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2 layers105.2 × 128.5 mmMiniMix, the printed circuit board in 3D

A 4-channel active mixer for Eurorack

Size
105.2 × 128.5 mm
Copper layers
2
Thickness
1.6 mm
Parts
53
Nets
34
Pads
148
Tracks, vias
89, 79
Pours
4
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
5 May 2023
Updated
17 Aug 2023

Overview

MiniMix is an open-source printed circuit board by benjiaomodular, from the benjiaomodular/MiniMix repository on GitHub, published under the MIT licence. It is a 2-layer board of 105.2 × 128.5 mm with 53 parts on 34 nets, routed with 89 tracks and 79 vias.

It is built around the NE5532. Its parts include 16 resistors, 12 capacitors, 6 connectors and 3 ICs. It belongs with the audio and music boards of this library.

Main components

1

README

README.md

MiniMix

A 4-channel mixer for Eurorack module synth.

Versions

v1.0

  • Issue: Faders were upside-down
  • Issue: Input 2 wasn't connected to ground

v1.1

  • Issue: Input 2 wasn't connected to ground

Parts

53
QtyValueFootprintReferences
10100nFCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC1, C2, C5, C6, C7, C8, C9, C10, C11, C12
7100KResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR7, R8, R9, R12, R16, R20, R21
5AudioJack2_SwitchTbenjiaomodular:AudioJack_3.5mmJ1, J2, J3, J4, J5
410KResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR1, R2, R3, R10
41MResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR4, R5, R6, R11
4A100kPotentiometer_THT:Potentiometer_Bourns_PTA4543_Single_SlideRV1, RV2, RV3, RV4
3NE5532Package_SO:SOIC-8_3.9x4.9mm_P1.27mmU1, U2, U3
222uFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC3, C4
11KResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR22
1A100kbenjiaomodular:Potentiometer_RV09RV5
1IDC_2x05Connector_IDC:IDC-Header_2x05_P2.54mm_VerticalJ6

The 42 most common of 53 parts.

Questions

How big is the MiniMix PCB?

It measures 105.2 × 128.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the MiniMix use?

53 parts, built around the NE5532. 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 MiniMix KiCad files?

From the benjiaomodular/MiniMix repository on GitHub, at the commit this page was made from: the board is MiniMix v1.1/MiniMix.kicad_pcb and its schematic MiniMix v1.0/Eurorack Power.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the MiniMix design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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