjunction with it.
this cable is a trrs to trs jack plug and is used to convert a 4 pin socket to a 3 pin socket jack plug.

I've been using a pair of JVC Gummy Air on my Desire since I got it, not a single problem.

Re: TRRS Pinouts for Desire
I've used some headphones, and 2 different aux connector for the cars and all 3 work absolutely perfectly. No issues at all.
Sent from my HTC Desire

I have been using my Yuin PK3 earbuds for music since I got my Desire and it has been working without any problems.

TheOriginalKi said:
I've been using a pair of JVC Gummy Air on my Desire since I got it, not a single problem.
Click to expand...
Click to collapse
Oh yeah and I've also hooked it into the tv via a standard audio cable!

Not sure what you guys are talking about but my AIAIAI headset works fine with the Desire
Mic working too!
aiaiai.dk/headsets/tracks-headsets/tracks-headset-black.html
^those

Sennheiser PXC 250 with NR, no problems

Car dock = Desktop dock; so audio out possible?

I amazed I'm the first one to notice this, so I'm probably not. I took apart my car dock and found the PCB inside is almost identical to the desktop dock (see photos). The upshot here is that I would strongly guess that you could easily solder on parts to either one and add things like:
- An audio out jack to the car dock (!)
- Volume up/down switches to the desktop dock
- Speakers (small ones!) to the desktop dock
- An external mic to the desktop dock
Most of that doesn't seem so great, but adding an audio jack to the car dock would be fantastic.
Pictures 1 & 2 are the desktop dock, 3 & 4 are the car dock.
Notice the unused pads on the car dock PCB (pic #4) for a headphone jack at bottom left.
Notice the pads for the speakers in pic #2 (desktop dock) at the top.
Also in in pic #2 you can see where the volume rocker would connect at bottom left and mic at bottom center.
Finally the tiny circle near my thumb in pic #4 looks to be a micro antenna jack, hard to tell for sure.
JB

That's incredibly lame of google to not put the audio out when it's the same pcb.

James Bell said:
I amazed I'm the first one to notice this, so I'm probably not.
Click to expand...
Click to collapse
Good find.
Along a vaguely similar vain, I suggested over here a method of using a Desk Dock as Car AUX input. It has certain benefits over non OEM accessories that do similar. I am in the process if fitting a USB power supply to my car. Once that is done I will fit the Desk Dock semi permanent out of site as a BT AUX in feed.
Of course getting an AUX jack in the Car Dock would be much better.

next thing would be prying off the metal cover and see if they have the same circuitry inside. Then if yes all you have to do is solder a 3.5 female jack on it and voila'...

fan or heatsink?
cool beans!
i wonder if you could install a copper backing plate connected to a heatsink (like ones you can buy for ram) instead of the plastic piece to help with the high heat issues some are having...hmm...
seems like there's enough room

Dude, love how you tore the desktop dock apart on your desk and the car dock in your car.

Since the pcb's are the same size, couldn't you swap them out, cut a hole in the case and then you'd have audio out on the car dock?
=D

@muncheese
Yah I think so. Problem is it'd recognize it as the desktop dock...errr and you'd lose the speakers and volume rocker from the car dock.
My motivation to solder on an old headphone jack is low - my '01 325 doesn't have an aux in to plug into it! Maybe I'll do it anyway if I can find the right jack.
@SPAS79
I started to pry off the metal top but ran out of time to fool with it. I want to look up the chips and see if any of their outputs can be used to trigger the mute line on my stereo.

Well the speaker wouldnt matter since it'll be going through the car audio system, same for the volume, just control the car stereo volume. =)

I took off the metal cover on the desktop dock, picture below.
There's a daughtercard called an NF2301. Made by nFore and (poorly) described here:
http://www.nforetek.com/products.htm

Adding an Aux out on the Car Dock will place it on the Dock itself.
Ideally for neatness, it would be on the base near the suction cup. I suppose you could run a short cable along the chrome arm and situate the jack on the base near the USB outlet.

Chrome arm should be hollow as it already has power running through it. Might be enough room to run a small cable through it.

This is very exciting
Keep us updated on what happens with you!
Bump!

this is fantastic news. I actually have an audio socket left over from my desk dock audio switch project. If someone wants to buy me another car dock or can prove that soldering on a jack will work then i'd be willing to rip it apart and do what google SHOULD have done in the first place!

