HardLabs

MiniVCF

benjiaomodular·MiniVCF·KiCAD/MiniVCF 1.1/MiniVCF.kicad_pcb

MiniVCF PCB layout, top view — open source board by benjiaomodular

About the MiniVCF PCB

MiniVCF is an open source PCB design by benjiaomodular, published on GitHub. It is a 2-layer board measuring 30 × 128.5 mm, with 73 components from 36 distinct parts.

Other key parts include the TL074. By type, the board carries 23 resistors, 16 diodes, 14 capacitors, 12 connectors and 2 ICs.

It belongs with the audio designs in this gallery.

From the project

A 4HP diode ladder low-pass filter for Eurorack modular synthesizer

This is a diode-ladder voltage controlled low pass filter based on Moritz Klein's diode ladder tutorial series.

More info on my website: https://benjiaomodular.com/post/2022-03-11-mini-vcf/

Main components on the MiniVCF

TL074

MiniVCF bill of materials (BOM)

73 components, 36 distinct parts.

QtyPartRefs
2
TL074
U1, U2
1
JST_BUS
J1
1
IDC_BUS
J2
1
AudioIn
J3
1
CV1
J4
1
AudioOut
J5
1
CONN_PWR1
J6
1
CONN_PWR2
J7
1
MAIN_BOARD_CONN
J8
1
CTRL_PANEL_CONN
J9
1
CV2
J10
1
CTRL_PANEL_CONN2
J11
1
MAIN_BOARD_CONN2
J12
2
100k
CUTOFF1, RESO2
3
10k
CV_AMT1, CV_AMT2, POST_LPF1
1
SW_DPDT_x2
LP_BP_SWITCH1
11
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +3
4
LED
D12, D13, D14, D15
1
LED
D16
2
1uF
C1, C7
Show 16 more
QtyPartRefs
1
680pF
C2
4
1nF
C3, C4, C5, C6
2
100uF
C8, C9
4
100nF
C10, C11, C12, C13
1
100nF
C14
2
200k
R1, R20
8
33k
R2, R4, R5, R6, R7, R8, R9, R10
1
330
R3
2
2k
R11, R12
3
100k
R13, R14, R22
2
10k
R15, R23
1
2.7k
R16
1
1k
R17
1
10k-20k
R18
1
47k
R19
1
200r
R21

MiniVCF design files

The KiCad project lives in the benjiaomodular/MiniVCF repository on GitHub; these links point at the commit this page was built from.

MiniVCF: common questions

How big is the MiniVCF PCB?

The MiniVCF measures 30 × 128.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MiniVCF?

73 components, from 36 distinct parts. The full bill of materials is listed on this page.

Where can I download the MiniVCF design files?

From the benjiaomodular/MiniVCF repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the MiniVCF design in my own project?

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

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