Since you mention another hardware keyboard. With the right data, it should
also be possible to drive another software that could be beamed over a
keyboard too like https://github.com/google/light-my-piano
lasconic
2017-08-23 22:36 GMT+02:00 Tommaso Cucinotta <tommaso.cucino...@gmail.com>:
> forgot: then it also depends on how those LEDs are actually handled by the
> specific device; does anyone have at reach a spec detailing whether one can
> control them over MIDI or how ? AFAIU, Yamaha provides its own app for iPad
> that talks with its keyboard, is that communication documented anywhere ?
>
> Otherwise, when sending a MIDI note-down to a lighted keyboard, I'd expect
> the keyboard to light-up and play the key (my intended usage at the moment,
> is to show the key to press with a light but defer playing to when the user
> actually plays the note).
>
> Thanks,
>
> T.
>
> On 23/08/2017 22:24, Tommaso Cucinotta wrote:
>
>> On 23/08/2017 00:29, Ariel Aramburu wrote:
>>
>>> Nice video !!!
>>>
>>
>> Thanks, I'm working on a better one, showing some more features :-), and
>> with someone helping with the camera :-)...
>>
>> Have you seen this keyboard with integrated lights ? (
>>> https://usa.yamaha.com/products/musical_instruments/keyboard
>>> s/portable_keybo
>>> ards/ez-220/index.html ). It might make this new feature in Musescore
>>> available to other people without your custom built hardware.
>>>
>>
>> Right, I've seen Lasconic's comment as well, happy to see it's triggering
>> interest.
>>
>> I've been thinking a minimum of how to make at least the MuseScore patch
>> Arduino-independent, and this is my thinking:
>>
>> 1) the current patch can:
>> a) send what's being played to the Arduino-assisted LED strip; this
>> is done on playEvent() / playNote() in seq.cpp, distinguishing colors for
>> left vs right hand (channel % 2 at the moment)
>> b) optionally, wait for the sent keys to have all been pressed back
>> from MIDI input, before moving on with the playback; this is done adding a
>> callback from the MIDI receiver back to seq.cpp
>>
>> 1.a) can be done simply forwarding MIDI events to a MIDI output port
>> (Alsa, PortAudio, Jack, whatever); unless I'm mistaken, the "MIDI out"
>> patch would do exactly this already; then, I would have an independent MIDI
>> app that listens on an input MIDI port, filters key presses commands and
>> sends them to Arduino.
>>
>> However, I'd need to attach some extra "meta-data" to each note, when
>> sending it from MuseScore to my special MIDI-to-serial process: for
>> example, the current patch shows different light colors for left and right
>> hand (actually, it's a per-MIDI-channel thing), but I plan to use colors in
>> a more fancy way:
>> a) reflect in the color the volume/velocity of the keypress
>> b) show in full light the next key-sequence I'm waiting for with option
>> 1.b) above, however also show in half-light (darker) the subsequent
>> key-sequence -- when you're really doing it first time on a song, seeing
>> already the next movement ahead of time helps a lot to get the fingering a
>> lot better from the very first strokes.
>>
>> Eventually, the various options should be made available in an additional
>> "tutor pane" when the user might easily control these things (e.g., even
>> customize LED colors for the various staves or instruments or channels
>> etc...)
>>
>> Are you aware of a means of sending this additional extra data through a
>> standard MIDI protocol ?
>>
>> I can encode it into special non-sense MIDI messages (program change,
>> wheel, pedal, whatever I don't care), but perhaps there's a clean way...
>> after all, MIDI can embed even Karaoke texts nowadays, right ?
>>
>> Thanks,
>>
>> T.
>>
>
>
> --
> Tommaso Cucinotta
> Home Page: http://retis.sssup.it/~tommaso
> LinkedIn: http://www.linkedin.com/in/tommasocucinotta
>
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