2 layers58 × 65 mm Vcf core, the printed circuit board in 3D

Vcf core

Fully analog DIY-friendly modular synth

Size: 58 × 65 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 89
Nets: 54
Pads: 215
Tracks, vias: 408, 353
Pours: 2
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 1 Jun 2025
Updated: 27 Oct 2026

Overview

Vcf core is an open-source printed circuit board by shmoergh, from the shmoergh/moduleur repository on GitHub. It is a 2-layer board of 58 × 65 mm with 89 parts on 54 nets, routed with 408 tracks and 353 vias.

It is built around the TL072, S1711-46R and BC847BS. Its parts include 29 resistors, 22 capacitors, 12 diodes, 8 connectors and 4 ICs. It belongs with the audio and music boards of this library.

Main components

README

modules/08-default-patch/README.md

Hog Moduleur / Default Patch

An optional passive PCB which connects the modules of the Shmøergh Moduleur. This essentially creates a default patch which makes the Moduleur playable without patch cables.

How to Build

Follow the build guide →

Module specific instructions

🐛 3D model bug in schematics

The current version of the 3D model has two bugs:

It incorrectly uses dual row headers. Single row, long pin headers should be used on the BACK side of the PCB so that it can connect to the UI board through the holes on the Core board.
The side of the ADSR+VCA1, ADSR+VCA2 and UTILS pin headers are wrong. All pin headers should be soldered on the BACK side of the PCB.

License

Open source licensed under CC BY-NC 4.0.

Feel free to fork, build, and tweak.

Disclaimer

Latest module version

v1.0

Parts

Qty	Value	Footprint	References
10	100n	Capacitor_SMD:C_0603_1608Metric	C1, C2, C3, C4, C5, C6, C8, C9, C15, C16
10	1N4148	Diode_SMD:D_SOD-123	D1, D2, D3, D4, D5, D6, D7, D8, D9, D10
4	100u	Capacitor_SMD:CP_Elec_6.3x7.7	C13, C17, C21, C22
4	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R4, R6, R8, R29
4	1k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R18, R19, R23, R32
4	LOGO	Shmoergh_Custom_Footprints:Gyeszno	G*, G, G, G*
4	MountingHole	MountingHole:MountingHole_3.2mm_M3_DIN965_Pad	H1, H2, H3, H4
4	TL072	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U1, U2, U3, U4
3	1n (Foil)	Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm	C10, C12, C14
2	1.5k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R13, R22
2	100k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R30, R31
2	1M	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R24, R27
2	1N5817	Diode_SMD:D_SOD-323	D11, D12
2	47k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R9, R26
2	S1711-46R	Shmoergh_Custom_Footprints:HARWIN_S1711-46R	J4, J5
1	100	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R16
1	100k	Potentiometer_THT:Potentiometer_ACP_CA6-H2,5_Horizontal	RV_MAX_RESO1
1	10n	Capacitor_SMD:C_0603_1608Metric	C7
1	10u	Capacitor_SMD:CP_Elec_4x5.4	C20
1	180k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R11
1	1k	Potentiometer_THT:Potentiometer_ACP_CA6-H2,5_Horizontal	RV_BALANCE1
1	1u (foil)	Capacitor_THT:C_Rect_L7.0mm_W4.5mm_P5.00mm	C18
1	2.2k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R14
1	2.2u	Capacitor_SMD:CP_Elec_4x5.7	C11
1	2.7k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R12
1	200	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R21
1	200k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R10
1	20k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R1
1	220k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R28
1	22k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R25
1	3.9k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R20
1	33k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R15
1	390	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R17
1	4.7u	Capacitor_THT:CP_Radial_D8.0mm_P5.00mm	C19
1	56k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R7
1	BC847BS	Shmoergh_Custom_Footprints:SOT-363_SC-70-6	Q1
1	Conn_01x02	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J7
1	Conn_01x06	Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical	J1
1	Conn_02x02_Counter_Clockwise	Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical	J3
1	Conn_02x03_Odd_Even	Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical	J6
1	Conn_02x04_Counter_Clockwise	Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical	J2
1	Conn_02x05_Odd_Even	Connector_IDC:IDC-Header_2x05_P2.54mm_Horizontal	J8

The 86 most common of 89 parts.

Questions

How big is the Vcf core PCB?

It measures 58 × 65 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Vcf core use?

89 parts, built around the TL072, S1711-46R and BC847BS. 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 Vcf core KiCad files?

From the shmoergh/moduleur repository on GitHub, at the commit this page was made from: the board is modules/04-vcf/electronics/core/vcf-core.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Vcf core design in my own project?

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

Category and platform

Audio and music

Topics

analog diy diy-electronics hardware-designs modular synthesizer

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/shmoergh-moduleur-vcf-core" title="Vcf core in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/shmoergh-moduleur-vcf-core.jpg" alt="Vcf core" width="1200" height="900">

A picture that opens the board, for a README

[![Vcf core](https://pcbkit.io/embed/boards/shmoergh-moduleur-vcf-core.jpg?size=s)](https://pcbkit.io/boards/shmoergh-moduleur-vcf-core)

Source

Repository: shmoergh/moduleur
Board file: modules/04-vcf/electronics/core/vcf-core.kicad_pcb
Commit: 88bff17
Homepage: shmoergh.com/moduleur
Licence: Not stated

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