I am looking to control some RGBW leds (maybe SPI-based strips, maybe individual high power RGBW LEDs, not sure yet) with some of my classic computers. That's pretty easy, no concerns there. Lots of arduino projects or I can just add in a 6522/6821/etc. But, I thought, instead of just making a hobby project, I should try to design something that would work with classic systems *AND* current gear, and not be so platform dependent. MIDI came to mind, both because the cost to interface is pretty low, cables are cheap, and MIDI is very well supported. Where I am struggling is getting a handle on how to map the ability to set an individual LED color in a strip of say 20 or 60 to the MIDI protocol without just punting and using SysEx msgs. And, I might have a bunch of these strips (more than 16 perhaps, though my initial project only needs 10-12. I am also aware of DMX lighting and MIDI->DMX converters. DMX XLR-5 cabling is a bit pricier than MIDI 5 pin DIN (though the RS485 protocol seems simple enough), so I thought maybe I should just emulate a MIDI->DMX->LEDs in my design. Anyone familiar with MIDI-controlled lighting and how it's mapped to MIDI messages? Jim -- RETRO Innovations, Contemporary Gear for Classic Systems www.go4retro.com store.go4retro.com