HardLabs

Euclidean-VCA

cookiemonsternz·Euclidean-VCA·PCB/notHY-ESG.kicad_pcb

Euclidean-VCA PCB layout, top view — open source AVR/Arduino board by cookiemonsternz

About the Euclidean-VCA PCB

Euclidean-VCA is an open source AVR/Arduino PCB design by cookiemonsternz, published on GitHub. It is a 2-layer board measuring 107 × 60.6 mm, with 56 components from 25 distinct parts.

Its main chip is the ARDUINO_NANO_V3.X, from the AVR/Arduino family. Other key parts include the LM358, 1088AS and MAX7221XNG. By type, the board carries 23 resistors, 9 capacitors, 5 ICs, 4 connectors, 4 diodes and 3 transistors.

It belongs with the audio designs in this gallery.

From the project

Antanteatereater is a guitar/bass effect pedal which consists of a euclidean sequencer running into a VCA. It is based around the digital HY-ESG plugin, but using an analog envelope generator and vca, as well as being in a physical format.

Antanteatereater is a guitar/bass effect pedal which consists of a euclidean sequencer running into a VCA. It is based around the digital HY-ESG plugin, but using an analog envelope generator and vca, as well as being in a physical format.

The euclidean sequencer runs on an MCU, in this case an arduino nano, simply because I had one lying around. The pedal has 7 controllable inputs:

Euclidean-VCA, from the project README
From the project README

Main components on the Euclidean-VCA

LM3581088ASMAX7221XNGARDUINO_NANO_V3.X

Euclidean-VCA bill of materials (BOM)

56 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
3
LM358
U1, U2, U3
1
1088AS
U4
1
MAX7221XNG
MAX7221xNG
U5
1
ARDUINO_NANO_V3.X
Arduino_Nano_v3.x
A1
3
BC547
Q1, Q2, Q3
1
Input Jack
J1
1
Output Jack
J2
1
Jack-DC
J3
1
Tap Tempo
J4
2
100K
100k
RV3, RV4
3
RotaryEncoder
SW1, SW2, SW3
2
3362P-1-254LF
VR1, VR2
4
D
D1, D2, D3, D4
2
470NF
470nF
C1, C2
1
220NF
220nF
C3
2
47UF
47uF
C4, C6
1
100NF
100nF
C5
3
0.1UF
0.1uF
C7, C8, C9
6
100K
100k
R1, R11, R12, R13, R15, R20
3
220K
220k
R2, R18, R19
Show 5 more
QtyPartRefs
4
1k
R3, R7, R22, R23
7
10K
10k
R4, R5, R6, R10, R16, R17, R21
1
4.7K
4.7k
R8
1
20K
20k
R9
1
47K
47k
R14

Euclidean-VCA design files

The KiCad project lives in the cookiemonsternz/Euclidean-VCA repository on GitHub; these links point at the commit this page was built from.

Euclidean-VCA: common questions

What microcontroller does the Euclidean-VCA use?

The Euclidean-VCA is built around the ARDUINO_NANO_V3.X, from the AVR/Arduino family.

How big is the Euclidean-VCA PCB?

The Euclidean-VCA measures 107 × 60.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Euclidean-VCA?

56 components, from 25 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 Euclidean-VCA design files?

From the cookiemonsternz/Euclidean-VCA 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 Euclidean-VCA design in my own project?

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

Can I test firmware for the Euclidean-VCA without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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