@whatnao You could also run the projector in an activated scene with a keyboard watcher that listens for a trigger and toggles the projector on or off - so the movie keeps running and the projector is what goes on or off. Since the scene is active the keyboard watcher will react even if you are currently in another scene.
@danielpineiro Many thanks for this. I today got onto another guru session about cue's and scenes which gave me a clue as to how you keep some logic running all the time, and your link will, I'm sure resolve this for me. I'm still at the 'add a bit and see stage', so a full 'show' is a tricky thing to conceptualize for me.
I like to have my 'ducks in a row' as it where before I setout, which is probably not the way to use Isadora, but it's all good knowledge. I'm a bit blown away buy what can be done with this system, it's staggering!
Thanks again, now what was that next guru session.... :-)
displaying RGB, Hue and potentially hex values as the counter cycles through 360° hue spectrum.
Using a different approach to @DusX, here's a user actor that a uses the Logical Calculator to shift the various components of the color (which is a 32-bit integer with A, R, G and B as 8-bit values) into the right place and then output them as integers that display as hex values. (I am not sure if you needed a string output or integer outputs.) Anyway, for what it's worth.
I keep recommending the teensy for this. It is an arduino clone that can act as HID or midi interface. Its not difficult to program it to once and for all to have input/output pins on midi notes.
If you are going to do it once, then I strongly reccomend the teensy. Or if you want to go wireless and want to put a bit more programming effort into it, then look at the ESP32 where you can use bluetooth low energy or a webserver to trigger.
Windows 10 has a handy little feature that is great for these cases where dialogs/windows don't open where you want them. You can move most windows by selecting them in the Taskbar (roll over the Isadora Icon, and then onto the IzzyMap thumbnail and click) then press the 'Windows Key' plus the left or right arrow keys. This will move the window across your displays. (up and down also work, but aren't as useful in this case)