2 layers58.4 × 91.7 mm Dynafuzz, the printed circuit board in 3D

Dynafuzz

Effects pedals and stomboxes

Size: 58.4 × 91.7 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 115
Nets: 84
Pads: 308
Tracks, vias: 19, 0
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 24 Apr 2022
Updated: 3 Nov 2026

Overview

Dynafuzz is an open-source printed circuit board by rabidaudio, from the rabidaudio/effects repository on GitHub. It is a 2-layer board of 58.4 × 91.7 mm with 115 parts on 84 nets, routed with 19 tracks and 0 vias.

It is built around the LM13700M, MAX1044ESA+ and DMMT5401. Its parts include 45 resistors, 26 capacitors, 9 transistors, 6 diodes and 5 ICs.

Main components

README

README.md

Custom effects pedals

Homemade guitar/bass effects pedals.

License

Schematics, board layouts, documentation, etc. is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Creative Commons License

If you're interested in commercial use, please ask first.

Any source code is licensed under MIT.

Notes

text

jacks: neutrik from shared effects lib
capacitors: Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm
resistors (flush): Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal
alpha 9mm pots: Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical

CASE:
outer dims: 120x65 mm
wall depth: 2 mm
usable inner space: 102x60 mm
screw area: 8.6x8.6 mm

center point: 160.02 x 101.6 mm

pots minimum 12mm from top
stomp switch ~34mm from bottom

Parts

115

Qty	Value	Footprint	References
18	100n	Capacitor_SMD:C_0805_2012Metric	C1, C4, C5, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C23, C24, C26 +2
12	~	TestPoint:TestPoint_Pad_D1.5mm	TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12
8	100k	Resistor_SMD:R_0805_2012Metric	R3, R14, R22, R23, R24, R25, R37, R42
6	10k	Resistor_SMD:R_0805_2012Metric	R5, R15, R30, R31, R32, R33
5	D	Diode_SMD:D_0805_2012Metric	D2, D3, D4, D5, D6
4	470k	Resistor_SMD:R_0805_2012Metric	R4, R13, R38, R43
4	Q_NPN	Package_TO_SOT_THT:TO-92_Inline	Q1, Q2, Q8, Q9
3	100	Resistor_SMD:R_0805_2012Metric	R6, R40, R45
3	10u	Capacitor_SMD:CP_Elec_5x3	C2, C6, C7
3	3.3k	Resistor_SMD:R_0805_2012Metric	R1, R12, R16
3	470p	Capacitor_SMD:C_0805_2012Metric	C3, C22, C25
2	1.2k	Resistor_SMD:R_0805_2012Metric	R7, R8
2	10K	Resistor_SMD:R_0805_2012Metric	R19, R20
2	10n	Capacitor_SMD:C_0805_2012Metric	C10, C11
2	18k	Resistor_SMD:R_0805_2012Metric	R39, R44
2	1K	Resistor_SMD:R_0805_2012Metric	R17, R35
2	1k	Resistor_SMD:R_0805_2012Metric	R28, R29
2	220	Resistor_SMD:R_0805_2012Metric	R10, R11
2	220k	Resistor_SMD:R_0805_2012Metric	R26, R27
2	2N5088	Package_TO_SOT_THT:TO-92_Inline	Q3, Q4
2	33k	Resistor_SMD:R_0805_2012Metric	R2, R9
2	8.2k	Resistor_SMD:R_0805_2012Metric	R36, R41
2	DMMT5401	Package_TO_SOT_SMD:SOT-23-6	Q6, Q7
1	15k	Resistor_SMD:R_0805_2012Metric	R21
1	3.3M	Resistor_SMD:R_0805_2012Metric	R18
1	AudioJack_IN	_effects_shared_footprints:Jack_6.35mm_Neutrik_NMJ6HCD3_Horizontal	J1
1	AudioJack_OUT	_effects_shared_footprints:Jack_6.35mm_Neutrik_NMJ6HCD3_Horizontal	J2
1	Jack-DC	Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical	J3
1	LED	LED_THT:LED_D3.0mm	D1
1	LM13700	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U5
1	LM317_TO-220	Package_TO_SOT_THT:TO-220-3_Vertical	U3
1	LM337_TO220	Package_TO_SOT_THT:TO-220-3_Vertical	U4
1	MAIN_BIC	Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical	J4
1	MAX1044	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U2
1	MPS2907A	Package_TO_SOT_THT:TO-92_Inline	Q5
1	R	Resistor_SMD:R_0805_2012Metric	R34
1	R_INTENSITY_B100K	_effects_shared_footprints:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV4
1	R_MID-B25K	_effects_shared_footprints:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV1
1	R_SUSTAIN-A100K	_effects_shared_footprints:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV6
1	R_THRESHOLD_B1M	_effects_shared_footprints:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV5
1	R_TONE-B100K	_effects_shared_footprints:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV2
1	R_VOL-A100K	_effects_shared_footprints:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV3
1	SWITCH_BIC	Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical	J5
1	SW_3PDT_x3	_effects_shared_footprints:Stompbox Switch	SW1
1	TL074	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U1

Questions

How big is the Dynafuzz PCB?

It measures 58.4 × 91.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Dynafuzz use?

115 parts, built around the LM13700M, MAX1044ESA+ and DMMT5401. 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 Dynafuzz KiCad files?

From the rabidaudio/effects repository on GitHub, at the commit this page was made from: the board is dist/dynafuzz/dynafuzz.kicad_pcb and its schematic ab-pedal/ab-pedal.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Dynafuzz design in my own project?

Its repository states no licence, so its author keeps all rights: ask rabidaudio before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/rabidaudio-effects-dynafuzz" title="Dynafuzz in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/rabidaudio-effects-dynafuzz.jpg" alt="Dynafuzz" width="1200" height="900">

A picture that opens the board, for a README

[![Dynafuzz](https://pcbkit.io/embed/boards/rabidaudio-effects-dynafuzz.jpg?size=s)](https://pcbkit.io/boards/rabidaudio-effects-dynafuzz)

Source

Repository: rabidaudio/effects
Board file: dist/dynafuzz/dynafuzz.kicad_pcb
Commit: 488d5a1
Licence: Not stated

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