Handsfree question

[guessmee]

Hi all,

Greetings, I'm new to this forum. I have some questions here.

Does anyone know how to get the audio connector/plug/jack for Nokia handsfree (for Nokia 8310/8210/8250/3210/3310/etc)?
I tried to find it at some electronics shops, they only have the 2-rings/stripes 2.5mm audio connector but NOT the 3-rings like the connector used for many Nokia handsfree.

I'm also wondering can I use the 2-rings connector? Because I try to plug the 2-rings connector to my Nokia 8310 and the phone detects as a handsfreee has been connected.

I'm also wondering what are the consequences (for the mobile phone) if I use the 2-rings type connector in case I finally still can't find any 3-ring type connector? Do I need to put any additional electronic components before I can make my custom-made handsfree?

And finally, does anyone has the *simple* diagrams/documents/URLs for making nokia handsfree? I mean the handsfree used for the types of phones mentioned above. I tried to search the web, and I still can't find any.

Thank you in advance.


Edy

[Thanh]

Look at the attached file....
Regards
Thanh

[wwanthony]

Do you have no concern for which section of this forum you decide to post to?

Why do you think there are seperate sections, all neatly categorized?

This shows a massive disrespect posting in any given section willy nilly. Your post was purely Hardware related and should have been put in the Hardware section!!

[Thanh]

@wwanthony

Oh come on..... how can he as a newbie know that his question is a "hardware" question? It is after all regarding his 8310, and in my opinion this thread is in the perfectly correct section.
If everybody does like you suggest, then every thread "how to unlock/flash/modd etc" should go into "software"...... and what are the other sections for? To ask for covers? No, also "hardware". Don't tie it tooo narrow.

Kind regards...
Thanh

[guessmee]

Hi wwanthony,
I'm really sorry for that. I never mean to mix-up my posting. I choose this channel because it's titled "65XX / 82xx / 83xx / 88xx / 89XX" and my mobile phone is Nokia 8310 which I think should be matched with "83xx". :-)

Sorry 'bout that, next time I'll try to be more careful to choose which channel I should post.




Originally posted by wwanthony
Do you have no concern for which section of this forum you decide to post to?

Why do you think there are seperate sections, all neatly categorized?

This shows a massive disrespect posting in any given section willy nilly. Your post was purely Hardware related and should have been put in the Hardware section!!

[guessmee]

Thanks Thanh, I'll have a look at it. The main problem right now is I can't find the 3-ring 2.5mm audio plug; I can find only the 2-ring type. Do you think I can use 2-ring audio plug?

First, I just want to mention that I have no electronics background at all. Here's what I want to do. I just want to connect my 8310 radio to my computer :-)
I guess I can do that by connecting the handsfree slot on the phone and on the other end I plug it to my soundcard mic/line-in. But like I said before, I can't find the 3-ring plug used for Nokia handsfree. :-(


Edy



Originally posted by Thanh
Look at the attached file....
Regards
Thanh

[Thanh]

Hello :)
I think those 4-pin ("3-ring") connectors are next-to-impossible to get..... the easiest is to take one of those cheap no-name handsfree sets which have only one earpiece (cost next to nothing) and cut off that earpiece. The cable then solder to a mono (one ring) 3.5 mm plug which fits into that line-in of your soundcard. The blank wire is the (-) and the coloured one is (+). Remember that the radio in a 8310 is only monophonic! You won't get stereo anyway, so if you use a stereo plug one side will be dead. Better use mono, but be sure to connect the (+) and (-) to the correct pins on the plug (+) is the tip, and (-) is the "body", the longer one.
If you use a "two-ring" plug, you risk damaging your phone by shorting something, better don't even try it. It might work when you somehow plug it in only 80% or half or whatever, but avoid that risk, it's not worth it.
About the soundcard, use the "line" in and not the "mic" as the "mic" takes only a VERY low voltage, where the phone gives off a much bigger one... you could eventually damage either the soundcard or the phone.
Good luck soldering.........
your Thanh

PS @wwanthony
sorry to bother you again, i don't want to be offensive, but i've had a look in the "hardware" section... it is all about "phone repairs"........ this one is more something like "accessoires" question... no such section (yet) :)

[wwanthony]

"how to unlock/flash/modd etc" should NOT be posted at all!!!

This can be found out by searching the forum and reading past posts.

You will find that all subjects can fit into a category, which common sense will inform you of. Unfortunately common sense isnt always too 'common'.

