Here’s a simple hardware project that would be a good first-time project for anyone interested in creating their own USB MIDI device.
For this project I used a small and inexpensive USB-based microcontroller board called the Teensy 2.0. This tiny board is packed with features: 25 I/O pins, 12 analog inputs, 7 PWM outputs, 16MHz processor, USB 2.0 full-speed/low-speed, UART, SPI, and I2C.
I used the free Arduino software development platform for this project. The Arduino language is similar to C, so anyone familiar with C will feel right at home. The company that makes the Teensy provides an extension to Arduino called TeensyDuino, which adds support for the USB 2.0 port. Making a USB device could not be easier.