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MAIN

aliqut·3xosc·KiCad/Main/MAIN.kicad_pcb

MAIN PCB layout, top view — open source board by aliqut
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About the MAIN PCB

MAIN is an open source PCB design by aliqut, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 99.6 × 99.8 mm, with 92 components from 22 distinct parts.

Other key parts include the 40106 and TL074. By type, the board carries 52 resistors, 10 capacitors, 6 transistors, 5 diodes, 4 ICs and 3 connectors.

It belongs with the audio designs in this gallery.

From the project

3xOsc | 3 VCO Eurorack Module

This is a Eurorack format VCO synth module, based on Moritz Klein's VCO design.

Each of the 3 oscillators has: - Coarse and fine tuning knobs - a PWM (Pulse-width Modulation) knob - a FM (Frequency Modulation) knob and CV (Control Voltage) input

Controls unique to each oscillator: - Oscillator 1: - Saw/Pulse switch - Oscillator 2: - Saw/Pulse wave mix knob - Oscillator 3: - Saw/Pulse switch - PWM modulation input, and modulation amount knob

MAIN, from the project README
From the project README

Main components on the MAIN

40106TL074

MAIN bill of materials (BOM)

92 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
40106
U1
3
TL074
U2, U3, U4
3
BC558
Q1, Q3, Q5
3
BC548
Q2, Q4, Q6
2
CONN_01X32_SOCKET
Conn_01x32_Socket
J1, J3
1
CONN_02X05_ODD_EVEN
Conn_02x05_Odd_Even
J2
12
10K
10k
TH1, TH2, TH3, TH4, TH5, TH6, TH7, TH8 +4
5
D
D1, D2, D3, D4, D5
3
2.2NF
2.2nF
C1, C2, C7
5
1UF
1uF
C3, C4, C5, C6, C8
2
10UF
10uF
C9, C10
23
100K
R1, R4, R5, R7, R11, R13, R16, R17 +15
3
1K5
R2, R9, R35
3
1K
R3, R10, R36
6
1M
R6, R8, R12, R14, R38, R40
2
200K
200k
R15, R19
3
33K
33k
R18, R23, R45
5
20K
20k
R24, R26, R29, R31, R33
2
68K
R42, R48
1
14K
R44
Show 2 more
QtyPartRefs
2
1K
R49, R50
2
10R
R51, R52

MAIN design files

The KiCad project lives in the aliqut/3xosc repository on GitHub; these links point at the commit this page was built from.

MAIN: common questions

How big is the MAIN PCB?

The MAIN measures 99.6 × 99.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the MAIN?

92 components, from 22 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 MAIN design files?

From the aliqut/3xosc 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 MAIN design in my own project?

Yes, under the terms of its GPL-3.0 license, which aliqut chose for the repository.

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