Talk:Analogue wired Headset Nokia
sorry, complete nonsense. The pinout for nokia in first half of this article is exactly compatible to GTA01/2.
common counting is from top to base
sometimes reverse, from base to top
Though Nokia is known to use the Nokia-wired-connectivity standard usually, wich is
which is obviously *not* compatible to Neo (see schematics!)
button is shorting mic to gnd, so whenever mic is working, button should too.
There are no high voltages (except the known DL_GSM bug of Neo), so I don't understand this warning.
The difference between 32 and 40 Ohms is negligable, for sure it's "safe". Varying loudness probably due to different sensitividy (dBm/mW) of the headphone-speakers.
I'd like to simply delete the whole article, if it wasn't for the rework instruction which I can't check right now.
anyway, it's obvious:
nokia -----> Neo
base --GND-> base
3 -- mic --> 1/tip
2 -- right-> 2
1/tip -left> 3
so swapping 1 and 3 should fix nokia hs for neo
/joerg 2008-09-07 05:59:10
I don't see why the first half of the article is wrong. If you have to swap pins 1 and 3, it's incompatible. Maybe i explained it too difficult. I've simplified it.
With high voltage i mean the ~Vcc that is applied to electret. 3VDC applied to a speaker of 32R results 250mW. I wasn't sure that this doesn't harm the Neo. Im removing the warning.
About button shorting mic to gnd, i thought the same, but this headset shorts with a 48R resistor. I dont know if it matters. I haven't tested yet because i dont have any application for testing. I'm waiting for help in community mailing list.
I think rework instructions for each model are important, because you can easily break the case if you don't know how to disassemble. If you want a smaller article, i can make images smaller and put them horizontally, and put all the text in only one paragraph.
/amd77 2008-09-07 23:35:00