Make Your Own Cheap USB MIDI Controller or Keyboard : 4 Steps - Instructables
Building an Arduino MIDI Controller - Leandro Linares
A new MIDI library - Look What I've Done - XOD Community
Arduino USB MIDI Interface : 10 Steps - Instructables
Overview | Adafruit Feather M4 CAN Express | Adafruit Learning System
Datalogging made easy with the Adafruit Feather 32u4 Adalogger
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
USB Host - MIDI device software
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
JY MCU USB Bluetooth compatible wireless serial port transparent transmission module original HC06 host with housing 2.0|Parts & Accessories| - AliExpress