USB Device Not Supported - on iPad

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npdjapan

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Hi all

I am trying to connect my teensy 3.5 to control a MIDI application on iPad connecting via the USB Camera Connection Adapter for IPAD.

It works for about a minute after a fresh reboot the ipad.
At this time the applicaiton recognizes the Teensy and buttons work as expected. Then, after about a minute, I get a pop up that says "THIS ACCESSORY MAY NOT BE SUPPORTED".
At that point the application does not recognize the Teensy anymore.
I get the same results when I connect the Teensy using a powered USB hub or directly to the Teensy without powered USB Hub.

Anyone seeing similar inconsistent connectivity.
I get the same behaviour on two different iPads, one iPad version 3 (2012, 30pin connector) and iPad Air 2 (lightning connector)

Could this be a code issue ?
Using incorrect power on Teensy ?

any advice appreciated !

Nick
 
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