HardLabs

VCO

carl-becker·fusion-core·VCO/VCO/VCO.kicad_pcb

VCO PCB layout, top view — open source board by carl-becker

About the VCO PCB

VCO is an open source PCB design by carl-becker, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 108 components from 38 distinct parts.

Other key parts include the AS3340, TL074 and TL072. By type, the board carries 57 resistors, 15 capacitors, 5 ICs, 2 diodes and 1 connector.

It belongs with the audio designs in this gallery.

From the project

DIY analog modular synth

- Get to know delicious circuits (experimenting a lot) - Use them in crude ways to generate sounds - Learn how to design circuits & professionally manufacture them with KiCad - Learn whats possible with analog circuits and what's not - Have a lot of fun without the need of programming

- Get an overview of electronic parts out there - Manage a big project - Make ambient dub techno at the end lol

VCO, from the project README
From the project README

Main components on the VCO

AS3340TL074TL072

VCO bill of materials (BOM)

108 components, 38 distinct parts.

QtyPartRefs
1
AS3340
U1
3
TL074
U2, U4, U5
1
TL072
U3
1
Power Connector
J2
1
Exp FM
EXP_FM1
1
Lin FM
LIN_FM1
1
Oct In
OCT_IN1
5
100k
POT_EXP1, POT_EXP_CV1, POT_FINE_FREQ1, POT_FM1, POT_PWM1
1
PWM In
PWM_IN1
1
Debug Power
PWR1
1
Raw output
RAW_OUT1
1
RECT out
RECT_OUT1
1
SAW out
SAW_OUT1
1
SINE out
SINE_OUT1
6
SW_SPDT
SW_LOW_FREQ1, SW_RECT_SYM1, SW_SAW_SYM1, SW_SINE_SYM1, SW_SYNC1, SW_TRI_SYM1
1
Sync In
SYNC_IN1
2
50k
TRIM_HF_CAL1, TRIM_TUNE1
4
100k
TRIM_RECT_OFF1, TRIM_SAW_OFF1, TRIM_SINE3, TRIM_TRI_OFF1
1
TRI out
TRI_OUT1
2
1N4148
D1, D2
Show 18 more
QtyPartRefs
10
100nF
C1, C7, C8, C9, C10, C11, C12, C13 +2
2
1nF
C2, C3
2
10nF
C4, C5
1
1nF
C6
4
1M
R1, R5, R41, R48
2
20k
R2, R66
1
680
R3
2
5k
R4, R61
3
470k
R6, R10, R11
30
100k
R7, R9, R16, R17, R18, R19, R20, R21 +22
2
220k
R8, R24
2
470
R12, R15
1
2k
R13
1
300k
R14
2
10k
R39, R59
5
1k
R45, R46, R47, R60, R62
1
510
R63
1
50k
R65

VCO design files

The KiCad project lives in the carl-becker/fusion-core repository on GitHub; these links point at the commit this page was built from.

VCO: common questions

How big is the VCO PCB?

The VCO measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the VCO?

108 components, from 38 distinct parts. The full bill of materials is listed on this page.

Where can I download the VCO design files?

From the carl-becker/fusion-core repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the VCO design in my own project?

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

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