Kosmo sample and hold

polykit·kosmo-sample-and-hold

Kosmo sample and hold PCB layout, top view — open source board by polykit

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About the Kosmo sample and hold PCB

Kosmo sample and hold is an open source PCB design by polykit, published on GitHub. It is a 2-layer board measuring 50 × 200 mm, with 33 components from 18 distinct parts.

Other key parts include the TL074. By type, the board carries 16 resistors, 7 capacitors, 2 transistors, 2 diodes and 1 IC.

It belongs with the audio designs in this gallery.

From the project

Schematics and PCB layout for a sample&hold / noise module in Kosmo format

This repository contains KiCad schematics and PCB layout for a sample and hold / white noise module in Kosmo synthesizer format. Gerber files can be found here.

\* use film capacitor for better results

https://yusynth.net/Modular/EN/NOISE/index.html

https://www.lookmumnocomputer.com/modular

https://github.com/holmesrichards/Kosmo_panel

Kosmo sample and hold, from the project README — From the project README

Main components on the Kosmo sample and hold

Kosmo sample and hold bill of materials (BOM)

33 components, 18 distinct parts.

Qty	Part	Footprint	Refs
1	TL074	DIP-14_W7.62mm_Socket_LongPads	U1
1	J113	TO-92_Inline_Wide	Q1
1	BC547	TO-92_Inline_Wide	Q2
4	AudioJack2_SwitchT	Jack_Hole_Square	IN1, NOISE1, OUT1, TRIG1
1	Conn_02x05_Odd_Even	IDC-Header_2x05_P2.54mm_Vertical	POWER1
2	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2
1	1n	C_Disc_D5.0mm_W2.5mm_P5.00mm	C1
1	47u	CP_Radial_D6.3mm_P2.50mm	C2
1	1u	CP_Radial_D5.0mm_P2.50mm	C3
1	100n*	C_Disc_D5.0mm_W2.5mm_P5.00mm	C4
2	10u	CP_Radial_D5.0mm_P2.50mm	C6, C7
1	100n	C_Disc_D5.0mm_W2.5mm_P5.00mm	C8
4	1k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1, R11, R13, R14
5	100k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2, R4, R5, R10, R12
2	100	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R3, R7
1	10k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R6
2	1M	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R8, R9
2	10	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R15, R16

Kosmo sample and hold design files

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

Layoutkosmo-sample-and-hold.kicad_pcb

Kosmo sample and hold: common questions

How big is the Kosmo sample and hold PCB?

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

How many components are on the Kosmo sample and hold?

33 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Kosmo sample and hold design files?

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

Can I use the Kosmo sample and hold 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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