Before sourcing the will to argue, step back and think carefully before engaging yourself. (tip from anger management class) ;)

[Thanh]

Hi again :)
At least i did not need any anger management classes yet, and i am sure i won't need 'em. I am doing things logically, most of the time, that is.
We could now discuss this over a few hundred posts, or we quickly open a new section for "8310 handsfree questions" and put the thread in there, that YOU will be happy. Or we ban all newbies from using the forum alltogether and then it can't happen in the first place.
There are people who want to ask a quick question without taking hours to read all available old threads, and i found out myself that using the "search" function does not always lead to the desired results. having searched for "7250 content" the engine turned up with "0 results" but at the same time i was in a thread where TWO posts had such a topic. Now, the guy had a question regards a 8310, and he put it into the 8xxx section. Perfect. His phone ain't broken, so "hardware" would have been the wrong place.
I am myself active here since just a few months, and i got a lot of help from the nice people here, and in turn i was able to help others. My very first question was "how to flash a 5130 with a m-bus cable" which i put in the 5xxx-section. Without readuing older threads! We all started some time, just some people seem to forget the time when THEY asked the first question.
And by the way, i think i have read almost all of the threads and replies in the entire forum over time, so i myself know where to post and what to ask, or where to get answers first. But this guy did his first post just like me a few months ago. I hope i could help him, and i hope that you shift one gear down and have a little respect for newbies.
Sign me
Thanh

[wwanthony]

The handsfree question applies to all nokias, not just 8310.
The handsfree connector is hardware and should have been posted in hardware section, especially when diagrams are asked for.

All the other rant in your post is irrelevant.
you should have read my tip ;)

before posting your pointless reply it may be advisory to 'thanh' a bong or two.

[guessmee]

Hi Thanh, thanks for your explanation. I find it very very useful for me (as a newbie in both this forum and electronics).


Yeah, that's actually the same idea I have here. I think I'll use one of my spare not-so-good handsfree to get the 3-ring connector.

I have further question here (if you don't mind). Sure so far (before the 8310 era) I always think that the audio produced from Nokia handsfree is 'monophonic'. But since the release of Nokia 8310 I'm a little bit doubt about that. When I use the original 8310 handsfree (with two ear pieces) supplied in the box, I could enjoy (according to me) a reasonable good quality of audio comes from both ear pieces. That's why I think it might be nice to connect it to PC soundcard.

Before your explanation (that just playing with the handsfree I could damage either my phone or the soundcard -- thanks for warning me about that, I didn't know if you didn't tell me), I had an idea, how if I split either the (+) or (-) into two to connect it with 2-ring 3.5mm audio connector (the end which will be connected to the soundcard)? I'm wondering how can original's 8310 handsfree can produce (heard like) stereo sound?


Edy



Originally posted by Thanh
Hello :)
I think those 4-pin ("3-ring") connectors are next-to-impossible to get..... the easiest is to take one of those cheap no-name handsfree sets which have only one earpiece (cost next to nothing) and cut off that earpiece. The cable then solder to a mono (one ring) 3.5 mm plug which fits into that line-in of your soundcard. The blank wire is the (-) and the coloured one is (+). Remember that the radio in a 8310 is only monophonic! You won't get stereo anyway, so if you use a stereo plug one side will be dead. Better use mono, but be sure to connect the (+) and (-) to the correct pins on the plug (+) is the tip, and (-) is the "body", the longer one.

[Thanh]

hi again :)
Yes, you get sound on both sides... but it is still monophonic. See, a one-ear handsfre uses the same connector as your two-ear model..... both are "Thre ring" type. The two earpieces are connected to the same wires coming from the phone. It gives you a "feeling" of stereophony, but here isn't. Ever listened to the radio of a 6610 or 7210? Those are "true" stereo.
Sure you can use a stereo plug to connect with the soundcard, but you have to solder one wire from the earpiece (+) to both (+) connections on the plug, which is the tip and the middle ones, the last one ("body") being (-). It is easier to use a mono plug to get the same effect :)
In both ways, sound will come from both speakers, and you will be able to "record" mp3 from the phone, provided you have such software. But it will be monophonic, two sides, yes, but one channel. If you open a small transistor radio (the type that got only one speaker) and you connect a second speaker to the original one, you will also hear both working, yet still it isn't stereo. That's how Nokia does with that headset, they simply connect two speakers (earpieces) to one cable. Test it! Use that wo-ear headset from your 8310 on a 8250 or a 3310... you will also hear the person on the other end on both sides.
Hope this was of help.....
Kind regards...
your Thanh

[guessmee]

Hi again Thanh, :-)

I already made it. I cut a nokia handsfree speaker and connect it to a 3.5mm stereo connector. I tuned my 8310 on and finally I can hear my 8310 radio from my PC!!! Thank you very much for your assitance, Thanh.

