Added CV and Gate outputs via 2x i2c MCP4725 modules

AcidTHarmonizer.ino

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+//
+// MODE temperament
+//
+// MAJOR MODES
+uint8_t _ionian[8] = { 0, 2, 4, 5, 7, 9, 11, 12 };
+uint8_t _dorian[8] = { 0, 2, 3, 5, 7, 9, 10, 12 };
+uint8_t _phrygian[8] = { 0, 1, 3, 5, 7, 8, 10, 12 };
+uint8_t _lydian[8] = { 0, 2, 4, 6, 7, 9, 11, 12 };
+uint8_t _mixolidian[8] = { 0, 2, 4, 5, 7, 9, 10, 12 };
+uint8_t _aeolian[8] = { 0, 2, 3, 5, 7, 8, 10, 12 };
+uint8_t _locrian[8] = { 0, 1, 3, 5, 6, 8, 10, 12 };
+
+// MINOR MODES
+// ascending melodic minor
+uint8_t _melodic[8] = { 0, 2, 3, 5, 7, 9, 11, 12 };
+// phrygian ♮6 (dorian ♭2)
+uint8_t _phrygian6[8] = { 0, 1, 3, 5, 7, 9, 10, 12 };
+// lydian augmented (lydian ♯5)
+uint8_t _lydian5[8] = { 0, 2, 4, 6, 8, 9, 11, 12 };
+// lydian dominant (also, "lydian ♭7", acoustic scale, or mixolydian ♯4)
+uint8_t _lydian7[8] = { 0, 2, 4, 6, 7, 9, 10, 12 };
+// mixolydian ♭6 (or melodic major or simply "fifth mode")
+uint8_t _mixolydian6[8] = { 0, 2, 4, 5, 7, 8, 10, 12 };
+// locrian ♮2 (also known as "half-diminished" scale)
+uint8_t _locrian2[8] = { 0, 2, 3, 5, 6, 8, 10, 12 };
+// super Locrian (also "altered dominant scale", or "altered scale")
+uint8_t _super_locrian[8] = { 0, 1, 3, 4, 6, 8, 10, 12 };
+
+uint8_t * _mode[] = {
+  // MAJOR MODES
+  _ionian,
+  _dorian,
+  _phrygian,
+  _lydian,
+  _mixolidian,
+  _aeolian,
+  _locrian,
+  // MINOR MODES
+  _melodic,
+  _phrygian6,
+  _lydian5,
+  _lydian7,
+  _mixolydian6,
+  _locrian2,
+  _super_locrian
+};
+
+#define MODES_NUMBER (sizeof(_mode) / sizeof(uint16_t)) // its array pointer we are holding here
+
+uint8_t harmonizer(uint8_t note)
+{
+  uint8_t octave, interval;
+
+  octave = floor(note/12);
+  interval = floor((note%12)/1.5);
+  
+  return (octave*12) + _mode[_selected_mode][interval];
+}
+