Dear group,

I'm posting here because I'm hoping you guys of anyone can solve my
problem. My component supplier can't, Nokia can't (or won't) and
without it, I'm missing the functionality of my phone.

I have a Nokia 6500 Classic mobile/cellular phone. It has a mini USB
connector to plug in both the charger or accessories such as a stereo
headset. The supplied Nokia headset works fine, but is simply not a
very good design.

I tried eBay for several different third party connectors and have now
tried four, including eventually Nokia's own AD-55 mini USB adapter
and none of them work. When you plug headphones into them, they all
say "Connected device takes too much power - please disconnect".

I would be willing to pay someone to reverse engineer an existing set
of compatible Nokia official headphones and wire up a working 3.5mm
stereo to mini USB adapter. I can also supply one of the third party
connectors which do not work so that you could further diagnose the
error with these adapters.

I am in the UK and can pay by PayPal. I also have some documentation
from Nokia on how compatible headsets should be wired, but it's not
clear enough for a non-expert such as myself to understand. I am
desperate for help - without it, I can't listen to music

My email is schnide followed by the company name BTinternet and then
the shortened version of the word "company", all with dots in between.

Anyone?

Schnide

In article
,
wrote:
I have a Nokia 6500 Classic mobile/cellular phone. It has a mini USB
connector to plug in both the charger or accessories such as a stereo
headset. The supplied Nokia headset works fine, but is simply not a
very good design.

I tried eBay for several different third party connectors and have now
tried four, including eventually Nokia's own AD-55 mini USB adapter
and none of them work. When you plug headphones into them, they all
say "Connected device takes too much power - please disconnect".

Only guessing, but USB spec doesn't include analogue signals - just digits
and DC. So again I'd guess the Nokia unit includes electronics.

--
*Cover me. I'm changing lanes.

Dave Plowman London SW
To e-mail, change noise into sound.

On 21 May, 12:59, "Dave Plowman (News)" wrote:
In article
,
* wrote:

I have a Nokia 6500 Classic mobile/cellular phone. *It has a mini USB
connector to plug in both the charger or accessories such as a stereo
headset. *The supplied Nokia headset works fine, but is simply not a
very good design.
I tried eBay for several different third party connectors and have now
tried four, including eventually Nokia's own AD-55 mini USB adapter
and none of them work. *When you plug headphones into them, they all
say "Connected device takes too much power - please disconnect".

Only guessing, but USB spec doesn't include analogue signals - just digits
and DC. So again I'd guess the Nokia unit includes electronics.

--
*Cover me. *I'm changing lanes.

* * Dave Plowman * * * * * * * * London SW
* * * * * * * * * To e-mail, change noise into sound.

You're right Dave - the Nokia unit which works does include
electronics. There's a microphone piece as well as a dial to change
volume, and a button to advance track number.

Does this document..

http://sw.nokia.com/id/596e3800-879f..._v 1_0_en.pdf

..clarify for your whether any mini-USB attachment with a 3.5mm stereo
adapter would require some electronics in-between to convert a digital
to analogue signal? That's assuming I've understood what you suggest
the problem might be.

In article
,
wrote:
On 21 May, 12:59, "Dave Plowman (News)" wrote:
In article
,
wrote:

I have a Nokia 6500 Classic mobile/cellular phone. It has a mini
USB connector to plug in both the charger or accessories such as a
stereo headset. The supplied Nokia headset works fine, but is
simply not a very good design. I tried eBay for several different
third party connectors and have now tried four, including eventually
Nokia's own AD-55 mini USB adapter and none of them work. When you
plug headphones into them, they all say "Connected device takes too
much power - please disconnect".

Only guessing, but USB spec doesn't include analogue signals - just
digits and DC. So again I'd guess the Nokia unit includes electronics.

You're right Dave - the Nokia unit which works does include electronics.
There's a microphone piece as well as a dial to change volume, and a
button to advance track number.

Does this document..

http://sw.nokia.com/id/596e3800-879f..._v 1_0_en.pdf

..clarify for your whether any mini-USB attachment with a 3.5mm stereo
adapter would require some electronics in-between to convert a digital
to analogue signal? That's assuming I've understood what you suggest
the problem might be.

Yes. It could be you could modify the Nokia one to use headphones of your
choice - ie using the Nokia electronics. But that PDF doesn't give the
spec of the headphones they supply, and the power amp may not be suitable
for standard ones.

It might be possible to source a USB input headphone amp which will drive
conventional ones. Although it might be bigger than the phone itself ;-)

--
*In "Casablanca", Humphrey Bogart never said "Play it again, Sam" *

Dave Plowman London SW
To e-mail, change noise into sound.

