work in progress » V-USB tutorial (software-only usb for mega & tiny)
GitHub - spro/megamidi: USB MIDI controller on ATMega328 with V-USB
Oxygen 25 (MKV) | M-Audio
USB MIDI Keyboard to MIDI Hardware How To - Plasma Music Limited
Yamaha i-UX1 USB MIDI Interface For IPod, IPhone And IPad | Full Compass Systems
V-USB - A Firmware-Only USB Driver for Atmel AVR Microcontrollers
Hiduino Workaround for Arduino Duemilanove - Audio - Arduino Forum
GitHub - UA3MQJ/usb-midi-key
V-USB-MIDI
Best Buy: Alesis 25-Key USB MIDI Controller Black VMINI25
Quick And Dirty MIDI Interface With USBASP | Hackaday
Roland TD-30 V-Drums Drum Sound Module Sound Engine MIDI USB Digital 761294502501 | eBay
UM-2EX | USB MIDI Interface - Roland
Alesis V25
Make Your Own Cheap USB MIDI Controller or Keyboard : 4 Steps - Instructables
Oxygen 49 (MKV) | M-Audio
Blastking CMIDI-USB MIDI to USB Interface Cable – Blastking USA
USB MIDI Interface Cable – Neunaber Audio
Alesis V25 25-Key V-Series USB MIDI Controller | Full Compass Systems
Roland UM-ONE mk2 USB MIDI Interface | Sweetwater
M-Audio Oxygen 61 MK V USB MIDI Controller Keyboard | Reverb
M-Audio Oxygen 25 (MKV) USB MIDI Controller — Bananas at Large®
Make Your Own Cheap USB MIDI Controller or Keyboard : 4 Steps - Instructables
Alesis V-Mini Portable USB MIDI Controller Keyboard - Review & Demo - YouTube
Alesis V-Mini - 25-Key USB MIDI Keyboard Controller with 4 Backlit Sensitive Pads, 4 Assignable Encoders and Professional Software Suite Included : Musical Instruments
