USB2BLE MIDI Bridge

This project converts USB MIDI signals from Yamaha Digital Piano to Bluetooth MIDI (BLE MIDI), enabling wireless MIDI connectivity.

Tested on Yamaha YDP-144.

Hardware Requirements

• ESP32-S3 DevKitC board
• USB Type A breakout board
• Yamaha Digital Piano (with USB MIDI support)

Wiring Instructions

Connect the USB Type A breakout board to ESP32-S3 as follows:

• USB D+ → GPIO20
• USB D- → GPIO19
• USB VCC → 5V
• USB GND → GND

Usage

1. Connect the hardware according to the wiring instructions
2. Flash the program to ESP32-S3
3. Connect a USB cable between the piano and the USB breakout board
   • Piano side: Standard USB-B port
   • Breakout board side: USB-A port
4. Turn on Bluetooth on your mobile device/tablet and search for the MIDI device
5. Start using - the piano's MIDI signals will now be transmitted via Bluetooth to the connected device

Build and Flash

idf.py -p /dev/your_usb_to_serial_port flash