If you are trying to use a MIDI controller that is not natively supported by djay for iOS, and it isn't detected by your device, it may be that your controller isn't 'class-compliant' on iOS.
Since iOS doesn’t have a way to install device drivers, USB devices need to offer standard ‘class-compliant’ hardware that iOS can detect. With non-class-compliant controllers and USB audio interfaces, MIDI or audio might not be detected.
As a result, this is not something that can be changed within the djay software.
If you want to test if your controller will work with iOS, you can download the app called “MIDI Scope” from the App Store, then follow these steps:
- Connect your controller to your iOS device and run the MIDI Scope app.
- On the Source tab of the MIDI Scope app, make sure the controller is selected.
- Navigate to the "Scope" tab by pressing "Scope" on the bottom of the screen, and tap "Connect" on the upper left corner of the screen to connect the controller.
- When you move knobs/fader on the controller, you should see the app showing signals.
If you don’t get a response to your controller’s MIDI input within the app, it could be non-compliant with USB standards.