d0us wrote:
The other problem is that the ipod is randomly is turned on mid-loop! I do hear a click like a mic has been connected and the ipod music comes on crashing everyday looper.
I have checked the connections and I can't explain the click so maybe it's a problem with the connector inside the iphone
That's in fact a problem linked to the load/impedance that the iPhone expect to detect that a microphone is present on it's jack input. Here are some good infos :
http://blog.faberacoustical.com/2009/iphone/iphone-headset-input-options/ .
Even if they don't tell anything about iPod launching randomly, I remember reading such a problem about a guy trying to connect it's guitar directly through this same input. Can't remember where however ...
The explanation is quite simple. On Apple headsets, there is a little button for doing basic tasks, such as launching the iPod, going to the next song, ... And the way it works is buy short cutting the microphone, the iPhone detects that the load/impedance is gone and then launch the iPod (for a one click action).
So if you have a load/impedance that's not high enough or vary, it will be interpreted by the iPhone as a "launch iPod" action.
What I would recommend is adding a small resistor in parallel with the input, as advocated by FaberAcoustical.
All of this is "out of the box" deduction, so it's not 100% sure science, but some people seems to have good results that way.
Tell us if you manage to get some result

!