2 layers70 × 35 mm
2 layers77.8 × 77 mm
Windows mixer
Gingernut08/MIDI_MIXER10 channel MIDI mixer for windows and linux
- Size
- 77.8 × 77 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 41
- Nets
- 54
- Pads
- 122
- Tracks, vias
- 246, 8
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Feb 2026
- Updated
- 4 Mar 2026
Overview
Windows mixer is an open-source printed circuit board by Gingernut08, from the Gingernut08/MIDI_MIXER repository on GitHub. It is a 2-layer board of 77.8 × 77 mm with 41 parts on 54 nets, routed with 246 tracks and 8 vias.
Its parts include 28 capacitors and 3 ICs. It belongs with the audio and music boards and the RP2040 boards of this library.
README
README.mdThis project lets you use a physical 10-channel MIDI mixer to control the volume of individual apps on Windows. Each fader maps to a specific application, so you can change levels in real time without alt-tabbing or digging through volume sliders. I built this because I wanted actual knobs and faders for my audio instead of fighting Windows every time Discord got loud.
Full Design
PCB
Wiring diagram
BOM
Parts
41| Qty | Value | Footprint | References |
|---|---|---|---|
| 28 | TestPoint | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | C1, C2, C3, C4, C5, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, PC1 +12 |
| 6 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4, H5, H6 |
| 4 | TestPoint | TestPoint:TestPoint_THTPad_D4.0mm_Drill2.0mm | 3.3V1, 3.3V2, GND1, GND2 |
| 2 | MCP23017_SP | Package_DIP:DIP-28_W7.62mm | U2, U4 |
| 1 | XIAO-RP2040-DIP | XIAO:XIAO-RP2040-DIP | U1 |
Questions
How big is the Windows mixer PCB?
It measures 77.8 × 77 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Windows mixer use?
41 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Windows mixer KiCad files?
From the Gingernut08/MIDI_MIXER repository on GitHub, at the commit this page was made from: the board is PCB/windows mixer.kicad_pcb and its schematic PCB/windows mixer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Windows mixer design in my own project?
Its repository states no licence, so its author keeps all rights: ask Gingernut08 before reusing the design.
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