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Anthracite PCB (Bottom)

trope-oshw·anthracite·hardware/bottom/anthracite-bottom.kicad_pcb

Anthracite PCB (Bottom) layout, top view — open source STM32 board by trope-oshw
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About the Anthracite PCB (Bottom)

Anthracite PCB (Bottom) is an open source STM32 PCB design by trope-oshw, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 60 × 73.5 mm, with 208 components from 40 distinct parts.

Its main chip is the STM32F030C8T6, from the STM32 family. Other key parts include the 78L05G-AB3-R, XC6206P332MR-G, M24C64-RMN6TP, SN74HCT04DR and SN74LVC1G66DCKR. By type, the board carries 107 resistors, 53 capacitors, 24 diodes, 12 transistors, 9 ICs and 2 switches.

It belongs with the audio designs in this gallery.

From the project

MIDI-controllable fuzz pedal — open hardware (CERN-OHL-S v2) / firmware (GPLv3)

A MIDI-controllable analogue fuzz pedal.

Fuzz pedals are awkward to live with: the sound changes when you swap guitars, a wah in front of one loses its range, and few switchers can drive one. Most of that traces back to a single cause — the input impedance of a fuzz is low, and it is fixed. Anthracite lets you choose the load your pickup sees, and keeps the whole signal path analogue: it is switched by analogue switches rather than mechanical contacts, and the microcontroller only moves those switches and never touches the audio.

Anthracite PCB (Bottom), from the project README
From the project README

Main components on the Anthracite PCB (Bottom)

78L05G-AB3-RXC6206P332MR-GSTM32F030C8T6M24C64-RMN6TPSN74HCT04DRSN74LVC1G66DCKR

Anthracite PCB (Bottom) bill of materials (BOM)

208 components, 40 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
78L05G-AB3-R
L78L05_SOT89
UTC
U101, U102
1
XC6206P332MR-G
Torex
U103
1
STM32F030C8T6
STMicro
U105
1
M24C64-RMN6TP
STMicro
U106
1
SN74HCT04DR
TI
U107
3
SN74LVC1G66DCKR
TI
U108, U109, U110
2
SS8050(RANGE:200-350)
SS8050
JSCJ
Q101, Q103
1
SS8550 Y2(RANGE:200-350)
SS8550 Y2
JSCJ
Q102
9
MMDT2227
R+O
Q201, Q301, Q401, Q501, Q601, Q701, Q801, Q901 +1
2
TS-1088-AR02016
SW_SPST
XUNPU
SW101, SW103
19
KT-0603R
LED(RED)
Hubei KENTO Elec
D101, D103, D106, D108, D110, D111, D112, D113 +11
4
1N5819WS
Guangdong Hottech
D102, D104, D105, D107
1
BAV99,215
BAV99
Nexperia
D109
1
BLM18PG121SN1D
FB101
9
CL21B105KBFNNNE
1u
Samsung Electro-Mechanics
C101, C103, C112, C113, C115, C116, C117, C118 +1
2
50TZV47M6.3X8
47u
Rubycon
C102, C119
4
35TZV100M6.3X8
100u
Rubycon
C104, C109, C114, C121
1
10u
C105
2
0.47u
C106, C110
2
0.1u
C107, C111
Show 20 more
QtyPartRefs
1
GRM21BR61H106KE43L
10u
Murata
C108
2
4.7u
C122, C126
19
0.1u
C123, C124, C125, C127, C128, C129, C130, C131 +11
2
100p
C139, C141
9
0.022u
C201, C301, C401, C501, C601, C701, C801, C901 +1
3
2.2k
R101, R107, R113
2
6.8k
R102, R108
3
3k3
R103, R133, R144
5
1k5
R104, R134, R135, R136, R137
29
10k
R105, R106, R109, R119, R120, R121, R122, R125 +21
1
10k
R110
1
3.3k
R111
1
470
R112
2
33
R114, R123
19
3k3
R115, R116, R117, R118, R127, R130, R139, R140 +11
2
1k
R124, R129
1
220
R128
2
120
R131, R132
27
22k
R204, R205, R207, R304, R305, R307, R404, R405 +19
9
33k
R206, R306, R406, R506, R606, R706, R806, R906 +1

Anthracite PCB (Bottom) design files

The KiCad project lives in the trope-oshw/anthracite repository on GitHub; these links point at the commit this page was built from.

Anthracite PCB (Bottom): common questions

What microcontroller does the Anthracite PCB (Bottom) use?

The Anthracite PCB (Bottom) is built around the STM32F030C8T6, from the STM32 family.

How big is the Anthracite PCB (Bottom)?

The Anthracite PCB (Bottom) measures 60 × 73.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Anthracite PCB (Bottom)?

208 components, from 40 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 Anthracite PCB (Bottom) design files?

From the trope-oshw/anthracite 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 Anthracite PCB (Bottom) design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which trope-oshw chose for the repository.

Can I test firmware for the Anthracite PCB (Bottom) without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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