USB MIDI Fader controller

USB MIDI Fader controllerThis compact MIDI controller provides direct control of MIDI channels using two faders with LED indicators and two buttons.NoteHighlights information that users should take into account, even when skimming.⚠ Code release2025-12-15 V1.0: First publication 2025-12-18 V1.1: MIDI values are no longer transmitted continuously, but only when the fader is moved.Functions Fader 1: MIDI CC11 (Dynamics)Fader 2: MIDI CC1 (Expression)Fader 3: MIDI CC7 (Main Volume)Fader 4: MIDI CC21 (Vibrato)Left button: MIDI CC85 (freely assignable in the DAW, e. g. record start)Right button: Switches between Bank 1 and Bank 2LED indicationColor-coded intensity display (green to red)Blue LEDs indicate the active bank / layerRed LED indicates left button press Required parts1 x Raspberry Pi Pico, RP20401 x NeoPixel Stick with 8 RGB LED2 x ALPS linear slide 10 kΩ potentiometer (travel range: 100 mm)2 x Capacitor 100 nF (recommended)1 x 330 Ω resistor (recommended)2 x 150 Ω resistor (recomme