I cant wait for some chinese company to make this for the nexus:
http://www.dealextreme.com/details.dx/sku.19747
I have one currently that I used with my iphone and while it felt cheap.. It did everything:
held my iphone in place in the car
charged and did audio out with single sync cable
audio out can be routed either to the 3.5mm aux line AND the built in FM transmitter
remote (which stopped working after 1 week)
Mostly I like the fact that it mounted/charged/audio-out my iphone all at once with 1 cable and was only $12 shipped.. I would love something similar for my nexus

If all the talk about the 2.2 update enabling the FM transmitter is true. It would explain why the car dock has no audio out.
And if Google keeps the Nexus One updates on the same track it should be arriving next Tuesday.
First Tuesday of every month has had a blog update and the second of update of each month has been on or around the last Wednesday.

sweltzin said:
If all the talk about the 2.2 update enabling the FM transmitter is true. It would explain why the car dock has no audio out.
Click to expand...
Click to collapse
I have seen no talk of enabling an FM TRANSMITTER. Just rumours of them enabling an FM receiver, which would be no solution for the car dock.

Even if it did have an FM transmitter, I would prefer the audio out on the dock. Less hassle, better sound.

logger said:
I have seen no talk of enabling an FM TRANSMITTER. Just rumours of them enabling an FM receiver, which would be no solution for the car dock.
Click to expand...
Click to collapse
It's both.

muncheese said:
It's both.
Click to expand...
Click to collapse
Thats a fairly vague comment.
Yeah the radio is a transceiver. Thats fairly obvious. It is after all a cellphone.
But are you saying Google will be activating the FM transmitter in such a way as it will transmit audio to a car FM radio? Or are you just saying the FM radio fitted to the phone is a transceiver.

Desire FM Transmitter?

Hi Guys, Does anyone know of an FM Transmitter for the Desire? Preferably not Bluetooth......
I would like to be able to play music from the Desire on my car stero but the stero doesn't have any ability to plug anything in and I have seen FM transmitters for other phones and would love one however I also use a bluetooth handsfree car kit (not built into the car) so ideally a USB one would be perfect but I am struggling to find one online.
Thanks
Max

You mean like this?
http://www.amazon.co.uk/LUPO-Portab...2?ie=UTF8&s=electronics&qid=1279204004&sr=8-2
That'll just plug into the headphone jack and there are hundreds like 'em around. You can get one as cheap as £3.

You mean like this?
http://www.amazon.co.uk/LUPO-Portab...2?ie=UTF8&s=electronics&qid=1279204004&sr=8-2
That'll just plug into the headphone jack and there are hundreds like 'em around. You can get one as cheap as £3.

Yes like that
I actually found one late last night like that. My mistake was searching for a HTC Desire FM Transmitter rather then just a 'generic' one that works in a headphone port
Thanks. Think I will be getting one of them...

does anyone know if http://cgi.ebay.co.uk/Car-FM-Transmitter-HTC-Hero-T-Mobile-MyTouch-3G-/130410380854?cmd=ViewItem&pt=UK_Mobiles_Accessories_RL&hash=item1e5d107e36 will work on the desire??

Honestly I would avoid the cheap hong kong ones. The aerial in the transmitter is tiny, and you'll get bags of static and hiss. I've wasted money on these before.
Look to spend at least £15 our I promise you'll be disappointed with the sound quality.
The Griffin iTrip auto universal plus is good. Powers from your cigarette lighter so no drop in gain from batteries going flat, and the plug for the cigarette lighter socket has a usb charging output so you can still charge your phone whilst having the fm transmitter plugged in.
There are hundreds of types or there, but my experience is; you but cheap, you buy twice.
Sent from my HTC Desire using XDA App

Although as far as I know/read, the htc desire chip can also transmit FM. We just need an app for that I guess.

doesn't the bluetooth/fm radio chip in the desire also have a fm transmitter function like in the n900? an app/driver to unlock this function would be awesome

I've been using the following one for quite a while, as I was happy with it.
http://www.dealextreme.com/details.dx/sku.625
Now I have an aux input on my car stereo.

[Q] Is there any way I can connect my phone to my car's speakers?

I'm don't want to make a lot of music CDs for my car, I was wondering if there is any way I can connect my phone's mp3 player to the car speakers?

Does your car have an aux input? (typically two inputs - white and red), or possibly even jack input.

