iPad Midi Controller - MidiDesigner Pro (MDP)
Using an iPad to control a VPO Organ
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MIDI Designer Pro is a Programmable Midi Controller
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Can be used with or without a touchscreen monitor to control specific functions (such as a stepper)
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Custom designs/options with an interface that mirrors the organ
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Flexible color schemes, panels, and labels
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Layout and Functionality can be modified to suit your need and style
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Adaptable to most organs sets
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Portable and flexible Midi Control of specific organ functions
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Compatible with PCs and Mac
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Initial development for Hauptwerk, tested with GrandOrgue
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Accepts hardware switch (keyboard or piston) operation
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App for iPadOS
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St. Annes Moseley custom Master Generals Stepper function​​​ shown
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Labeled Cued Combo text display indicates functionality
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Bi-directional Midi Learn at organ or MDP
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Controls/Displays basic Stops, Couplers, and Pistons​
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Landscape or portrait mode
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One or two iPad capability (left jamb/right jamb)
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Sample designs for Schantz Chapel Organ,
American Classic Organ Minor I, Friesach
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Your Organ? Ask me.
Future MDP Features
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Program Crescendo/Swell Pedal in Stepper
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Hardware (piston or toe stud) control of stepper
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Play 3+ keyboard organ with 2+ physical keyboards (switch keyboards during play)
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Program Keyboard Switch in stepper function
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Custom Frame to mount iPad to organ
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Your suggestions and comments welcome
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Checkout the Demo Video below
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Page based Registration Stepper Function
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Registration Stepper for iPad implements Registration settings programmed in the iPad, not the organ
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The example features 6 pages and 20 Master General registrations per page (up to 120 registration settings)
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Layouts for other organ sets and other layout options can be created (contact me for info)
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Registration Set Pages flexible display can be labeled such as Pre(lude), Proc(essional), Offer(tory), Bach xxx, etc. in addition to Page numbers
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Custom Stepper function design based on HW Master Generals
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Example includes Divisional Combos with separate registrations on each page
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Stepper can be controlled by hardware pistons or toe studs
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Provides manual touchscreen control of stops, couplers, and pistons
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Dual iPad optional implementation (see Portrait Mode example below) splits the Single iPad display featuring Stops on one iPad and Stepper Control on a second iPad to provide larger buttons
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Sample design based on St. Anne’s Moseley organ set, similar layout for other organ sets can be readily developed
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Flexible layout, including button colors and labels, is easily modified to suit your preference
iPad Stepper Function for Hauptwerk using Cued Combo
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Registration Stepper for iPad implements Hauptwerk’s Master Generals and Cued Combination functions
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Cued button flexible display can be labeled such as Pre(lude), Proc(essional), Offer(tory), Bach xxx, etc. in addition to numbers (see example)
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Custom Stepper function design for Master Generals
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Single iPad version can feature Steppers and Stops (organ set based) or Steppers only (for larger button interface)
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Dual iPad implementation splits the Single iPad display featuring Stops on one iPad and Stepper Control on a second iPad to provide larger buttons
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Sample design based on St. Anne’s Moseley organ set, similar layout for other organ sets can be readily developed
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Other controls can be included, such as registration Setting or Divisional Pistons
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Flexible layout, including button colors and labels, is easily modified to suit your preference
St. Anne's Master Gen/Combo function
Demo of Improved Hauptwerk Stepper
Click Video to start playback. Click again to stop
Demo of Hauptwerk Master Generals Stepper
Click Video to start playback. Click again to stop
Custom iPad Frame to mount to organ
Currently Under Development
to Get In Touch for comments or further information
Dual iPads - Left Jamb
Dual iPads - Right Jamb
Portrait Mode
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Single Page on one iPad for larger display
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Dual Page split across 2 iPads to allow for more buttons
Stop/Coupler Operation
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Duplicates Stop/Coupler controls of an organ
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iPad Buttons provide /-control of organ Stops/Couplers
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Bi-Directional activation (iPad or Organ)
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iPad Buttons indicate active Stops/Couplers
Stepper Operation – Cued Combo
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Duplicates the HW Cued Combo stepper operation using large Up and Down buttons
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Display can be labeled to represent Cued Combo number or Cued Function or both (see example above)
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iPad indication may require initial manual synchronization with organ setting
Stepper Operation – Master Generals
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Adds an Up/Down Stepper function for the 20 HW Master General Pistons
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iPad Buttons indicate the active Piston
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iPad Buttons provide touch-control of selected organ Piston
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If moving Down from 1, 20 will be selected
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If moving Up from 32, 1 will be selected
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“C” (General Cancel) will clear all stops and deselect the Master General Piston
The example below shows another configuration for St. Annes Moseley
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Real time iPad touch control of Combination Pistons and Stops while playing
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Control from iPad, not computer (e.g., mouse and/or monitor)
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Organ will match iPad display
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Individual On/Off control of Stops
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Easily Programmable for other HW Organs (see samples below)
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Layout is configurable (labels, shapes, color, background, etc.) to suit your preference
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The display shows result of Combo 4 for Swell, Great and Pedal depressed
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Pressing a Combo button will activate pre-programmed stops and turn off non-programmed stops
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Pressing an ON stop will turn it off
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Pressing an OFF Stop will turn it on
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Pressing one Stop will not affect any other Stop
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C (Clear) will clear all Stops for both organ and iPad display.
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OPTIONAL: Registration Stops are programmable on the iPad, not in the organ
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Programmed directly on the iPad, not in the Computer
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Multiple switchable configurations are possible (e.g., music based)
The organ settings after Combo 4 for Swell, Great and Pedal depressed on iPad
Sample Layout for American Classic Minor I
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Functionality similar to St. Anne's above.
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Settable 10 step General Combo included
Sample Layout for Friesach
Friesach with Stepper
Features of the Friesach with stepper design include
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Stop placement mirrors organ set
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Cued Combo ​Stepper with custom text for each step
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20 step Master General Stepper with large UP and DOWN sequential buttons
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Reset reactivates last selected Master General
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Registrations Settable from the iPad
Sample Layout for your organ
can be supplied
Layout for 2 iPads, Left Jamb and Right Jamb
Name your Tune!
to Get In Touch for comments or further information