4 layers165.1 × 127 mm Ouroboros, the printed circuit board in 3D

Ouroboros

A fuzzy delay and reverb using the Daisy Seed

Size: 165.1 × 127 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 95
Nets: 83
Pads: 298
Tracks, vias: 394, 172
Pours: 5
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 26 Oct 2024
Updated: 4 Feb 2025

Overview

Ouroboros is an open-source printed circuit board by echamman, from the echamman/Ouroboros repository on GitHub. It is a 4-layer board of 165.1 × 127 mm with 95 parts on 83 nets, routed with 394 tracks and 172 vias.

It is built around the B10K. Its parts include 35 resistors, 24 capacitors, 9 diodes, 5 connectors and 5 switches.

Main components

B10K
RES-TH_RK10J12E002LTH-3P SMT ROHSJLCPCB AssemblyUncategorised

README

README.md

Ouroboros is a fuzzy delay and reverb based on the Daisy Seed

Parts

Qty	Value	Footprint	References
17	1k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1, R4, R5, R6, R7, R11, R17, R18, R19, R20, R21, R22, R23, R31, R32, R35 +1
8	1u	Capacitor_THT:C_Rect_L7.0mm_W6.0mm_P5.00mm	C2, C10, C16, C17, C18, C19, C20, C22
6	0R	Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical	R25, R26, R27, R28, R29, R30
6	B10k	Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV2, RV3, RV4, RV5, RV6, RV7
6	LED	LED_THT:LED_D3.0mm	D4, D5, D6, D7, D8, D9
5	100n	Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm	C4, C7, C8, C9, C24
4	470k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R3, R9, R12, R24
4	AudioJack2	Connector_Audio:Jack_6.35mm_Neutrik_NMJ4HFD2_Horizontal	J1, J3, J4, J5
4	SW_Push	Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB	SW2, SW3, SW4, SW5
3	100p	Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm	C1, C15, C21
2	0R	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R33, R34
2	100R	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R13, R14
2	100k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R15, R16
2	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2, R10
2	1N4148	Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2
2	1n	Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm	C3, C23
2	1u	Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm	C12, C13
1	0.47u	Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm	C14
1	100u	Capacitor_THT:CP_Radial_D5.0mm_P2.50mm	C6
1	1N4001	Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal	D3
1	330n	Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm	C5
1	47u	Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm	C11
1	A10k	Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV1
1	B10K	Potentiometer_THT:Potentiometer_Alpha_RD902F-40-00D_Dual_Vertical	RV8
1	BF244A	Package_TO_SOT_THT:TO-92_Inline	Q1
1	Electrosmith_Daisy_Seed_Rev4	Module:Electrosmith_Daisy_Seed	A1
1	GND	TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm	H1
1	Jack-DC	Connector_BarrelJack:BarrelJack_CUI_PJ-063AH_Horizontal_CircularHoles	J2
1	LM78L05_TO92	Package_TO_SOT_THT:TO-92_Inline	U3
1	Opamp_Dual	Package_DIP:DIP-8_W7.62mm_Socket	U2
1	Opamp_Quad	Package_DIP:DIP-14_W7.62mm_Socket	U1
1	SCL	TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm	H3
1	SDA	TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm	H4
1	SW_DPDT_x2	Library:DPDT_Mini_Toggle	SW1
1	VCC	TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm	H2

Questions

How big is the Ouroboros PCB?

It measures 165.1 × 127 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Ouroboros use?

95 parts, built around the B10K. 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 Ouroboros KiCad files?

From the echamman/Ouroboros repository on GitHub, at the commit this page was made from: the board is KiCad/Ouroboros/Ouroboros.kicad_pcb and its schematic KiCad/Ouroboros/DaisySeed.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Ouroboros design in my own project?

Its repository states no licence, so its author keeps all rights: ask echamman 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/echamman-ouroboros" title="Ouroboros 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/echamman-ouroboros.jpg" alt="Ouroboros" width="1200" height="900">

A picture that opens the board, for a README

[![Ouroboros](https://pcbkit.io/embed/boards/echamman-ouroboros.jpg?size=s)](https://pcbkit.io/boards/echamman-ouroboros)

Source

Repository: echamman/Ouroboros
Board file: KiCad/Ouroboros/Ouroboros.kicad_pcb
Commit: 0e5ff43
Licence: Not stated

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