On 21 May, 16:29, "Dave Plowman (News)" wrote:
In article
,
* wrote:





On 21 May, 12:59, "Dave Plowman (News)" wrote:
In article
,
* wrote:

I have a Nokia 6500 Classic mobile/cellular phone. *It has a mini
USB connector to plug in both the charger or accessories such as a
stereo headset. *The supplied Nokia headset works fine, but is
simply not a very good design. I tried eBay for several different
third party connectors and have now tried four, including eventually
Nokia's own AD-55 mini USB adapter and none of them work. *When you
plug headphones into them, they all say "Connected device takes too
much power - please disconnect".

Only guessing, but USB spec doesn't include analogue signals - just
digits and DC. So again I'd guess the Nokia unit includes electronics.
You're right Dave - the Nokia unit which works does include electronics.
*There's a microphone piece as well as a dial to change volume, and a
button to advance track number.
Does this document..

http://sw.nokia.com/id/596e3800-879f...f2d4/Series_40...

..clarify for your whether any mini-USB attachment with a 3.5mm stereo
adapter would require some electronics in-between to convert a digital
to analogue signal? *That's assuming I've understood what you suggest
the problem might be.

Yes. It could be you could modify the Nokia one to use headphones of your
choice - ie using the Nokia electronics. But that PDF doesn't give the
spec of the headphones they supply, and the power amp may not be suitable
for standard ones.

It might be possible to source a USB input headphone amp which will drive
conventional ones. Although it might be bigger than the phone itself ;-)

--
*In "Casablanca", Humphrey Bogart never said "Play it again, Sam" *

* * Dave Plowman * * * * * * * * London SW
* * * * * * * * * To e-mail, change noise into sound.- Hide quoted text -

- Show quoted text -

Dave,

Thank you for all this, it's incredibly helpful. I had considered the
possiblity of adapting an existing set of Nokia headphones to have a
3.5mm jack coming out of the electronics unit instead of the earbuds
themselves, but this would be slightly messy and ultimately result in
a lot of wire.

As you appear to be something of an expert, at least compared to
myself, do you know of anywhere who offers a service that would
rehouse the section of the electronics piece that converts to the
digital signal in small plastic casing with a 3.5mm jack for me?

Despite my poor soldering skills, I'd do this myself, except when I
took my official Nokia headset apart it had what appeared to be fiber
optic wiring instead of anything I could take a soldering iron too. I
imagine this is standard now to allow thinner leads, but doesn't help
me solve my problem.

Many thanks as always, myself and others are hanging on a solution -
schnide

In article
,
wrote:
It could be you could modify the Nokia one to use headphones of your
choice - ie using the Nokia electronics. But that PDF doesn't give the
spec of the headphones they supply, and the power amp may not be
suitable for standard ones.

It might be possible to source a USB input headphone amp which will
drive conventional ones. Although it might be bigger than the phone
itself ;-)

Dave,

Thank you for all this, it's incredibly helpful. I had considered the
possiblity of adapting an existing set of Nokia headphones to have a
3.5mm jack coming out of the electronics unit instead of the earbuds
themselves, but this would be slightly messy and ultimately result in a
lot of wire.

I'm afraid that would be the price to be paid. It's really not practical
to make things as a one off as small as the factory can.

As you appear to be something of an expert,

Heh heh - enthusiastic amateur would be nearer it. With *some* expertise
in *some* things.

at least compared to myself,
do you know of anywhere who offers a service that would rehouse the
section of the electronics piece that converts to the digital signal in
small plastic casing with a 3.5mm jack for me?

Afraid I don't. It's the sort of thing I might well attempt for myself -
but not a stranger. And don't really know of anywhere providing such a
service - which would be very costly anyway, due to the time involved for
any one off.

Despite my poor soldering skills, I'd do this myself, except when I took
my official Nokia headset apart it had what appeared to be fiber optic
wiring instead of anything I could take a soldering iron too. I imagine
this is standard now to allow thinner leads, but doesn't help me solve
my problem.

It's probably a mixture of fibres and copper to provide extreme
flexibility and strength. You normally terminate this sort of flex with a
crimped joint.

Many thanks as always, myself and others are hanging on a solution -

If many want this I'm surprised an accessory maker hasn't supplied what
you need.

--
*Indian Driver - Smoke signals only*

Dave Plowman London SW
To e-mail, change noise into sound.

