I ran into the same problem today. This is not an iconnectivity issue, since it does not work on the USB host ports of my Roland Fantom also. I am not that deep into USB programming, but there seems to be a difference in USB ID or type if either a computer or a embedded device with USB is connected. The NDLR works on all kinds of computers, even my old Powerbook G4 and my iPad without extra supply, but not on any standalone hardware with USB host port.
There must be something in the Teensy USB library that is not configured for use with devices that only accept certain USB classes. I will check that with a friend of mine, who works on the Arduino MIDI library.
There must be something in the Teensy USB library that is not configured for use with devices that only accept certain USB classes. I will check that with a friend of mine, who works on the Arduino MIDI library.
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bye,
Dietmar
bye,
Dietmar