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IDAM thru hub question

KashiKashi
in General App Discussion

I want to connect my ipad to my macbook. That’s easy - IDAM and a cable with USB-C at either end.

But what I really want, is to be able to play instruments (in AUM) with my Arturia Keystep and record those sounds into Ableton. I have a powered USB-C hub, so I assumed that would work but it doesn’t. Keystep is powered by a powerpack. It’s going into the USB A port on the hub. And then the USB C cable is going from the USB C port on the hub into the USB C port on my macbook. The hub is obviously connected to the ipad. Why won’t this work? In Audio Midi Set up, the ipad just isn’t appearing. This is one of the main reasons I bought this hub.

There is a workaround, which is that I come out of the hub with a little USB C to 3.5mm adaptor, then go through my Volt audio interface, and into the macbook, but that’s a bit tedious, and I’d prefer to do it without that if possible.
Any thoughts?

Comments

  • chrkachrka

    When you connect the iPad directly to the MacBook, the MacBook acts as a host for the iPad as a USB device which is required for IDAM.

    When the iPad is connected to a hub, the iPad becomes a host itself.

    What you can do is connect the iPad directly to the MacBook via IDAM, and then connect your Keystep to the MacBook and route its MIDI from the MacBook to the iPad via Ableton (eg., using the External Instrument device).

  • uncledaveuncledave

    Hi. IDAM requires a direct connection on the iPad side. This is because the iPad detects that it is on a USB slave port and it acts as a slave to the Mac host. This is the same situation as when you use the Mac to backup or update the iPad. When you connect the hub to the iPad, the iPad acts as USB host, so it cannot become slave to the Mac.

    You can however use a hub on the Mac side. IDAM can transmit MIDI in both directions, so you could connect the keyboard to the Mac and route the MIDI to the iPad.

  • KashiKashi

    Great, knew you’d be there for me @uncledave :) You and @chrka have said pretty much the same thing (unless I have misunderstood). Thank you both!

  • KashiKashi

    Up and running. Thanks again!

  • wimwim
    edited February 1

    Just a note from experience: If you have your keyboard attached to the Mac, you won't be able to play anything on the iPad with it unless you have something to provide the routing. In your case, I assume Ableton is doing the routing. If Ableton's not providing the routing you'll need something that can. MidiPipe is a good, free Mac app that can do that.

    (Only mentioning to save you time in case you decided to noodle on the keyboard and Live isn't running.)

  • KashiKashi

    @wim said:
    Just a note from experience: If you have your keyboard attached to the Mac, you won't be able to play anything on the iPad with it unless you have something to provide the routing. In your case, I assume Ableton is doing the routing. If Ableton's not providing the routing you'll need something that can. MidiPipe is a good, free Mac app that can do that.

    (Only mentioning to save you time in case you decided to noodle on the keyboard and Live isn't running.)

    Cool, thanks Mike 👍🏽

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