On Wed, 21 May 2008 08:15:15 -0700 (PDT), put
finger to keyboard and composed:

On 21 May, 12:59, "Dave Plowman (News)" wrote:
In article
,
* wrote:

I have a Nokia 6500 Classic mobile/cellular phone. *It has a mini USB
connector to plug in both the charger or accessories such as a stereo
headset. *The supplied Nokia headset works fine, but is simply not a
very good design.
I tried eBay for several different third party connectors and have now
tried four, including eventually Nokia's own AD-55 mini USB adapter
and none of them work. *When you plug headphones into them, they all
say "Connected device takes too much power - please disconnect".

Only guessing, but USB spec doesn't include analogue signals - just digits
and DC. So again I'd guess the Nokia unit includes electronics.

--
*Cover me. *I'm changing lanes.

* * Dave Plowman * * * * * * * * London SW
* * * * * * * * * To e-mail, change noise into sound.

You're right Dave - the Nokia unit which works does include
electronics. There's a microphone piece as well as a dial to change
volume, and a button to advance track number.

Does this document..

http://sw.nokia.com/id/596e3800-879f..._v 1_0_en.pdf

..clarify for your whether any mini-USB attachment with a 3.5mm stereo
adapter would require some electronics in-between to convert a digital
to analogue signal? That's assuming I've understood what you suggest
the problem might be.

You may be able to find your cable pinouts he
http://pinouts.ru/connector/4_pin_US...onnector.shtml
http://pinouts.ru/cgi-bin/view_filt....nokia&lang=eng

To convince yourself that your adapter is a digital device, you could
connect it to your PC with an appropriate cable and then use
Microsoft's UVCView.exe or usbview.exe to display the device
characteristics. I'm assuming that your adapter would not be a host.
If it is a host, then the above won't work.

I'm using Windows 98SE. In Control Panel's Device Manager, under the
Power properties for the USB Root Hub, I see that my USB flash drive
reports that it requires 100mA max current. I'm not sure, but I
suspect that Win XP may be able to report the actual current draw.

UVCView and Usbview both report that my USB phone is bus powered and
requires 200mA MaxPower. These utilities may also be able to tell you
who is the real manufacturer of your devices.

If you can't find the above utilities, contact me via email.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

On 22 May, 22:27, Franc Zabkar wrote:
On Wed, 21 May 2008 08:15:15 -0700 (PDT), put
finger to keyboard and composed:





On 21 May, 12:59, "Dave Plowman (News)" wrote:
In article
,
* wrote:

I have a Nokia 6500 Classic mobile/cellular phone. *It has a mini USB
connector to plug in both the charger or accessories such as a stereo
headset. *The supplied Nokia headset works fine, but is simply not a
very good design.
I tried eBay for several different third party connectors and have now
tried four, including eventually Nokia's own AD-55 mini USB adapter
and none of them work. *When you plug headphones into them, they all
say "Connected device takes too much power - please disconnect".

Only guessing, but USB spec doesn't include analogue signals - just digits
and DC. So again I'd guess the Nokia unit includes electronics.

--
*Cover me. *I'm changing lanes.

* * Dave Plowman * * * * * * * * London SW
* * * * * * * * * To e-mail, change noise into sound.

You're right Dave - the Nokia unit which works does include
electronics. *There's a microphone piece as well as a dial to change
volume, and a button to advance track number.

Does this document..

http://sw.nokia.com/id/596e3800-879f...f2d4/Series_40...

..clarify for your whether any mini-USB attachment with a 3.5mm stereo
adapter would require some electronics in-between to convert a digital
to analogue signal? *That's assuming I've understood what you suggest
the problem might be.

You may be able to find your cable pinouts hehttp://pinouts.ru/connector/4_pin_US...nokia&lang=eng

To convince yourself that your adapter is a digital device, you could
connect it to your PC with an appropriate cable and then use
Microsoft's UVCView.exe or usbview.exe to display the device
characteristics. I'm assuming that your adapter would not be a host.
If it is a host, then the above won't work.

I'm using Windows 98SE. In Control Panel's Device Manager, under the
Power properties for the USB Root Hub, I see that my USB flash drive
reports that it requires 100mA max current. I'm not sure, but I
suspect that Win XP may be able to report the actual current draw.

UVCView and Usbview both report that my USB phone is bus powered and
requires 200mA MaxPower. These utilities may also be able to tell you
who is the real manufacturer of your devices.

If you can't find the above utilities, contact me via email.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.- Hide quoted text -

- Show quoted text -

Thanks Franc - this looks helpful. I'll try it tonight and will
report my findings back here.

