I hope this helps someone… just spent an hour debugging this
I have an OP-Z with oplab module installed, ins/outs set to MIDI.
Been trying to trigger drums on OP-Z using a Nektar Aura Beat Composer.
I’ve set up the 16 Aura pads to trigger notes in the OP-Z’s range on Channels 1-4.
When routing the Aura to Mac, Mac to OP-Z via USB, these triggers work fine.
However, when plugging in the MIDI Out of Aura to MIDI in of OP-Z with a 3.5mm MIDI adapter into OP-Z, I see a slight light (indicating MIDI in being received), but no notes played.
I tried 3 different White Arturia MIDI 3.5mm jacks - each had the same problem.
Finally, I used the Black 3.5 MIDI jack adapter that shipped with the OP-Z, and hurray, notes played!
So in summary, I guess not all 3.5mm MIDI adapters are created equal, and I should stick to using the TE ones?!