MIDI USB Host Interface for USB keyboard and legacy MIDI DIN device

Description

MIDI USB Host Interface for a USB keyboard and a legacy MIDI device with DIN connectors
Many new MIDI keyboard controllers have no MIDI DIN connector.
They only have a USB port. They do not control a legacy MIDI device (sound module).
This interface solves the problem.
* This interface works as a USB host. No PC required. (See the connection chart)
* The interface supplies DC5V power to your USB keyboard.
A resettable fuse limits the current up to 500mA to protect the USB keyboard.
* It has 3 connectors and a power indicator
- USB 2.0 Type A connector  for a USB keyboard.
- 5-pin MIDI DIN connector for a legacy MIDI device
- Micro USB connector for DC5V power supply
* It requires a smart phone AC adapter with USB micro connector (DC5V, >600mA).
The max current should be 600mA or more. (A few dollars at eBay).
* This interface handles the following MIDI messages (at least):
[Channel Voice Messages]
n=MIDI channel (0-15)
0x8n Note Off
0x9n Note On
0xCn Program Number  (Timbre)
0xEn Pitch Wheel Change
0xBn Control Change (see below)
[MIDI Control Change]
0x01 Modulation Wheel
0x02 Breath Controller
0x05 Portamento Time
0x07 Channel Volume
0x0A Pan
0x12 General Purpose Controller 3
0x13 General Purpose Controller 4
0x15 Undefined
0x16 Undefined
0x10 General Purpose Controller 1
0x1C Undefined
0x1D Undefined
0x40 Sustain Pedal
0x47 Timbre/Harmonic Intensity
0x4A Brightness
0x50 General Purpose Controller 5
0x51 General Purpose Controller 6
0x52 General Purpose Controller 7
0x53 General Purpose Controller 8
0x5B Effect1 Depth
[MIDI System Realtime Messages]
0xF8 MIDI clock
0xFA Start
0xFB Continue
0xFC Stop
(Tested with Pocket MIDI Ver.1.4.1 software. www.morson.jp/pocketmidi-webpage/)
* Tested devices:
(USB keyboard) Midiplus Origin 37, IK Multimedia iRig KEYS, Akai LPK25,
Alesis Vortex Wireless 2 keytar　(Wireless USB dongle), Korg Nanokontrol,
CME Xkey (Polyphonic aftertouch), Arturia Keystep
(MIDI controller) MIDI Fighter, Akai LPD8
(MIDI guitar controller) Fishman Tripleplay
(USB electronic drum set) Pyle PTED01, Alesis Nitro Kit
(MIDI DIN sound module) Roland VK-8M, E-mu Vintage Key Pro, Alesis NanoPiano, Behringer XR12, Elektron Octatrack
* Your MIDI-USB device must be class compliant/plug-and-play.
That means no driver software installation is required to connect to a PC/MAC.
* It does not support non-standard MIDI format devices which require proprietary driver software.
Some of Yamaha keyboards do not work with this interface. Please check user's manual.
Teenage Engineering OP-1 does not work well with this interface.
* This interface does not work with a USB hub. Connect the interface directly to your keyboard.
* No MIDI DIN input. Only inbound to the sound module. No outbound communication.
* Custom printed circuit board.
* Dimensions 65 x 65 x 28mm
* No MIDI/USB cable included.
More than 100 people are using this interface.
Please see the feedback from them.
One user says,
"I tested some MIDI USB interfaces and found all of them have some bugs.
This interface perfectly works. No problem was found"
If you need two or more units, email me BEFORE you order.
If you have a question, please email me.