As an aside, I'm fairly sure from what I've read on Nokia
documentation that the Nokia 6500 Classic can do both a host and non-
host mode. That might not be important, but I've mentioned it just in
case.

On 23 May, 10:34, wrote:
On 22 May, 22:27, Franc Zabkar wrote:



On Wed, 21 May 2008 08:15:15 -0700 (PDT), put
finger to keyboard and composed:

On 21 May, 12:59, "Dave Plowman (News)" wrote:
In article
,
wrote:

I have aNokia6500Classicmobile/cellular phone. It has a mini USB
connector to plug in both the charger or accessories such as a stereo
headset. The suppliedNokiaheadset works fine, but is simply not a
very good design.
I tried eBay for several different third party connectors and have now
tried four, including eventuallyNokia'sown AD-55 mini USB adapter
and none of them work. When you plug headphones into them, they all
say "Connected device takes too much power - please disconnect".

Only guessing, but USB spec doesn't include analogue signals - just digits
and DC. So again I'd guess theNokiaunit includes electronics.

--
*Cover me. I'm changing lanes.

Dave Plowman London SW
To e-mail, change noise into sound.

You're right Dave - theNokiaunit which works does include
electronics. There's a microphone piece as well as a dial to change
volume, and a button to advance track number.

Does this document..

http://sw.nokia.com/id/596e3800-879f...f2d4/Series_40...

..clarify for your whether any mini-USB attachment with a 3.5mm stereo
adapter would require some electronics in-between to convert a digital
to analogue signal? That's assuming I've understood what you suggest
the problem might be.

You may be able to find your cable pinouts hehttp://pinouts.ru/connector/4_pin_US...onnector.shtml...

To convince yourself that your adapter is a digital device, you could
connect it to your PC with an appropriate cable and then use
Microsoft's UVCView.exe or usbview.exe to display the device
characteristics. I'm assuming that your adapter would not be a host.
If it is a host, then the above won't work.

I'm using Windows 98SE. In Control Panel's Device Manager, under the
Power properties for the USB Root Hub, I see that my USB flash drive
reports that it requires 100mA max current. I'm not sure, but I
suspect that Win XP may be able to report the actual current draw.

UVCView and Usbview both report that my USB phone is bus powered and
requires 200mA MaxPower. These utilities may also be able to tell you
who is the real manufacturer of your devices.

If you can't find the above utilities, contact me via email.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.- Hide quoted text -

- Show quoted text -

Thanks Franc - this looks helpful. I'll try it tonight and will
report my findings back here.

As an aside, I'm fairly sure from what I've read onNokia
documentation that theNokia6500Classiccan do both a host and non-
host mode. That might not be important, but I've mentioned it just in
case.

Okay, well here are what the two programs reported. Does this give
any indication to a solution?

http://img155.imageshack.us/img155/5...uvcviewcz9.jpg
http://img267.imageshack.us/img267/5...usbviewdg7.jpg

All help or suggestions gratefully appreciated,

schnide

On Sun, 25 May 2008 07:02:18 -0700 (PDT), put
finger to keyboard and composed:

As an aside, I'm fairly sure from what I've read onNokia
documentation that theNokia6500Classiccan do both a host and non-
host mode. That might not be important, but I've mentioned it just in
case.

Okay, well here are what the two programs reported. Does this give
any indication to a solution?

http://img155.imageshack.us/img155/5...uvcviewcz9.jpg
http://img267.imageshack.us/img267/5...usbviewdg7.jpg

All help or suggestions gratefully appreciated,

schnide

AFAICS, the only pertinent info is that your phone's USB port, when
configured as a client, is externally powered and can draw up to
500mA, which is USB's limit. I was thinking that you could connect
your audio adapter to your PC as a client, if indeed that is how it is
designed, and then interrogate it in similar fashion. If the PC shows
that your audio device demands more than 100mA, then that would be a
problem according to Nokia's documentation.

For host configurations, Nokia's documentation states that ...

"The Nokia 6500 Classic and Nokia 8800 Arte mobile phones, which are
based on the Series 40 platform, support USB audio devices. These
mobile phones will be referred to throughout the document as the
Series 40 USB hosts."

"The Series 40 USB host can sustain current up to 100 mA. It is
recommended to draw as little current as possible to increase playback
or speaking times. Based on recommendations by Nokia, an amount of 100
mW should not be exceeded during operation at maximum volume."

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

On 26 May, 21:08, Franc Zabkar wrote:
On Sun, 25 May 2008 07:02:18 -0700 (PDT), put
finger to keyboard and composed:

As an aside, I'm fairly sure from what I've read onNokia
documentation that theNokia6500Classiccan do both a host and non-
host mode. *That might not be important, but I've mentioned it just in
case.

