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Kosmo sidechain

polykit·kosmo-sidechain

Kosmo sidechain PCB layout, top view — open source board by polykit
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About the Kosmo sidechain PCB

Kosmo sidechain is an open source PCB design by polykit, published on GitHub. It is a 2-layer board measuring 50 × 200 mm, with 28 components from 20 distinct parts.

Other key parts include the TL074 and Vactrol. By type, the board carries 11 resistors, 4 connectors, 4 diodes, 4 capacitors and 2 ICs.

It belongs with the audio designs in this gallery.

From the project

Kicad PCB and schematics for sidechain/ducking module in Kosmo modular synthesizer format

This repository contains schematics and PCB layout files of a Sidechain/Ducking module in Kosmo format originating on a design by Juanito Moore. Gerber files can be found in the plots directory.

https://www.youtube.com/watch?v=cXaip9cjlhU

https://www.instructables.com/Freestyle-High-Fidelity-Ducking-Circuit/

https://lookmumnocomputer.discourse.group/t/side-chain-module-ducking

Kosmo sidechain, from the project README
From the project README

Main components on the Kosmo sidechain

TL074Vactrol

Kosmo sidechain bill of materials (BOM)

28 components, 20 distinct parts.

QtyPartRefs
1
TL074
U1
1
Vactrol
U2
1
Kick
J1
1
In
J2
1
Out
J3
1
POWER
J4
1
Mix 10k
RV1
1
Amount 10k
RV2
1
Decay 100k
RV3
4
1N4148
D1, D2, D3, D4
1
1u
C1
2
10u
C2, C3
1
100n
C4
1
10k
R1
2
100k
R2, R8
1
33k
R3
2
47k
R4, R6
2
220
R5, R9
1
1k
R7
2
10
R10, R11

Kosmo sidechain design files

The KiCad project lives in the polykit/kosmo-sidechain repository on GitHub; these links point at the commit this page was built from.

Kosmo sidechain: common questions

How big is the Kosmo sidechain PCB?

The Kosmo sidechain measures 50 × 200 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Kosmo sidechain?

28 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Kosmo sidechain design files?

From the polykit/kosmo-sidechain repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Kosmo sidechain design in my own project?

The repository has no license, so all rights stay with polykit. Use it as a reference, and ask the author before reusing the design.

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