Preben.Friis

You should be able to use the MidiBox MM (MotorMix) emulation with all versions of PT. (You just need to download the drivers from digidesign sepeately). Best regards /Preben Friis

Hi Evan, First of all, the HUI protocol is closer to that of Motomix than to the protocol of Mackie Control, so if you want to build something yourself, start with the MotorMix emulation and start modifying it. That is actaully the simplest of the issues: ProTools sends a "Ping" which is "note-on, key 0, velocity 0" (90 00 00) and the HUI needs to reply with "note-on, key 0, vel 127" (90 00 7F). It is specified in the MIDI implementation chart, page 28 in the pdf manual. www.mackie.com/pdf/hui_om.pdf The time code digits are sent as SysEx - as you have discovered - in a fairly simple protocol: F0 00 00 66 05 00 11 D1 D2 D3 D4 ... F7 0x11 is the magic number that tells you that it is the time/display. D1-D8 are the digits (right to left). ProTools does not always send all 8 digits! Digit values are 0-9. If a digit is 0x20 it is all off. If bit 9 (0x10) is set, the dot should be lit. 0x0D is minus sign. '-' That's it....! :) For reference: byte 6 tells where the text goes: 0x10 = Scribble strip text (Byte 7 is index. 8-11 is ASCII.) 0x11 = LED (See above) 0x12 = LCD (Byte 7 is index of 8 * 10 chars matching a 2x40 display) Why I know all this? Well, I started making a MidiBox HUI emulation two years ago, but quit after I got the LED and LCD working. I fired it up tonight, and still got it working: It consists of a core, a LED board with two 74HC595 wired in a matrix, and a LCD. The chips can only deliver enough power to drive a fairly faint light, but since I like to work in the dark, it is kind of okay. Recently I got a real Mackie HUI, so the chances of this project to be completed are fairly slim. Since I made some major modifications compared to how a MidiBox LC is wired up, you will not be able to reuse my code. Sorry. :( Best regards /Preben Friis