Micro Usb Accesories

djtiek · #1 (**permalink**) 10-22-2008, 11:18 PM

I'm desperately trying to find a micro usb adapter that i can charge the phone thru either micro usb or mini usb AND also have a 3.5mm headphone out.

so you can listen to the mp3 player thru a patch cable or fm transmitter in your car and also charge the phone at the same time.

fruitless google and amazon searching has lead me here.
anyone got an answer?

jcrick · #2 (**permalink**) 10-23-2008, 02:42 PM

Try looking here: http://www.securemalls.com/cellphone...oducts_id=2182

The page references the 800W but clearly states the adapter has no microphone connection, so taking a call will not work. But it does say that is is compatible with the Treo 800w.

As a side note I am looking for a way to modify my 800w's charging cradle so I can listen to music, videos, etc, while working at my desk but not sure how the treo is aware when a headphone is plugged in. (If you notice when you plug in the headphone while playing audio, it takes a few seconds to shut off the speaker and redirect the audio feed to the headset.)

There are five wires coming from the micro USB-B plug on my cradle; Red, White, Green, Silver (uninsulated), and Black. The Silver and Black are tied together into the circuit board (to ground). My guess is the Treo audio circuit detects the impedance/voltage drop across the headphone coil and does the switching electronically.

I would suspect if the adapter I listed above meets the USB 2.0 electrical specs then it should work on the Treo 800w as well. However, I have read forums where the response is that these do not work:
http://discussion.treocentral.com/sh...d.php?t=172670

If you want to try this adapter, this is the cheapest I have found so far:
http://www.wirelessground.com/mircousbhfadap.html

Hope this helps.

djtiek · #3 (**permalink**) 10-23-2008, 06:02 PM

I totally appreciate the response and such a detailed one at that!
Thank you!

That gives me a solution to part of my problem. If i can't find anything else then that adapter will definitely help!

I would like to have an adapter that you're also able to charge the phone as well as listen to music thru a 3.5mm jack.

But if that doesn't exist yet, then c'est la vie!

If anyone knows of such a beast, then please let us know!
I can't be the only one with this sort of need.

Thanks again!