Okay, well here are what the two programs reported. *Does this give
any indication to a solution?

http://img155.imageshack.us/img155/5...uvcviewcz9.jpg
http://img267.imageshack.us/img267/5...usbviewdg7.jpg

All help or suggestions gratefully appreciated,

schnide

AFAICS, the only pertinent info is that your phone's USB port, when
configured as a client, is externally powered and can draw up to
500mA, which is USB's limit. I was thinking that you could connect
your audio adapter to your PC as a client, if indeed that is how it is
designed, and then interrogate it in similar fashion. If the PC shows
that your audio device demands more than 100mA, then that would be a
problem according to Nokia's documentation.

For host configurations, Nokia's documentation states that ...

"The Nokia 6500 Classic and Nokia 8800 Arte mobile phones, which are
based on the Series 40 platform, support USB audio devices. These
mobile phones will be referred to throughout the document as the
Series 40 USB hosts."

"The Series 40 USB host can sustain current up to 100 mA. It is
recommended to draw as little current as possible to increase playback
or speaking times. Based on recommendations by Nokia, an amount of 100
mW should not be exceeded during operation at maximum volume."

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

Thanks for your continued help Franc - Nokia themselves, meanwhile,
are so far coming back with nothing but attempts to try and fob me
off.

So if I understand this right, I have my headphones I want to plug in,
and the mini-USB to 3.5mm audio adapters bought from eBay. Are you
suggesting I get a mini-USB to standard USB converter, plug the audio
adapter into that, the headphones into *that*, and then run the two
programs again - posting my findings?

On 27 May, 14:36, wrote:
On 26 May, 21:08, Franc Zabkar wrote:



On Sun, 25 May 2008 07:02:18 -0700 (PDT), put
finger to keyboard and composed:

As an aside, I'm fairly sure from what I've read onNokia
documentation that theNokia6500Classiccan do both a host and non-
host mode. That might not be important, but I've mentioned it just in
case.

Okay, well here are what the two programs reported. Does this give
any indication to a solution?

http://img155.imageshack.us/img155/5...uvcviewcz9.jpg
http://img267.imageshack.us/img267/5...usbviewdg7.jpg

All help or suggestions gratefully appreciated,

schnide

AFAICS, the only pertinent info is that your phone's USB port, when
configured as a client, is externally powered and can draw up to
500mA, which is USB's limit. I was thinking that you could connect
your audio adapter to your PC as a client, if indeed that is how it is
designed, and then interrogate it in similar fashion. If the PC shows
that your audio device demands more than 100mA, then that would be a
problem according to Nokia's documentation.

For host configurations, Nokia's documentation states that ...

"The Nokia 6500 Classic and Nokia 8800 Arte mobile phones, which are
based on the Series 40 platform, support USB audio devices. These
mobile phones will be referred to throughout the document as the
Series 40 USB hosts."

"The Series 40 USB host can sustain current up to 100 mA. It is
recommended to draw as little current as possible to increase playback
or speaking times. Based on recommendations by Nokia, an amount of 100
mW should not be exceeded during operation at maximum volume."

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

Thanks for your continued help Franc - Nokia themselves, meanwhile,
are so far coming back with nothing but attempts to try and fob me
off.

So if I understand this right, I have my headphones I want to plug in,
and the mini-USB to 3.5mm audio adapters bought from eBay. Are you
suggesting I get a mini-USB to standard USB converter, plug the audio
adapter into that, the headphones into *that*, and then run the two
programs again - posting my findings?

*bump*

On Tue, 27 May 2008 06:36:31 -0700 (PDT), put
finger to keyboard and composed:

So if I understand this right, I have my headphones I want to plug in,
and the mini-USB to 3.5mm audio adapters bought from eBay. Are you
suggesting I get a mini-USB to standard USB converter, plug the audio
adapter into that, the headphones into *that*, and then run the two
programs again - posting my findings?

All I'm suggesting is that you somehow determine the current demand of
each of your devices, with and without the headphones attached. The
only way I know how, other than to intercept the cable with a
multimeter, is to query the device's properties using your PC. To this
end you will need a suitable cable.

For example, you can see the maximum current requirement of your
device in Win XP by going to Device Manager and querying your Root
Hub's Power Properties. It should list the power requirements of each
attached USB peripheral. If you can determine the vendor and product
IDs for your peripheral, then these numbers may reflect the chip
rather than the device manufacturer, in which case you may be able to
find a datasheet with an application diagram ...

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.