Make the wavetrigger play notes

[baloe]

Hello everyone. I am struggling to play a note on the Wavetrigger board.

I have done the following:

• I have unpacked the MIDI example MellotronDemo.zip onto the SD card
• I have verified that a sound is played after pressing the test button on the Wavetrigger board.
• I have hooked up:
  • Arduino TX (0) with Wavetrigger RX
  • Arduino GND with Wavetrigger GND

I have been playing around with a few arduino sketches, like the one below, but none of them ever produced a sound.
Could anyone give me a hint on how to get this to work?

According to the manual on sendNoteOn I do have to pass in bytes, but I did also try to use bytes(note) in the sketch below.

#include <MIDI.h>

// Create and bind the MIDI interface to the default hardware Serial port
//MIDI_CREATE_INSTANCE(HardwareSerial, Serial, MIDISerial);
MIDI_CREATE_DEFAULT_INSTANCE();

void setup()
{ 
    MIDI.begin();
}

void loop()
{
    for (int note = 0; note < 100; note++) {
      MIDI.sendNoteOn(note, 127, 1);
      delay(100);
      MIDI.sendNoteOff(note , 0, 1);
      delay(100);
    }
}

(I am also asking in an issue over at the Wavetrigger repository: robertsonics/WAV-Trigger-Arduino-Serial-Library#25)

[franky47]

That page suggests MIDI support was added in the latest firmware version of the Wavetrigger, just checking if that's your case before digging any further.

Edit: My bad, it's just realtime controls and pitch bend that were in the latest firmware.

Could this be a channel issue? Maybe try other channels than 1 and see what happens.

[baloe]

mh I don't know which firmware version is on the board but I assume it is 1.28 because (if I remember correctly) this was the latest stable version at the time I bought the board (and it still is). Up to version 1.30 track numbers are computed as

Track Number = (MIDI Channel * 128) + (MIDI Bank Number * 128) + MIDI Note Number

That track number then determines the first three 0-leading digits in the file name that is loaded to play the note.
I currently have files 043-077, so yes, a channel=0 would seem to be more promising, but the documentation for the MIDI library requires 1-16. I also don't know how to set the MIDI bank number.

[baloe]

I finally succeeded in triggering sound, but oddly I have to use channel 2 where I was expecting channel 0 to be appropriate: robertsonics/WAV-Trigger-Arduino-Serial-Library#26
It's really confusing