Highly Liquid Forum user joacofz6 has created a MIDI CPU control terminal “config parser-debugger and builder” for the latest MIDI CPU firmware (v1.4beta). It is a spreadsheet document (tested in Excel and Open Office so far) that builds MIDI CPU configuration code based on drop-down menus. It can also be used to analyze the contents of a MIDI CPU configuration dump.
All MSA MIDI decoders (MSA-P, MSA-R, and MSA-T) are now shipping with firmware version 3.2 pre-installed for easy preset-based operation. The firmware version 3.3 thread is open for comments and suggestions.
Guitarist and gear builder Joe Leskovar of Toronto has used the MSA-R for MIDI control in various projects, including his V-twin rackmount preamp and custom high gain amp switcher & FX router. Joe’s music can be found here.
Harold Osica of Belgium mounted an MD24 MIDI decoder on a custom Eurorack panel for easy MIDI triggering of his modular system. More of Harold’s custom hardware, music and performances can be found at Osica-Music.com, Soundcloud and Facebook.
The complete design (PCB, bill of materials, firmware source code) for the MPA MIDI decoder has been posted under the Creative Commons Attribution-ShareAlike license. The source files can be found at the MPA support forum.
The MPA has been placed on sale at the Highly Liquid Store and will be discontinued after remaining inventory has been depleted.
The MPA (MIDI potentiometer array) is a general-purpose MIDI decoder with 8 independent 5V logic outputs and 4 independent digital potentiometer outputs.
Highly Liquid Forum user Jim U recently completed a MIDI conversion of a Galanti Praeludium II organ console for use with Hauptwerk virtual organ software. Three MIDI CPU units generate MIDI output from manuals, stops and pedals. Four MD24 units drive various LED indicators on the console. Additional project discussion can be found at The Organ Forum.
Chicago-based artist Alexander DeGraaf employs several UMR2 and MSA-T boards for his ongoing project Pastel Fractal. Alex uses MIDI control for robotics and live audience participation in addition to more traditional sequencing and synthesis functions.
I have three sampling keyboards into which I have installed UMRs: two Yamaha VSS-30s and one Casio SK-8. I use different samples on the keyboards for different compositions such as: my singing voice, a dog bark (sampled from SK-5), a TR-808 clap, a Doc Watson banjo riff, a Chet Atkins guitar riff, and some scatting sounds.
In my installation sculptures, I’ve used as many as two MSA-T MIDI Decoders to turn my MIDI note messages into voltage pulses for as many as fourteen small 24V solenoid motors. I’ve engineered these motors to reset immediately after being triggered, and I’ve connected them in various ways to percussive elements within the sculptures. In this way, I am able to MIDI-sequence robotic percussion strikes and sounds in sync with my compositions that are otherwise played by more conventional MIDI sound engines such as synthesizers, keyboards, and drum machines. The robotic percussive elements within the sculpture each provide a unique source from which sounds stimulate the inhabitant of the sculpture. I provide additional sound sources – besides robotic percussions and the main P.A. – by attaching small speakers to individual keyboards and drum machines so they may be hung around the sculpture or handed out to the inhabitants to pass and move about. Thus, inhabitants of the sculpture – also known as members of the audience – can contribute to the composition during a performance with these floating pieces of hardware by engaging buttons or keys within their reach.
More from Pastel Fractal can be found at Vimeo, Soundcloud, and Facebook.
Highly Liquid Forum user cjfox rehoused a set of Hammond drawbars and replaced the original resistor wires with slide pots. Then he used a MIDI CPU to convert the drawbars into a MIDI controller for use with his Nord Electro 3. The MIDI CPU configuration is posted in the project’s forum thread.
The Oberheim OB-Xa is a classic synthesizer that can be retrofitted for MIDI input/output via the UMR2. Highly Liquid Forum user Mondovermona recently posted photos of his UMR2 OB-Xa MIDI retrofit project.
The UMR2 has been used to add MIDI input/output to a wide variety of synthesizers, including vintage analog gear like the Teisco SX-400. Highly Liquid Forum user Lackan110f recently shared his Teisco SX-400 MIDI retrofit project and posted a MIDI-sequenced demo on YouTube.