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2 layers100 × 100 mmAudio mixer, the printed circuit board in 3D

Audio mixer

xfbs/audio-mixer

design and build of my own four-channel audio mixer.

Size
100 × 100 mm
Copper layers
2
Thickness
1.6 mm
Parts
22
Nets
54
Pads
124
Tracks, vias
0, 0
Routed
Not yet
KiCad
KiCad 5 (file 20171130)
Created
6 Nov 2019
Updated
31 Jan 2021

Overview

Audio mixer is an open-source printed circuit board by xfbs, from the xfbs/audio-mixer repository on GitHub. It is a 2-layer board of 100 × 100 mm with 22 parts on 54 nets.

It is built around the MC33174D, 10118193-0001LF and SJ1-3523N. Its parts include 6 capacitors, 3 ICs, 2 connectors and 1 inductor. It belongs with the audio and music boards of this library.

Main components

3

README

README.md

Audio Mixer

This is me documenting the design and building of my desk four-channel audio mixer. You can use this to replicate my results or learn from my mistakes, but keep in mind that I have no formal training in EE.

Documentation

The file doc.tex contains my writeup of the project. You may want to build this with LaTeX to generate a PDF.

The folder datasheets/ contains datasheets of all the parts discussed in my writeup for reference.

Parts

22
QtyValueFootprintReferences
610k LOGparts:EVJYK6RV1, RV2, RV3, RV4, RV5, RV6
4MountingHoleMountingHole:MountingHole_3.2mm_M3H1, H2, H3, H4
3MC33174Package_SO:SOIC-14_3.9x8.7mm_P1.27mmU2, U3, U4
2100nCapacitor_SMD:C_0805_2012MetricC5, C24
21µCapacitor_SMD:C_0805_2012MetricC3, C4
24.7µCapacitor_SMD:CP_Elec_4x5.4C1, C2
110118193-0001LF10118193-0001LF:FCI_10118193-0001LFJ2
16.8µInductor_SMD:L_1210_3225MetricL1
1SJ1-3523Nparts:Headphone_Jack_3.5mm_SJ1-3523NJ4

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Questions

How big is the Audio mixer PCB?

It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Audio mixer use?

22 parts, built around the MC33174D, 10118193-0001LF and SJ1-3523N. 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 Audio mixer KiCad files?

From the xfbs/audio-mixer repository on GitHub, at the commit this page was made from: the board is audio-mixer/audio-mixer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Audio mixer design in my own project?

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