J.GILMAN
Design should solve problems and communicate. I've had a lot of titles in my life, but Problem Solver is the one I prefer most.
E-mu Emax
Emaht

E-mu Emax Midi Controller

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Overview

I would like to build a hardware MIDI controller for the E-mu Emax keyboard that works like this software app https://youtu.be/ZlkcHucO_bk

E-mu Emax Keyboard
https://www.synthark.org/Emu/Emax.html

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Deliverables

• Circuit board design and help with ordering
• 33 analog controls, MIDI in/out to connect to the Emax, and power connection
• Sketch code to program an Arduino or similar to send SysEx commands
• Bill of materials for assembly
• Troubleshooting support during build and implementation


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Design

This is the faceplate design and layout for a 32-knob, 1-button MIDI controller
https://jgilman.com/media/Emu_Emax_MIDI_Controller_faceplate_10_8-5x11.png

Location on the Emax
https://www.jgilman.com/media/Emu_Emax_Midi_Controller_faceplate_9_8-5x11.JPG

Illustrator files
https://jgilman.com/media/Emu_Emax_MIDI_Controller_faceplate.zip

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MIDI SysEx commands

Emu Emax SysEx command strings
https://docs.google.com/spreadsheets/d/10aF4BSFivwJU_BU54cbWe6mZRpz4sj2kabnnacwB3-I/edit?usp=sharing

Full Emax MIDI manual
http://synthark.org/resource/emu/Emax_MIDI-RS-422Specs.pdf

Example Universal SysEx Arduino Mega Sketch
CCSysEx_Universal_Controller_Sequencer.ino

Universal MIDI SysEx CC Programmer
https://www.instructables.com/almost-Universal-MIDI-SysEx-CC-Programmer-and-Sequ/

MIDI SysEx Patcher Ver.2
https://www.instructables.com/MIDI-SysEx-Patcher-Ver2/

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Ctrlr Panel

Ctrlr is a software platform that allows you to control MIDI instruments from a PC or Mac.
https://ctrlr.org/
https://ctrlr.org/panels/

Ctrlr Panel for Emu Emax screenshot
https://jgilman.com/media/Ctrlr_panel_for_Emu_Emax.png

Here's a Ctrlr panel for macOS that I've tested
and confirmed will send the correct signals to the Emax via MIDI.
https://www.jgilman.com/media/Emu_Emax_SE_OSX_Alpha1-0.zip

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Please let me know of any questions or concerns.

Best regards,

J.Gilman
j@jgilman.com
404 822 2376