Skip to the content
PCBKitNew board
2 layers30 × 100 mmVCA, the printed circuit board in 3D

A modular synth project

Size
30 × 100 mm
Copper layers
2
Thickness
1.6 mm
Parts
18
Nets
15
Pads
44
Tracks, vias
48, 0
Pours
2
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
25 Apr 2025
Updated
31 Mar 2026

Overview

VCA is an open-source printed circuit board by PancakeLegend, from the PancakeLegend/HackSynth repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 30 × 100 mm with 18 parts on 15 nets, routed with 48 tracks and 0 vias.

Its parts include 5 resistors, 4 connectors, 2 transistors, 1 capacitor and 1 IC.

README

README.md

HackSynth

A MODULAR SYNTH PROJECT

PROJECT ORIGIN STORY

  • WE DISCOVERED A VERY AWESOME BREADBOARD SYNTH PROJECT CALLED BS-1, BY SOMEONE CALLED MAXWELL BECK.
  • WE DECIDED TO CREATE A MODULAR SYNTH BASED ON THIS PROJECT, BUT DESIGN PCBS RATHER THAN USING BREADBOARDS FOR EACH MODULE

WHAT IS THE PURPOSE OF THIS PROJECT?

WHAT'S THE VISION?

  • A LOW COST WAY FOR ENTHUSIASTS TO BREAK INTO THE WORLD OF MODULAR SYNTHESIS

WHO ARE WE

  • WE ARE MEMBERS AT THE CONNECTED COMMUNITY HACKERSPACE - A COMMUNITY FOR

Parts

18
QtyValueFootprintReferences
410kHackSynth:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR1, R2, R3, R4
2J172HackSynth:J172_TO-92_Inline - HandsolderQ1, Q2
1100kΩ TrimPotHackSynth:TrimPot_Bourns_3339S_HorizontalRV2
11kΩ TrimPotHackSynth:TrimPot_Bourns_3339S_HorizontalRV1
127kHackSynth:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR5
1CCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC1
1Conn_01x03_PinHackSynth:JST_PH_S3B-PH-K_1x03_P2.00mm_HorizontalJ4
1LT1006HackSynth:DIP-8_W7.62mm_LongPadsU1
1VCHackSynth:Jack_3.5mmJ2
1VINHackSynth:Jack_3.5mmJ1
1VOUTHackSynth:Jack_3.5mmJ3
1Val**HackSynth:CCHS Logo - 10mmRef**
1Val**HackSynth:PancakeLegend Logo - 10mmRef**

The 17 most common of 18 parts.

Questions

How big is the VCA PCB?

It measures 30 × 100 mm and has 2 copper layers, 1.6 mm thick.

What parts does the VCA use?

18 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the VCA KiCad files?

From the PancakeLegend/HackSynth repository on GitHub, at the commit this page was made from: the board is KiCAD/VCA/VCA.kicad_pcb and its schematic KiCAD/ASDR/ASDR.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the VCA design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

More from PancakeLegend/HackSynth

11
  • 2 layers50 × 100 mmChorus, the printed circuit board in 3D

    Chorus

    PancakeLegend/HackSynth

    A modular synth project

    89 parts2GPL-3.0
  • 2 layers50 × 100 mmDelay, the printed circuit board in 3D

    Delay

    PancakeLegend/HackSynth

    A modular synth project

    68 parts2GPL-3.0
  • 2 layers50 × 100 mmVCF, the printed circuit board in 3D

    VCF

    PancakeLegend/HackSynth

    A modular synth project

    52 parts2GPL-3.0
  • 2 layers50 × 100 mmVCO, the printed circuit board in 3D

    VCO

    PancakeLegend/HackSynth

    A modular synth project

    44 parts2GPL-3.0
  • 2 layers50 × 100 mmASDR - Old, the printed circuit board in 3D

    ASDR - Old

    PancakeLegend/HackSynth

    A modular synth project

    43 parts2GPL-3.0
  • 2 layers50 × 100 mmVCO, the printed circuit board in 3D

    VCO

    PancakeLegend/HackSynth

    A modular synth project

    42 parts2GPL-3.0
  • 2 layers30 × 100 mmMixer, the printed circuit board in 3D

    Mixer

    PancakeLegend/HackSynth

    A modular synth project

    24 parts2GPL-3.0
  • 4 layers30 × 100 mmPower, the printed circuit board in 3D

    Power

    PancakeLegend/HackSynth

    A modular synth project

    24 parts2GPL-3.0
  • 2 layers30 × 100 mmLFO, the printed circuit board in 3D

    LFO

    PancakeLegend/HackSynth

    A modular synth project

    23 parts2GPL-3.0
  • 2 layers30 × 100 mmMIDI to CV, the printed circuit board in 3D

    MIDI to CV

    PancakeLegend/HackSynth

    A modular synth project

    21 parts2GPL-3.0
  • 2 layers30 × 100 mmLFO, the printed circuit board in 3D

    LFO

    PancakeLegend/HackSynth

    A modular synth project

    16 parts2GPL-3.0

Similar boards

  • 2 layers27.9 × 16.5 mmPowerSSO-24 breakout, the printed circuit board in 3D

    PowerSSO-24 breakout

    rusefi/rusefi

    rusefi - GPL internal combustion engine control unit

    18 parts1.2k
  • 2 layers42.7 × 13.7 mmStm32-mini12864, the printed circuit board in 3D

    Stm32-mini12864

    VoronDesign/Voron-Hardware

    Cool Hardware designed by the Voron Design group

    18 parts1.1kGPL-3.0
  • 2 layers41.2 × 46.6 mmThumb cluster left, the printed circuit board in 3D

    Thumb cluster left

    JesusFreke/lalboard

    A 3D-printed keyboard inspired by the DataHand

    18 parts993
  • 2 layers44 × 51.3 mm4272MAVcoder R4, the printed circuit board in 3D

    4272MAVcoder R4

    hackclub/OnBoard

    💡 Join 1,000 teenagers and make your first PCB with a $100 grant!

    18 parts915
  • 2 layers28.3 × 14.3 mmTap Photosensor PCB, the printed circuit board in 3D

    Tap Photosensor PCB

    VoronDesign/Voron-Tap

    Tap is a nozzle-based z-probe for the V2 and Trident printer designs. The entire toolhead moves to trigger an optical switch. Tap offers many advantages:

    18 parts716GPL-3.0
  • 2 layers20.3 × 15.2 mmL0 stepper driver, the printed circuit board in 3D

    L0 stepper driver

    Luos-io/luos_engine

    Open-source and real-time orchestrator for cyber-physical-systems, to easily design, test and deploy embedded applications and digital twins.

    18 parts546MIT
  • 2 layersMooltipass, the printed circuit board in 3D

    Mooltipass

    limpkin/mooltipass

    Github repository dedicated to the mooltipass project

    18 parts531
  • 2 layers42.5 × 28.8 mmC5VRX JACK DIY V2, the printed circuit board in 3D

    C5VRX JACK DIY V2

    Twotoz/C5VRX

    Ultra-minimal, zero-CPU 5.8 GHz analog FPV video receiver using ESP32-C5 Wi-Fi 6 PHY MODEM_DIAG, BitScrambler WBFM demodulation & resistor DAC CVBS

    18 parts515GPL-3.0