04 diode ladder vcf

bmurauer·cynthia·04_diode_ladder_vcf/04_diode_ladder_vcf.kicad_pcb

04 diode ladder vcf PCB layout, top view — open source board by bmurauer

About the 04 diode ladder vcf PCB

04 diode ladder vcf is an open source PCB design by bmurauer, published on GitHub. It is a 2-layer board measuring 30 × 100 mm, with 66 components from 34 distinct parts.

Other key parts include the TL074. By type, the board carries 26 resistors, 14 capacitors, 12 diodes, 3 connectors, 2 transistors and 1 IC.

It belongs with the audio designs in this gallery.

From the project

Plans for my modular synthesizer

Fill in the "Design" columns before building; fill in the "As-Built" columns after assembly and bench testing.

No .net file exists for this module yet, so the input/output rows below aren't populated from the schematic. Generate the netlist in KiCad (File > Fabrication Outputs > Netlist, or the equivalent export) and I can fill in the Ref / Label columns from it — or list the jacks here yourself.

Main components on the 04 diode ladder vcf

04 diode ladder vcf bill of materials (BOM)

66 components, 34 distinct parts.

Qty	Part	Footprint	Refs
1	TL074	SOIC-14_3.9x8.7mm_P1.27mm	U1
2	BC847	SOT-23	Q1, Q2
1	Audio In	3.5mm jack mono switched	J1
1	Cutoff CV In	3.5mm jack mono switched	J2
1	Audio Out	3.5mm jack mono switched	J3
1	Eurorack 10 pin header	Eurorack Header	H1
1	250k	potientiometer	RV1
2	100k	potientiometer	RV2, RV6
2	2k	trimmer	RV3, RV5
1	1k	trimmer	RV4
1	~	switch_linear_2x4	SW1
10	D	D SMD 0805	D1, D2, D3, D4, D5, D6, D7, D8 +2
2	SS14	D_SMA	D11, D12
2	22uF	CP_Radial_D6.3mm_P2.50mm	C1, C2
2	100nF	C SMD 0805	C3, C4
2	2.2u	CP_Radial_D6.3mm_P2.50mm	C5, C7
3	1.5n	C SMD 0805	C6, C8, C11
1	680n	C_Rect_L10.0mm_W4.0mm_P7.50mm_MKS4	C9
2	47μF	CP_Radial_D6.3mm_P2.50mm	C10, C13
1	47u	CP_Radial_D6.3mm_P2.50mm	C12

Show 14 more

Qty	Part	Footprint	Refs
1	10μF	CP_Radial_D6.3mm_P2.50mm	C14
2	47k	R SMD 0805	R1, R20
4	10k	R SMD 0805	R2, R3, R6, R24
3	220k	R SMD 0805	R4, R23, R25
1	100k	R SMD 0805	R5
4	180k	R SMD 0805	R7, R10, R11, R15
2	1.8k	R SMD 0805	R8, R16
1	220R	R SMD 0805	R9
3	1k	R SMD 0805	R12, R18, R26
2	3k9	R SMD 0805	R13, R22
1	82R	R SMD 0805	R14
1	2.2M	R SMD 0805	R17
1	22k	R SMD 0805	R19
1	1M	R SMD 0805	R21

04 diode ladder vcf design files

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

04 diode ladder vcf: common questions

How big is the 04 diode ladder vcf PCB?

The 04 diode ladder vcf measures 30 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 04 diode ladder vcf?

66 components, from 34 distinct parts. The full bill of materials is listed on this page.

Where can I download the 04 diode ladder vcf design files?

From the bmurauer/cynthia repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the 04 diode ladder vcf design in my own project?

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

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