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I didn't know that ios and android required a different type of 3.5 pin, if I didn't find this item I would only be able to use my Boss headphones with my ipod now I cam use it for everything!
There are two definition of audio jack, OMTP and CTIA.
It turns out that the audio jack of pcDuino3 follows OMTP standard, while Apple follows CTIA/AHJ standard. The definitions of the two different standards are reproduced here (The original can be found at here):
| Standard | Tip | Ring 1 | Ring 2 | Sleeve | Phones using this Standard |
|---|---|---|---|---|---|
| OMTP | Left Audio | Right Audio | Microphone | Ground | old Nokia (and also Lumia starting from the 2nd gen[17]), old Samsung (2012Chromebooks), old Sony Ericsson (2010 and 2011 Xperias), old Wiko (2012-), PlayStation Vita and DualShock 4 PS4 controller |
| CTIA/AHJ | Left Audio | Right Audio | Ground | Microphone | Apple, HTC, latest Nokia, latest Samsung, latest Sony (2012+), latest Wiko (2013+), Jolla,[18] most Android phones |
This converter translates between CTIA and OMTP. By using this converter, iPhone earphone can be used on pcDuino3.
