3320 VCF main board

DIYSynthMNL·Eurorack-3320-VCF·kicad/Separate boards/rev0.1.0/Main Board/3320_VCF_main_board.kicad_pcb

3320 VCF main board layout, top view — open source board by DIYSynthMNL

About the 3320 VCF main board

3320 VCF main board is an open source PCB design by DIYSynthMNL, published on GitHub. It is a 2-layer board measuring 30.5 × 112.3 mm, with 54 components from 25 distinct parts.

Other key parts include the TL072, AS3320 and TL074. By type, the board carries 31 resistors, 12 capacitors, 3 ICs, 3 connectors and 2 diodes.

It belongs with the audio designs in this gallery.

From the project

A VCF based on the AS3320 VCF Chip

A Eurorack 4-pole low-pass voltage-controlled filter based on the AS3320 chip from Electric Druid — a high-performance 4-pole VCF (CEM3372 family). 12-octave cutoff sweep range and voltage-controlled resonance from zero to oscillation.

- 4-pole (24 dB/oct) low-pass response using all four AS3320 filter stages - 12-octave cutoff range with smooth exponential control - Voltage-controlled resonance — from zero to self-oscillation - Cutoff frequency controlled by a panel pot + CV input with attenuation - Resonance controlled by a panel pot + CV input with attenuation - Three calibration trims: -…

3320 VCF main board, from the project README — From the project README

Main components on the 3320 VCF main board

TL072 AS3320 TL074

3320 VCF main board bill of materials (BOM)

54 components, 25 distinct parts.

Qty	Part	Footprint	Refs
1	TL072	DIP-8_W7.62mm_Socket_LongPads	U1
1	AS3320	DIP-18_W7.62mm_Socket_LongPads	U2
1	TL074	DIP-14_W7.62mm_Socket_LongPads	U3
1	EuroPower_JST_3P	Eurorack_power_jst_3P	J5
1	EURO_PWR_16P	IDC-Header_2x08_P2.54mm_Vertical	J6
1	Main	PinHeader_1x10_P2.54mm_Vertical	J7
1	2K	Potentiometer_Bourns_3296W_Vertical_BigPads	RV1
2	50K	Potentiometer_Bourns_3296W_Vertical_BigPads	RV2, RV5
2	~	D_DO-41_SOD81_P7.62mm_Horizontal_BigPads	D1, D2
2	2.2uF	CP_Radial_D5.0mm_P2.50mm	C1, C2
4	270pF	C_Rect_L7.0mm_W2.0mm_P5.00mm_BigPads	C3, C4, C5, C6
4	100nF	C_Rect_L7.0mm_W2.0mm_P5.00mm_BigPads	C7, C8, C10, C11
2	22uF	CP_Radial_D5.0mm_P2.50mm	C9, C12
13	100K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R1, R3, R5, R7, R9, R16, R20, R21 +5
4	91K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R2, R4, R6, R8
1	1K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R10
3	68K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R11, R19, R25
3	220K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R12, R13, R14
1	330K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R15
1	51K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R17

Show 5 more

Qty	Part	Footprint	Refs
1	3K3	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R18
1	1K2	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R22
1	1K8	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R23
1	150K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R29
1	3.3K	R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical	R30

3320 VCF main board design files

The KiCad project lives in the DIYSynthMNL/Eurorack-3320-VCF repository on GitHub; these links point at the commit this page was built from.

Layoutkicad/Separate boards/rev0.1.0/Main Board/3320_VCF_main_board.kicad_pcb

3320 VCF main board: common questions

How big is the 3320 VCF main board?

The 3320 VCF main board measures 30.5 × 112.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 3320 VCF main board?

54 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the 3320 VCF main board design files?

From the DIYSynthMNL/Eurorack-3320-VCF repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the 3320 VCF main board design in my own project?

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

More boards in Eurorack-3320-VCF

Similar boards