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2 layers203 × 119.7 mmMix, the printed circuit board in 3D

Mix

JustAGlitchFL/Mix

A multipurpose audio-focused console

Open in PCBKitView on GitHub.kicad_pcb
Size
203 × 119.7 mm
Copper layers
2
Thickness
1.6 mm
Parts
67
Nets
134
Pads
432
Tracks, vias
570, 40
Pours
2
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
2 Jun 2025
Updated
6 Aug 2025

Overview

Mix is an open-source printed circuit board by JustAGlitchFL, from the JustAGlitchFL/Mix repository on GitHub. It is a 2-layer board of 203 × 119.7 mm with 67 parts on 134 nets, routed with 570 tracks and 40 vias.

It is built around the MCP3008-I/P and SK6812MINI-E. Its parts include 32 diodes, 24 switches, 8 resistors and 2 ICs. It belongs with the RP2040 boards of this library.

Main components

2

README

README.md

Mix

A multipurpose audio-focused console

render pcb sch case

Why

I find myself constantly tuning my audio mix from different apps through windows, and would like a panel to adjust levels on the fly. I also wanted to use this for mixing audio for music and video projects, so I included 8 channels. Each channel has a slider for feed volume, an encoder for monitoring volume, a solo button, and a mute button. Everything is remappable to select functions for your usecase. I also included 2 neopixels per channel, one for status, and one for leveling by color.

Assembly

Like Timeline, no case for this one CASE FILES AVAILABLE NOW, as I want that raw PCB aesthetic. Solder everything together, good luck with the SMD for the ADC and IO expander! Might do a case when I get to uni and have access to actually functional printers if I get tired of the pcb as is. As with my other projects recently, drop some 3M 2229 on the back to protect it/the table, and to keep it in place (I love this stuff).

BOM

qpartlinkpricetotal
1pcb$42.60$128.78
16switcheshttps://www.amazon.com/Kailh-Box-Switches-Mechanical-Keyboards/dp/B09WYVJ4F9/ref=sr_1_6?crid=2BTWSUBF3M8FT&dib=eyJ2IjoiMSJ9.E7vTxhYXmILeUbyObROhU1-pIkGjrufbSlMHAIG1e1llnfgUb6kJH0aZrhKnghy3-ae39fOUC746uLoqyr3XWC62Htlj0ggtZ9ec4c0ypx7s1OXmhTfKQ-o2rJuyfk5aXhqV22nhrib2PZU7WaA4AQrzeExJuEfAlETDZ-vuRMSWAneuQMiuWeqVX5Q3DunrHOugdER5ro68nIeODJWdx1rM1AFtYghjvFvBt4W0Gkk.dJo-mbx2UtVbx1mbN98GCLOOPWtmLr-b0G6qjvDffpM&dib_tag=se&keywords=kailh%2Bbox%2Bjade&qid=1754458378&sprefix=kailh%2Bbo%2Caps%2C137&sr=8-6&th=1$25.98
8ECE11https://lcsc.com/product-detail/Rotary-Encoders_ALPSALPINE-EC11E18244AU_C202365.html$15.71
8slide potentiometerhttps://lcsc.com/product-detail/Potentiometers-Variable-Resistors_BOURNS-PTA4543-2015DPB103_C17444183.html?s_z=n_%25C2%25B120%2525%2520250mW%252010k%25CE%25A9%2520Through%2520Hole%2520Potentiometers%252C%2520Variable%2520Resistors%2520ROHS$14.16
1MCP23017_SOhttps://lcsc.com/product-detail/I-O-Expanders_MICROCHIP-MCP23017T-E-SO_C629440.html?s_z=n_MCP23017_SO$1.94
1MCP3008https://lcsc.com/product-detail/Analog-to-Digital-Converters-ADC_MICROCHIP-MCP3008T-I-SL_C2651321.html?s_z=n_mcp3008$3.30
160805 signal diodehave on hand
16sk6812 mini ehave on hand
1pi pico usbc (i wan orph pico)https://www.aliexpress.us/item/3256807183354679.html?spm=a2g0o.productlist.main.5.7a7f3de52hAPEA&algo_pvid=1f0d5b04-b26a-48e7-9a46-02294e034b27&algo_exp_id=1f0d5b04-b26a-48e7-9a46-02294e034b27-4&pdp_ext_f=%7B%22order%22%3A%2284%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21USD%212.56%212.56%21%21%212.56%212.56%21%402101ef5e17540194226302590e807a%2112000040462155654%21sea%21US%216129401916%21X&curPageLogUid=bwr0jMqPdQNe&utparam-url=scene%3Asearch%7Cquery_from%3A$3.56
1lcsc s+h$21.53

Parts

67
QtyValueFootprintReferences
16D_45degDiode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolderD17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32
16SK6812MINIcheyao macropad main PCB-third_party_neopixel.petty:SK6812MINI-ED1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16
16SW_PushButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW2, SW3, SW5, SW6, SW8, SW9, SW11, SW12, SW14, SW15, SW17, SW18, SW20, SW21, SW23, SW24
8RotaryEncoder_Switch_MPRotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_MountingHolesSW1, SW4, SW7, SW10, SW13, SW16, SW19, SW22
8~SlidePOT:RES-ADJ_PTA4543-2015CPB102R1, R2, R3, R4, R5, R6, R7, R8
1MCP23017_SOPackage_SO:SOIC-28W_7.5x17.9mm_P1.27mmU3
1MCP3008Package_SO:SOIC-16_3.9x9.9mm_P1.27mmU1
1RaspberryPi_PicoModule:RaspberryPi_Pico_Common_UnspecifiedA1

Questions

How big is the Mix PCB?

It measures 203 × 119.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Mix use?

67 parts, built around the MCP3008-I/P and SK6812MINI-E. 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 Mix KiCad files?

From the JustAGlitchFL/Mix repository on GitHub, at the commit this page was made from: the board is mix/mix.kicad_pcb and its schematic mix/mix.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Mix design in my own project?

Its repository states no licence, so its author keeps all rights: ask JustAGlitchFL before reusing the design.

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