Fri Oct 01, 2021 1:48 pm
Hello Ed,
Not sure if this will help. I'm using Touch OSC (Midi interface controlled on an iPad with customized controls I configured) for my stop jambs and most HW functions. I'm using a 'slider' to show the position of my crescendo pedal. It took a few attempts to get the slider and labels (little dashes showing each step) lined up, but I was able to draw 32 sections in the slider, which correspond to the 32 steps in HW. The slider is the width of my iPad (in portrait mode), and about 1/4 inch tall.
I used to play an old Casavant which had a circular crescendo display, which showed the first step around the 7:00 (if it was a clock) position, and progressed clockwise to show full organ around the 5:00 position. I was trying to create a virtual version of this, but I didn't have the screen space for a circular control on my iPad, so I opted for a rectangular slider which doesn't take up too much room.
The Casavant I used to play also had a red light that showed if the crescendo was on (regardless of what stage) or off. I was able to map the same midi channel/event to a virtual (red) button as I did for the crescendo slider. Now, when the slider is at any stage other than 0, the virtual light glows red. I have the light on both my left and right touch screen, while the crescendo slider is only on the bottom of my right-hand jamb.
I am using LCD displays (from Midi Boutique) for displaying of other controls that Touch OSC can't handle (Reg Stepper, selecting favorite organs/combinations, etc) , but I like the visual component of both the virtual slider, and the red lamp. Neither of the virtual controls are setup to receive input - meaning I can't engage/change the crescendo with the touch screen - the virtual controls only show the state of the crescendo as determined by the position of the physical expression shoe.
This may be considered a 'work around' by some, but it works, meets my needs, and replicates (virtually) what I was used to seeing on the Casavant.
Kevin