VC-LFOs
About the VC-LFOs PCB
VC-LFOs is an open source PCB design by Desval27, published on GitHub under the MIT license. It is a 2-layer board measuring 160 × 100 mm, with 92 components from 49 distinct parts.
Other key parts include the OpAmp, LM723 and LM324. By type, the board carries 47 resistors, 21 connectors, 8 diodes, 5 ICs, 4 test points and 4 capacitors.
It belongs with the audio designs in this gallery.
From the project
Knock-off of the Elektor Formant Synthesizer project with the initial goal of being quasi-authentic and secondary goal undecided. Probably tweaks of some kind.
- English Translated Document - Schematic - Assembly - Interactive Bill of Materials
- Default - Elecrow - FusionPCB - JLCPCB - PCBWay
Main components on the VC-LFOs
VC-LFOs bill of materials (BOM)
92 components, 49 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | OpAmp | DIP-8 | IC1 |
| 1 | LM723 LM324 | DIP-14 | IC2 |
| 1 | LM723 OpAmp | DIP-8 | IC3 |
| 2 | LM324 | DIP-14 | IC4, IC5 |
| 1 | Card_Connector | CardConnector | J1 |
| 8 | MonoJack | PanelConnector_1x02 | J2, J3, J4, J5, J6, J7, J8, J9 |
| 1 | 2K5 100k | PanelConnector_1x03 | P1 |
| 1 | 2K5 10k | Potentiometer_Trimmer | P2 |
| 1 | 2K5 1k | Potentiometer_Trimmer | P3 |
| 3 | 10k | Potentiometer_Trimmer | P4, P5, P6 |
| 1 | 1k | Potentiometer_Trimmer | P7 |
| 5 | 100k | PanelConnector_1x03 | P8, P9, P10, P11, P12 |
| 1 | CardBracket | CardBracket | MH1 |
| 2 | 2N3055 BC547C | TO-92 | T1, T2 |
| 1 | TRIANGLE1 | KEYSTONE_5001 | TP1 |
| 1 | OFFSET1 | KEYSTONE_5001 | TP2 |
| 1 | TRIANGLE2 | KEYSTONE_5001 | TP3 |
| 1 | OFFSET2 | KEYSTONE_5001 | TP4 |
| 2 | 1N4002 DUS | DUS | D1, D3 |
| 1 | 1N4002 DLED | PanelConnector_1x02 | D2 |
Show 29 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DLED | PanelConnector_1x02 | D4 |
| 4 | DUS | DUS | D5, D6, D7, D8 |
| 2 | 1µ | C_Rect_400_600 | C1, C2 |
| 2 | 100N 100µ | CP_Axial_600 | C3, C4 |
| 2 | 3K9 68k | R_Axial_Horizontal | R1, R2 |
| 3 | 2R7 100k | R_Axial_Horizontal | R3, R4, R6 |
| 1 | 2R7 47k | R_Axial_Horizontal | R5 |
| 4 | 1k | R_Axial_Horizontal | R7, R28, R29, R34 |
| 11 | 100k | R_Axial_Horizontal | R8, R30, R31, R38, R40, R41, R42, R43 +3 |
| 1 | 22K 100k | R_Axial_Horizontal | R9 |
| 1 | 22K 3k9 | R_Axial_Horizontal | R10 |
| 1 | 6K8 470R | R_Axial_Horizontal | R11 |
| 2 | 6K8 1k | R_Axial_Horizontal | R12, R13 |
| 1 | 6K8 22k | R_Axial_Horizontal | R14 |
| 1 | 680R 470R | R_Axial_Horizontal | R15 |
| 1 | 680R 47R | R_Axial_Horizontal | R16 |
| 1 | 2K7 47R | R_Axial_Horizontal | R17 |
| 1 | 8K2 22k | R_Axial_Horizontal | R18 |
| 2 | 2R7 68k | R_Axial_Horizontal | R19, R20 |
| 1 | 2K2 100k | R_Axial_Horizontal | R21 |
| 1 | 2K7 100k | R_Axial_Horizontal | R22 |
| 1 | 15K 47k | R_Axial_Horizontal | R23 |
| 1 | 150R 100k | R_Axial_Horizontal | R24 |
| 3 | 10k | R_Axial_Horizontal | R25, R27, R37 |
| 1 | 4k7 | R_Axial_Horizontal | R26 |
| 1 | 3k9 | R_Axial_Horizontal | R32 |
| 2 | 470R | R_Axial_Horizontal | R33, R35 |
| 1 | 10k | R_Axial_Horizontal_400 | R36 |
| 2 | 22k | R_Axial_Horizontal | R39, R44 |
VC-LFOs design files
The KiCad project lives in the Desval27/FormantKO repository on GitHub; these links point at the commit this page was built from.
VC-LFOs: common questions
How big is the VC-LFOs PCB?
The VC-LFOs measures 160 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the VC-LFOs?
92 components, from 49 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the VC-LFOs design files?
From the Desval27/FormantKO repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the VC-LFOs design in my own project?
Yes, under the terms of its MIT license, which Desval27 chose for the repository.
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