Amazon.com: LEKATO MIDI USB C Cable Type-C MIDI Interface with Input & Output Connecting with Keyboard/Synthesizer for Editing & Recording Professional USB C MIDI Cable Adapter with Windows/Mac for Studio -6.5Ft :
Arduino Mega Midi controller? : r/arduino
DIY usb midi host, hobbytronics, any experience? - MOD WIGGLER
Building an Arduino MIDI Controller - Leandro Linares