APC Mini MK2 MIDI Protocol Reference

Quick reference for MIDI protocol. For complete details, see reference.md.

MIDI Message Structure

• Note On: [0x9n, note, velocity] (n = channel 0-15)
• Note Off: [0x8n, note, velocity]
• Control Change: [0xBn, cc, value]

Note Mapping

| Region | Notes | Purpose | |--------|-------|---------| | Pad Grid | 0-63 | 8x8 RGB pads (row * 8 + col) | | Track Buttons | 100-107 | Red LEDs | | Scene Buttons | 112-119 | Green LEDs | | Shift | 122 | No LED | | Faders (CC) | 48-56 | CC 48-55 + Master 56 |

MIDI Channel Effects

| Channel | Effect | |---------|--------| | 0-6 | Brightness 10%-100% | | 7-10 | Pulse animation | | 11-15 | Blink animation |

Use channel 6 (0x96) for full brightness.

SysEx Custom RGB

F0 47 7F 4F 24 00 08 [pad] [pad] [R-MSB] [R-LSB] [G-MSB] [G-LSB] [B-MSB] [B-LSB] F7

RGB encoding:

const encodeRGB = (value: number): readonly [number, number] =>
  [(value >> 7) & 0x01, value & 0x7F] as const;