For reaper users, a JSFX to flip faders and knobs in Arturia mode. Just insert it before the Analog Lab V plugin.
I loved the screen integration of Arturia Mode on the Mk3, but hated that I couldn’t swap my knobs and faders.
Gemini and I wrote this JSFX to intercept the Arturia CCs and flip them on the fly. Bonus: Pad 1 on Channel 10 Pad Bank A toggles the flip mode and stays silent so it doesn’t trigger notes
// @description Arturia KeyLab Mk3 Flip Faders (Knobs <-> Faders)
// @version 1.0
// @author Gemini (AI Collaborator)
// @about
// An elegant utility for Arturia KeyLab Mk3 users in "Arturia Mode".
// Flips the hardware Knobs to control Fader parameters and vice versa.
// Toggle the mode on-the-fly using Pad 1 (Note 36, MIDI Ch 10).
//
// CREDITS:
// Created by Gemini, an authentic, adaptive AI collaborator.
// Designed to bridge the gap between human creativity and technical execution.
// Bending hardware to your will with a touch of wit and a lot of MIDI logic.
desc: Arturia KeyLab Mk3 Flip Faders (Pad Toggle)
// --- UI Controls ---
slider1:0<0,1,1{Normal,Flipped}>Flip Mode
@init
// Define the CC arrays for Knobs and Faders 1-9
// Standard Arturia Mode / Analog Lab V default CC mappings
knob_ccs = 0;
fader_ccs = 10;
// Mapping the Knobs
knob_ccs[0]=74; knob_ccs[1]=71; knob_ccs[2]=76; knob_ccs[3]=77;
knob_ccs[4]=93; knob_ccs[5]=18; knob_ccs[6]=19; knob_ccs[7]=16; knob_ccs[8]=17;
// Mapping the Faders
fader_ccs[0]=73; fader_ccs[1]=75; fader_ccs[2]=79; fader_ccs[3]=72;
fader_ccs[4]=80; fader_ccs[5]=81; fader_ccs[6]=82; fader_ccs[7]=83; fader_ccs[8]=85;
@block
while (midirecv(offset, msg1, msg2, msg3)) (
status = msg1 & $xF0;
channel = msg1 & $x0F; // 0-indexed (Channel 10 is 9)
// Logic for Toggle Pad: Note 36 (C1), Channel 10, Note On (>0 velocity)
is_toggle_pad = (status == $x90 && channel == 9 && msg2 == 36 && msg3 > 0);
is_toggle_pad ? (
// Toggle the mode and refresh the UI slider
slider1 = !slider1;
slider_automate(slider1);
) : (
// If it's NOT the toggle pad, process MIDI normally
// Check for Control Change (CC) messages
status == $xB0 ? (
slider1 == 1 ? (
found = 0;
i = 0;
while (i < 9 && found == 0) (
// Swap Knob CC for Fader CC
msg2 == knob_ccs[i] ? (
msg2 = fader_ccs[i];
found = 1;
) :
// Swap Fader CC for Knob CC
msg2 == fader_ccs[i] ? (
msg2 = knob_ccs[i];
found = 1;
);
i += 1;
);
);
);
// Send the MIDI message (Toggle Pad message is swallowed here)
midisend(offset, msg1, msg2, msg3);
);
);
@gfx 350 120
// --- Visual Interface ---
// Background
gfx_r = 0.08; gfx_g = 0.08; gfx_b = 0.1; gfx_a = 1;
gfx_rect(0, 0, gfx_w, gfx_h);
// Status Logic
slider1 == 1 ? (
gfx_r = 1; gfx_g = 0.35; gfx_b = 0.35; // Reddish for "Flipped"
status_text = "FADERS FLIPPED";
sub_text = "Knobs -> Faders | Faders -> Knobs";
) : (
gfx_r = 0.4; gfx_g = 0.9; gfx_b = 0.4; // Greenish for "Normal"
status_text = "NORMAL MODE";
sub_text = "Standard Arturia Mapping";
);
// Draw Main Status Text
gfx_setfont(1, "Arial", 28, 'b');
gfx_measurestr(status_text, tw, th);
gfx_x = (gfx_w - tw) / 2;
gfx_y = (gfx_h - th) / 2 - 10;
gfx_drawstr(status_text);
// Draw Sub-text
gfx_setfont(2, "Arial", 14);
gfx_r *= 0.8; gfx_g *= 0.8; gfx_b *= 0.8; // Dim the sub-text slightly
gfx_measurestr(sub_text, sw, sh);
gfx_x = (gfx_w - sw) / 2;
gfx_y = (gfx_h / 2) + 20;
gfx_drawstr(sub_text);
