[ale] iTouch headphone detection

[Chris Fowler]

Fixed!

For the archives.

10K resistor in parallel with ground and mic.

I'll now use a 2010 iTouch as an AF filter for a 1970s HW-8 :)



On Mon, 2010-11-22 at 11:33 -0500, Chris Fowler wrote:
> Last night I built a breakout cable for my iTouch with the purpose of
> plugging the audio output of a HW-8 into the mic jack of the iTouch.
> There is a program I want to use called iDSP.
> 
> What I need to know is how (hardware) does the iTouch detect a
> microphone.  When you plug in the 4 conductor cable it does something to
> see the mic.  I can plug in a real mic and it will detect it.  I can
> then plug in the HW-8 and all works well.  It only does the detection
> with the 4 conductor cable is attached.
> 
> Chris
> 
> 
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