No idea :|
I only know of that "input" that fires cigaretes where you can connect the mini usb charger for the desire
I have a peugeot 307
Edit: nvm i checked on the net and it seems i have neither of those inputs. Just a simple CD player and fm radio.
Any other way?

motorola rokr t505

lvnatic said:
No idea :|
I only know of that "input" that fires cigaretes where you can connect the mini usb charger for the desire
I have a peugeot 307
Edit: nvm i checked on the net and it seems i have neither of those inputs. Just a simple CD player and fm radio.
Any other way?
Click to expand...
Click to collapse
so, do you not have a cigarette lighter input? you really should do lol. what car do you have?
you have a few options though.
if you don't have an aux input or anything like a headphone jack sort of input then you can get Belkin FM transmitter. I've just done a quick amazon search and one has come up specifically for desire, which could be good - one good review on amazon. However, I've never tried it.
Specifically for Desire: http://www.amazon.co.uk/Generation-...GTAI/ref=sr_1_1?ie=UTF8&qid=1292787497&sr=8-1
If not, try the Belkin FM transmitters. There's a few different types, mainly for iPod/iPhone which are called iTrips. But obviously, don't get that if its for your Desire. Just search for Belkin FM Transmitter and make sure it has a headphone jack not an iPhone/iPod connection.
Word of warning, FM Transmitters work on the principle that you set the frequency on the 'gadget' then tune your FM Radio into that frequency on the car. Best way to do it, out of past use, is to have it right next to the radio and use the volume controls on the phone more than on the radio itself.
If you don't have a cigarette lighter, you can get one without it which will work, but not as well.
Hope this helps.

lvnatic said:
No idea :|
I only know of that "input" that fires cigaretes where you can connect the mini usb charger for the desire
I have a peugeot 307
Edit: nvm i checked on the net and it seems i have neither of those inputs. Just a simple CD player and fm radio.
Any other way?
Click to expand...
Click to collapse
Bluetooth carkit with aux inputs is the way to go mate (3.5mm plug and iphone plug are pretty much standard these days), whilst you're at it get a suction screen mount too. Permanent handsfree!!

Buy anew stereo that's got Bluetooth streaming.
Sent from my HTC Desire using XDA App

paprkut said:
Buy anew stereo that's got Bluetooth streaming.
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
A stereo with aux-in slot should be more than enough tho (bt ones are a little more expensive), you can grab one with less than 80$.

cheap solution
my car player has AUX in therefore i just connect a 3.5mm Stereo Audio Cable Male-Male (1-Meter) cable and connect the player and my HTC Desire. Its so far good and clear.

I had a Peugeot 307 and it had an AUX in 3.5 socket, it was in the center of the car between the seats on the back of the console bit not on the stereo it's self.

Rew64 said:
I had a Peugeot 307 and it had an AUX in 3.5 socket, it was in the center of the car between the seats on the back of the console bit not on the stereo it's self.
Click to expand...
Click to collapse
Same as I @ Opel Insignia
Sent from my HTC Desire using XDA App

FM wireless transmitter
Hi there
Depending in which country you are you could by a small FM transmitter that you plug into the Desire and listen through your car FM radio.
They are permitted in the UK, but not in many other countries. I got mine from TK Maxx... (hahaa!) for £9.99 and the sound in my car is almost as good as my cd player!
Go to Amazon, Ebay... theres plenty there!

My head unit unit syncs with my phone via bluetooth so I play music that way.
On previous phones/stereos I had an rca to 3.5mm cable that I ran from the phone to thee aux input on the back of the head unit.
Sent from my HTC Desire using XDA App

Car bluetooth speaker

Anyone recommend a good car blue tooth speaker? My work van does not have blue tooth and so I bought a Jabra speaker for about $40 last year and it is horrible. Just looking for some help finding a new one, thanks
Sent from my XT897 using xda app-developers app

Do you have an aux in that you can plug into? If so, I have the miccus mini jack rx and love it. It's small and if you use the usb power cable, it turns on and off with the vehicle (assuming your outlet turns on and off)

vonrandy said:
Do you have an aux in that you can plug into? If so, I have the miccus mini jack rx and love it. It's small and if you use the usb power cable, it turns on and off with the vehicle (assuming your outlet turns on and off)
Click to expand...
Click to collapse
nope, no aux plug-in either. Good thought though

Might want to consider just replacing the headset/deck in the van.
Nevermind, I didn't see the word "work" before van. Why not just grab one of these?
http://www.walmart.com/ip/16480663?...1=g&wl2=&wl3=21486607510&wl4=&wl5=pla&veh=sem

The JBL flip bluetooth speaker is pretty impressive. Only thing I dont like about it is theres no forward and reverse button for changing tracks.

This won't help the OP, but along with the thought Kitsune was going to interject, if anyone is looking for a new head unit for their car that has BT hands-free calling & audio streaming, I can highly recommend the relatively new Kenwood KDC-X597 model. Just had one of these installed last week and it pairs & works with the Q nicely (even though you won't find it listed on the compatibility list on Kenwood's website). Easily the best stereo overall I've had in a vehicle.