HardLabs

Fuzz pedal 11

matjutras·faultfinder·devices/fuzz_pedal_11/fuzz_pedal_11.kicad_pcb

Fuzz pedal 11 PCB layout, top view — open source board by matjutras

About the Fuzz pedal 11 PCB

Fuzz pedal 11 is an open source PCB design by matjutras, published on GitHub. It is a 2-layer board measuring 81.3 × 62.4 mm, with 68 components from 34 distinct parts.

By type, the board carries 31 resistors, 17 capacitors, 11 diodes, 4 transistors, 3 switches and 1 connector.

It belongs with the audio and test & measurement designs in this gallery.

From the project

Educational electronics trainer: auto-generated schematics and 3D PCB views where you find an injected fault using a simulated multimeter, backed by real KiCad imports and ngspice simulation.

See CLAUDE.md for architecture and conventions.

Requires ngspice on PATH (sudo apt-get install ngspice) and kicad for kicad-cli (sudo apt-get install kicad).

map.json and faults.json under each devices//` are generated, not committed (see CLAUDE.md) — after a fresh checkout, regenerate them once per device:

Fuzz pedal 11 bill of materials (BOM)

68 components, 34 distinct parts.

QtyPartRefs
1
MPSA42
Q1
3
2N5089
Q2, Q3, Q4
1
5 pin header
J1
2
SPDT on-off-on
SW1, SW2
1
SPDT
SW4
1
?
RV1
5
1N914
D1, D2, D3, D4, D5
3
Ger.
D6, D7, D8
2
Red LED
D9, D10
1
LED 5mm
D11
2
0.1u
C1, C9
3
470p
C2, C5, C8
1
0.47u
C3
5
47n
C4, C6, C7, C12, C14
2
10n
C10, C11
1
1u
C13
1
6n8
C15
1
680p
C16
1
?
C17
1
2M
R0
Show 14 more
QtyPartRefs
1
39k
R1
4
100k
R2, R9, R14, R21
4
470k
R3, R10, R15, R22
3
180R
R4, R12, R16
5
10k
R5, R11, R17, R19, R24
2
B100k
R6, R20
1
1k
R7
2
6.2k
R8, R13
2
2.2k
R18, R23
1
A250k
R25
2
100k
R26, R27
1
4k
R29
1
B25k
R30
1
390k
R31

Fuzz pedal 11 design files

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

Fuzz pedal 11: common questions

How big is the Fuzz pedal 11 PCB?

The Fuzz pedal 11 measures 81.3 × 62.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fuzz pedal 11?

68 components, from 34 distinct parts. The full bill of materials is listed on this page.

Where can I download the Fuzz pedal 11 design files?

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

Can I use the Fuzz pedal 11 design in my own project?

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

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