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name: midi-protocol-lookup description: Look up APC Mini MK2 MIDI protocol details including note numbers, MIDI channels, velocity values, and SysEx format. Use when user asks about "MIDI note", "channel", "velocity", "status byte", "SysEx", "protocol", or needs to understand how MIDI messages control the APC Mini MK2.

APC Mini MK2 MIDI Protocol Reference

Quick reference for MIDI protocol details when developing APC Mini MK2 applications.

MIDI Message Structure

APC Mini MK2 uses standard MIDI messages:

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

Note Number Quick Reference

Pad Grid (8x8 RGB Pads)

Notes 0-63, bottom-left to top-right:

Row	Notes	Hex Range
8 (top)	56-63	0x38-0x3F
7	48-55	0x30-0x37
6	40-47	0x28-0x2F
5	32-39	0x20-0x27
4	24-31	0x18-0x1F
3	16-23	0x10-0x17
2	8-15	0x08-0x0F
1 (bottom)	0-7	0x00-0x07

Formula: note = row * 8 + column (0-indexed)

Peripheral Buttons

Button	Notes	Hex	LED Color
Track 1-8	100-107	0x64-0x6B	Red
Scene Launch 1-8	112-119	0x70-0x77	Green
Shift	122	0x7A	None

Faders (Control Change)

Fader	CC Number	Hex
Fader 1-8	48-55	0x30-0x37
Master	56	0x38

MIDI Channel Effects

Channel selection determines LED brightness and animation:

Channel	Hex	Effect
0	0x90	10% brightness
1	0x91	25% brightness
2	0x92	40% brightness
3	0x93	55% brightness
4	0x94	70% brightness
5	0x95	85% brightness
6	0x96	100% brightness (recommended)
7	0x97	Pulse 1/16
8	0x98	Pulse 1/8
9	0x99	Pulse 1/4
10	0x9A	Pulse 1/2
11	0x9B	Blink 1/24
12	0x9C	Blink 1/16
13	0x9D	Blink 1/8
14	0x9E	Blink 1/4
15	0x9F	Blink 1/2

Status Byte Construction

Status byte = 0x90 + channel

Examples:

• Full brightness: 0x96 (channel 6)
• Pulse 1/4: 0x99 (channel 9)
• Blink 1/8: 0x9D (channel 13)

SysEx Format for Custom RGB

For colors beyond the 128-color palette:

F0 47 7F 4F 24 [len-MSB] [len-LSB] [start] [end] [R-MSB] [R-LSB] [G-MSB] [G-LSB] [B-MSB] [B-LSB] F7

Header breakdown:

• 0xF0: SysEx start
• 0x47: Akai manufacturer ID
• 0x7F: Device broadcast
• 0x4F: APC Mini MK2 product ID
• 0x24: RGB LED command
• 0xF7: SysEx end

RGB encoding (8-bit value to MSB/LSB):

const msb = (value >> 7) & 0x01;
const lsb = value & 0x7F;

Quick Examples

Set pad to red at full brightness

[0x96, 0x00, 0x05]  // Channel 6, Note 0, Red

Turn off pad

[0x90, 0x00, 0x00]  // Any channel, Note 0, Off

Set Track button 1 on

[0x90, 0x64, 0x01]  // Channel 0, Note 100, On

Set Scene button 1 blinking

[0x90, 0x70, 0x02]  // Channel 0, Note 112, Blink

Official Documentation

Protocol PDF: cdn.inmusicbrands.com/akai/attachments/APC mini mk2 - Communication Protocol - v1.0.pdf