The USB cable did not have these parts populated and used a common ground for signal transfers. The MIDI specification requires an opto-isolator to completely isolate MIDI connected circuits. Here is a very rough schematic of how it’s done and how it should have been done: After further investigations, it turned out that the wiring was done completely different to the MIDI specifications. That’s when I decided to open up the plastic casing to find a few surprises…įirst thing I noticed, were the missing components on the board pictured in the red square. The Rock Band keyboard detected a MIDI cable and switched to MIDI mode, PC properly detected USB MIDI device, but there were no messages in the MIDI-OX application. Videos online demonstrated that connecting the IN connector to the keyboard and USB cable to the PC was all that was needed to use it, but I just couldn’t get it working. I had recently bought a Rock Band 3 Wii keyboard which has come down in price to around £10 with an intention to connect it to a cheap Chinese USB to MIDI interface cable for around £3 pictured above to do some MIDI experiments on my computer.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |