The Duet 3 can connect to iOS devices such as iPhone and iPad.
For iPads with the USB-C port (such as iPad Pro), simply connect the included USB-C to USB-C cable between Duet 3 and the iPad as shown in this article: Is Duet 3 compatible with iPad OS and iOS devices?
For iPhones and iPads with the Lightning port, you will need to supply external power because an iPhone does not provide enough to power Duet 3.
The easiest way to do this is to use a powered USB hub along with Apple's USB to Lightning Camera Connection kit:
- Plug the Duet 3 into the Hub's USB port
- Then connect the USB hub to the Apple USB 3 Camera Adapter
- Finally connect the Lightning part of the camera adapter to your iPhone
It may take a few seconds, but the lights on the Duet 3 will illuminate. When this happens, you can open a recording app on your iPhone (like Garageband) and start recording using the Duet 3!
NOTE: In future updates to Duet 3, the 2nd USB-port can be used to connect to an external power supply, eliminating the need for the USB hub.
Here's links to Apple's adapters for reference: