HardLabs

Backbone

andreapiccini·spaghettilab-community·hardware/backbone/backbone.kicad_pcb

Backbone PCB layout, top view — open source ESP32 board by andreapiccini
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About the Backbone PCB

Backbone is an open source ESP32 PCB design by andreapiccini, published on GitHub under the Custom license license. It is a 4-layer board measuring 31.4 × 68.9 mm, with 60 components from 33 distinct parts.

Its main chip is the ESP32-S3-MINI-1, from the ESP32 family. Other key parts include the SN65HVD230DR, AP2112K-3.3TRG1, G3VM-61VY3(TR), LQW18CNR47J00D and ST25R100. By type, the board carries 31 capacitors, 14 resistors, 8 ICs, 4 diodes, 1 transistor and 1 crystal.

From the project

SpaghettiLab is an open modular hardware and software ecosystem for rapid prototyping, embedded systems development, and product innovation.

The Community repository tracks the editable KiCad projects required to study, modify and build the public hardware: project, schematic, PCB, symbol, footprint and related source assets.

Generated manufacturing outputs are intentionally not tracked. This includes production/ directories, Gerber and drill files, pick-and-place exports, BOMs, netlists, fabrication ZIP archives and fabrication-toolkit local options. Generate them from the reviewed KiCad sources when needed; official manufacturing releases and production controls are maintained separately.

Main components on the Backbone

SN65HVD230DRAP2112K-3.3TRG1G3VM-61VY3(TR)LQW18CNR47J00DST25R100BLM18PG471SZ1DESP32-S3-MINI-1

Backbone bill of materials (BOM)

60 components, 33 distinct parts.

QtyPartRefs
1
SN65HVD230DR
TI(德州仪器)
U2
1
AP2112K-3.3TRG1
DIODES(美台)
U4
1
G3VM-61VY3(TR)
G3VM-61VY3
OMRON(欧姆龙)
U8
2
LQW18CNR47J00D
470nH DCR=450m
muRata(村田)
U11, U13
1
ST25R100
U15
1
BLM18PG471SZ1D
muRata(村田)
U17
1
ESP32-S3-MINI-1
U19
1
AO3401A
AOS
Q2
1
NX2016SA 27.12MHz
X1
1
TYPEC-324G-BCP24
XUNPU(讯普)
USB1
3
LED
D2, D3, D5
1
SS54
SS54_C22452
MDD(辰达半导体)
D4
1
CL05B104KA5NNNC
100nF
C1
2
1uF
C5, C9
2
GRT1555C1H221FA02D
200pF 1%
C13, C16
4
10pF
C18, C20, C46, C54
3
100nF
C23, C73, C74
2
33pF 2%
C28, C32
6
10nF
C30, C35, C37, C58, C63, C65
4
2.2uF/10V
C33, C39, C41, C70
Show 13 more
QtyPartRefs
1
GRM1885C1H241GA01J
220pF
C43
2
150pF
C48, C51
1
220pF
C55
2
1uF/10V
C60, C72
1
4.7uF/10V
C62
1
RT0603FRE101KL
470k
R4
1
RT0603FRE101KL
1k
R5
1
RT0603FRE101KL
120R
R8
2
1R5
R11, R14
2
4.7k
R15, R16
2
33R
R17, R18
2
5.1k
R20, R23
3
330R
R21, R22, R24

Backbone design files

The KiCad project lives in the andreapiccini/spaghettilab-community repository on GitHub; these links point at the commit this page was built from.

Backbone: common questions

What microcontroller does the Backbone use?

The Backbone is built around the ESP32-S3-MINI-1, from the ESP32 family.

How big is the Backbone PCB?

The Backbone measures 31.4 × 68.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Backbone?

60 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Backbone design files?

From the andreapiccini/spaghettilab-community repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Backbone design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Backbone without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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