A new MIDI library - Look What I've Done - XOD Community
Building an Arduino MIDI Controller - Leandro Linares
USBMIDI on Blue Pill board... - Arduino for STM32
Amazon.com: LEKATO USB Type-C MIDI Interface MIDI Cable Adapter with Input & Output Connecting with Keyboard/Synthesizer for Editing & Recording Professional MIDI Adapter Cord with Windows/Mac for Studio -6.5Ft : Musical Instruments
Second iteration: USBmidi2 / Raspberry Pi Controller
A new MIDI library - Look What I've Done - XOD Community
Arduino and USB MIDI – Simple DIY Electronic Music Projects
Connecting USB to Simple MCUs - Circuit Cellar
JY MCU USB Bluetooth compatible wireless serial port transparent transmission module original HC06 host with housing 2.0|Parts & Accessories| - AliExpress
A new MIDI library - Look What I've Done - XOD Community
Amazon.com: LEKATO USB Type-C MIDI Interface MIDI Cable Adapter with Input & Output Connecting with Keyboard/Synthesizer for Editing & Recording Professional MIDI Adapter Cord with Windows/Mac for Studio -6.5Ft : Musical Instruments
A new MIDI library - Look What I've Done - XOD Community
Make Your Own Cheap USB MIDI Controller or Keyboard : 4 Steps - Instructables
Arduino USB MIDI Interface : 10 Steps - Instructables