I need to convert a 3.5mm aux input to USB, but it also needs to work as a flash drive. What are my possibilities, is there anything like that available for sale or do I need to make a custom PCB? I'm a total beginner in this matter and do not know where else to ask. Any help would be appreciated.
What you want are three devices:
- A sampler or an audio card with a line-in (USB based)
- An USB pen drive
- An USB hub
I see no technical reason why you cannot build all three devices on a single PCB, but unless you are building many of them it might be cheaper to just pick a box and buy those three components.