Has anyone successfully used this library with an ipad/iphone? I get a message saying that he device uses too much power, even though it only uses around 10 ma. Using the same device (ItsyBitsy3v) with TeeOnArdu MIDI works fine with my ipad, butnI'd rather just use The library. Thanks!
I found a solution here:
The USB power configuration setting has to be changed to a lower value. I changed it to 20 ma and it's working great now.