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Full Version: is there mic interface on board ?
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i plug headset in board the headset support mic & speaker , seems mic can not be use , while i open the recorder on android , it does not work , 
my question is how can i use mic on board ?
(12-20-2017, 08:45 AM)leonzhangzhang Wrote: [ -> ]i plug headset in board the headset support mic & speaker , seems mic can not be use , while i open the recorder on android , it does not work , 
my question is how can i use mic on board ?

You need a 4 pin plug, the type used by several different devices like video cameras, smart phones and other sbc's.  Like this one 

https://www.ebay.com/itm/6FT-AV-3-5mm-1-...Sw-kdXz17y

I'm not endorsing this seller just using his photo.  Then you have a right speaker, left speaker and microphone.
(12-20-2017, 11:51 PM)n8xyn Wrote: [ -> ]
(12-20-2017, 08:45 AM)leonzhangzhang Wrote: [ -> ]i plug headset in board the headset support mic & speaker , seems mic can not be use , while i open the recorder on android , it does not work , 
my question is how can i use mic on board ?

You need a 4 pin plug, the type used by several different devices like video cameras, smart phones and other sbc's.  Like this one 

https://www.ebay.com/itm/6FT-AV-3-5mm-1-...Sw-kdXz17y

I'm not endorsing this seller just using his photo.  Then you have a right speaker, left speaker and microphone.


This one is good also.
You can plug in any mic/earphones.

https://www.amazon.com/gp/product/B004SP...46e27fd198
So, has anyone actually made a mic work with this connector?  I have a 4-connector adapter and stereo output is just fine after following the guidance about the pulse audio conf file.  However I am not able to get the mic working.  arecord -l shows two devices hw:0,0 and hw;0,1.  But alsamix detects nothing on either channels with a line source connected.  Pulse audio control is no help either.  If anyone is using the input, I would appreciate any insight.

Jack