How to start a vst drum machine using a widget

Frank1119 · June 17, 2024, 12:43pm

For Arturia Spark 2 this works:

Add a scriptlet (available under MIDI Processing and Monitoring) to the wiring view
Past this in it (it’s a very rudimentary script, but it should get you going):

var
   start_stop : Discrete Parameter "stop", "start" = "stop" // Discrete named parameters

// Called when a parameter value has changed
On ParameterValueChanged matching start_stop
var m : MidiMessage

    
    if start_stop == "start"
    then
        m = MakeMidiMessage1(0xfa)
        SendNow(m)
    else 
        m = MakeMidiMessage1(0xfc)
        SendNow(m)
    end   
End

Click the compile button!
Go to the edit view
Add a widget
Assign the start_stop parameter from the ‘Scriptlet’ plugin to it. You can rename the scriptlet plugin in the wiring view
Go to panel mode
Press the button…

Spark 2 test.gig (19.5 KB)

Basically it boils down to this: Spark 2 responds the the normal start/stop MIDI messages: MIDI 1.0 Detailed Specification – MIDI.org (page 30 or so)