HardLabs

2600ish vcf

mohoyt·2600ish_vcf

2600ish vcf PCB layout, top view — open source board by mohoyt
Simulate this board

About the 2600ish vcf PCB

2600ish vcf is an open source PCB design by mohoyt, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 50 × 99.8 mm, with 95 components from 32 distinct parts.

Other key parts include the TL074 and LM3900N. By type, the board carries 45 resistors, 13 capacitors, 12 transistors, 10 connectors, 8 test points and 2 ICs.

It belongs with the audio designs in this gallery.

From the project

An ARP 2600 inspired low pass filter for Eurorack

This is a fully through hole component Eurorack voltage controlled low pass filter based on the one in the ARP 2600. There were different filters in the ARP 2600 at different times, this is the 4072 variety and is not a diode ladder filter like the early one.

Inspiration and the starting point for schematics for this filter taken from Eddy Bergman and Yusynth

2600ish vcf, from the project README
From the project README

Main components on the 2600ish vcf

TL074LM3900N

2600ish vcf bill of materials (BOM)

95 components, 32 distinct parts.

QtyPartRefs
1
TL074
U1
1
LM3900N
U2
12
2N3906
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +4
1
AUDIO IN 1
J1
1
AUDIO IN 2
J2
1
OUT
J3
1
V/OCT IN
J4
1
CV 1
J5
2
50K log
P1, P2
2
50K lin
P3, P5
1
100k
P4
1
Conn_01x10
CONN1
1
50K trimmer
T1
1
2k trimmer
T2
8
TestPoint
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8
2
1N5819
D1, D2
2
47uF
C1, C2
4
470pF
C3, C4, C5, C6
5
0.1uF
C7, C8, C11, C12, C13
2
22uF
C9, C10
Show 12 more
QtyPartRefs
2
10
R1, R2
9
100k
R3, R4, R5, R6, R31, R32, R34, R39 +1
7
1k
R7, R9, R14, R19, R24, R42, R46
8
220R
R8, R10, R11, R15, R16, R20, R21, R25
12
10k
R12, R13, R17, R18, R22, R23, R27, R28 +4
1
220R
R26
1
150k
R33
1
10k or 18k
R35
1
56k
R40
1
22k
R43
1
15k
R44
1
33k
R45

2600ish vcf design files

The KiCad project lives in the mohoyt/2600ish_vcf repository on GitHub; these links point at the commit this page was built from.

2600ish vcf: common questions

How big is the 2600ish vcf PCB?

The 2600ish vcf measures 50 × 99.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 2600ish vcf?

95 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the 2600ish vcf design files?

From the mohoyt/2600ish_vcf repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the 2600ish vcf design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which mohoyt chose for the repository.

Similar boards