If I can tell here, the only problem is the one that already expected. :) The sound quality is not good enough (at least I think the sound quality is different (worse) from my 8310 original handsfree). The most obvious ones are the bass & treble beat; I can't hear them.
I go to Windows volume control (the speaker icon located on the right corner screen) and I adjust the balance for the line-in. If I move the balance to all left or all right, then I can get better beat for bass & treble (almost like I heard from handsfree), but the problem is only 1 speaker 'speaks' :(

Hmmm... I guess here I might need some extra electronic components to 'amplify' the output produced from handsfree slot. But unfortunately I don't know much about electronics.

BTW, thank you very much Thanh!


Edy

[Thanh]

Hello :)
If you have the problem as you said, you maybe got the (+) and (-) swapped. Try to swap the two wires coming from the phone (handsfree) in the stereo plug you used. Or, as i told you, use a mono plug! It avoids this sort of problem by making it much easier to solder, and the effect is the same (besides, mono plugs are cheaper, too).
If you have the phone's radio on, avoid setting it to a too high volume. The phone's amplifier is tuned to drive a 16- or 32 ohm load, where the input of your soundcard provides 600-1000 ohm. To make this thing perfect, you would need a matching transformer in between, but it works also well without one. Try it out!
Best regards....
your Thanh

[NokDoc]

Mr. Wwanthony,

To me too, there's not such a problem about posting to an incorrect forum.

Sure, U are free to have Ur own ideas.

But once it comes to a sort of confrontation, U all should be wiser and think it just isn't worth it.

We had a good team here, with all of U guys together.

Don't wanna see it split.

NokDoc

[wwanthony]

hi NokDoc,
of course I dont mind where anybody posts, why should it bother me? this isnt my forum afterall.
If people see someone pointing out a post is inproperly placed then they will be more inclined to try and put their posts in the right place, which in my opinion makes this forum much tidier.

One little post to inform people to think about where they post is not such a bad idea is it? its not like I rant on about it.

It just ticked me off when thahn thought he had a right to comment on my post, especially when he was talking nonsense.

I wouldnt class the posts on this thread as of a confrontational nature, just as a heated debate; just happened it was about nonesense.

[guessmee]

Hello Thanh :-),
Actually the first time I connect the cable, I accidentally swapped the (+) and (-) because the cables from the handsfree don't use the same color as the diagram you gave me. When I plug the swapped cables, I can't hear any sound at all. Then I swapped the cable again, then I can get the sound from 8310 radio to my PC soundcard.
Also, I only tuned the radio volume only about a half of its maximum.

Yeahhh... I guess there's not enough power produced from the phone to the soundcard. Furthermore, I guess the power produced from the phone is only enough to power the handsfree speakers; that's why I can enjoy a good sound quality from handsfree (the bass & trebele beat) compared to soundcard (CMIIW because I have no electronics background!!! :) ).

About your suggestion to use mono plug for soundcard connector, I'll try it. :-)

Regards,
Edy



Originally posted by Thanh
Hello :)
If you have the problem as you said, you maybe got the (+) and (-) swapped. Try to swap the two wires coming from the phone (handsfree) in the stereo plug you used. Or, as i told you, use a mono plug! It avoids this sort of problem by making it much easier to solder, and the effect is the same (besides, mono plugs are cheaper, too).
If you have the phone's radio on, avoid setting it to a too high volume.
Best regards....
your Thanh

[damjang]

Originally posted by Thanh
Look at the attached file....
Regards
Thanh

There is something wrong with button diagram. I don't measure it but I think that this diagram should be like attached.

Correct me if I'm wrong :D

damjang

[Thanh]

Hello damjang :)
Hmm i opened that image, but apart from A, B, C and D i can't see anything on it........
I did measure the button of my cheapo handsfree with a multimeter, but maybe there are different ones around.... I had two available, and both were the same result/measures. I needed to do that when i "adapted" my original 6510-handsfree (two-ear-mono) to the Pop-Port connector of a one-ear-cheapo so that i can enjoy the radio of the 6610 on both ears, even mono, still sounds way better :)
Best regards...
Thanh

[damjang]

Hello Thanth
Oh sorry, the gif is trasparent :( I attach a good one.

I mean that in your diagram the microphone capsule is not connected to the phone when the button is pressed and also not when the button is not pressed! Seems that there is an error...

regards
damjang