DIY USB Midi Controller With Arduino: a Beginner's Guide : 10 Steps (with Pictures) - Instructables
MIDI fader controller/soundboard USB C from The current stuff on Tindie
BLE MIDI Controller | What is Web MIDI & BLE MIDI? | Adafruit Learning System
MIDI Library, For Communication With Musical Instruments
Adafruit QT Py ESP32-S2 WiFi Dev Board with uFL Antenna Port [STEMMA QT] : ID 5348 : $12.50 : Adafruit Industries, Unique & fun DIY electronics and kits
MIDI CHIP Full MIDI I/O Circuit for Arduino/teensy/esp32 Midi - Etsy
Mini USB host shield with ESP32 as MIDI interface (MAX3421E add-on for arduino synthesizer projects) - YouTube
GitHub - marcel-licence/esp32_basic_synth: ESP32 based simple synthesizer project
MIDI over Bluetooth with ESP32 - Design Concepts - MIDIbox Forum
WVR Audio Development Board - USB Host Version - DEV-21308 - SparkFun Electronics
HOWTO: Make a WLAN Python MIDI Controller with an ESP32 — Ryan Prater
Finally, An Open Source MIDI Foot Controller | Hackaday
Esp32 Cp2104 Dht11 Wifi Bluetooth Soil Temperature Humidity Sensor 18650 Battery Shield Module For Arduino For Nodumcu Micro Usb - Integrated Circuits - AliExpress
Repurposing the MIDI protocol to control Led Matrixes – Fasani Corporation
ESP32-S2 Saola 1R Development Board
Hamster Mix | Crowd Supply
MIDI CHIP Full MIDI I/O Circuit for Arduino/teensy/esp32 Midi - Etsy
ESP32-S3でのMIDI その1 基礎実験 | Lang-ship
Controller Midi-USB - PCB ONLY from Make & Play on Tindie