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HacKeys

velvia-fifty·AudioThings·Workshop/HacKeys/HacKeys.kicad_pcb

HacKeys PCB layout, top view — open source board by velvia-fifty
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About the HacKeys PCB

HacKeys is an open source PCB design by velvia-fifty, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 100 × 100 mm, with 151 components from 62 distinct parts.

Other key parts include the 4070, 4015, TL074, NE5532 and LM339. By type, the board carries 65 resistors, 32 capacitors, 26 diodes, 12 ICs, 9 connectors and 2 transistors.

It belongs with the audio designs in this gallery.

From the project

DIY audio-related projects of questionable quality and dubious utility; delivered in 30 minutes or less or the next one is free

When you download this as a ZIP open AudioThings.kicad_pro, this is a panopticon project that contains the main resources and exists to handle some references that are common. Apparently KiCad and I have some foundational disagreement on how to misuse their software; this is primarily because I'm ignorant, but also they have incorrect opinions.

Use Kicad to drill down into other projects.

HacKeys, from the project README
From the project README

Main components on the HacKeys

40704015TL074NE5532LM339

HacKeys bill of materials (BOM)

151 components, 62 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
4070
TPS560430XDBVR
U1
1
4015
TL074
U2
2
4015
LM339
U3, U4
2
TL074
U6, U13
5
NE5532
U7, U8, U10, U11, U12
1
LM339
U9
2
BC857BDW1Ts
Q1, Q2
1
B2B_CONN
FRONT PANEL MAGIC
J1
1
OPT EURO
J6
1
FX SEND
J14
1
EXT Outs
J16
1
TO FX
J17
1
Out
J18
1
IN
J19
1
FROM FX
J20
1
FX RETURN
J21
1
10k
RV4
1
10k
RV5
1
-3dB Cut
SW2
1
Phones/Line
SW3
Show 42 more
QtyPartRefs
1
1N4148WS
LED (Red)
D1
1
1N4148WS
LED (Yellow)
D2
5
LED (Green)
D3, D14, D15, D17, D19
1
LED (Blue)
D4
2
LED (Red)
D10, D11
2
LED (Yellow)
D12, D13
10
1N4148WS
D16, D18, D20, D21, D22, D24, D26, D27 +2
2
Red +6dB
D23, D30
2
Yellow +3dB
D25, D31
1
12uH
L1
1
100nF
C1
1
4.7uF
C2
1
100P
0.1uF
C3
1
100N
15uF
C4
2
100N
100pF
C5, C8
2
100N
100nF
C6, C7
3
100pF
C9, C11, C13
2
47uf / 16v
C10, C12
18
100nF
C14, C15, C16, C17, C18, C19, C20, C21 +10
1
10uF
C32
1
100K
150R
R1
2
10K
150R
R2, R3
1
33K
100R
R4
1
10K
1.37M
R5
1
47K
255k
R6
1
178k
R7
1
22.1k
R8
11
1k
R13, R15, R16, R24, R35, R38, R40, R55 +3
3
20k
R14, R37, R52
4
2k
R17, R22, R39, R60
2
820R
R23, R25
1
200R
R26
4
180R
R27, R28, R45, R54
4
22k
R29, R30, R49, R57
4
3k3
R31, R32, R50, R59
8
10R
R33, R36, R41, R42, R53, R56, R62, R63
2
16k
R34, R51
6
100R
R43, R44, R46, R64, R65, R66
5
10k
R47, R48, R67, R68, R73
1
470R
R72
1
1M
R75
1
150k
R76

HacKeys design files

The KiCad project lives in the velvia-fifty/AudioThings repository on GitHub; these links point at the commit this page was built from.

HacKeys: common questions

How big is the HacKeys PCB?

The HacKeys measures 100 × 100 mm, has 2 copper layers and is 1 mm thick.

How many components are on the HacKeys?

151 components, from 62 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 HacKeys design files?

From the velvia-fifty/AudioThings 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 HacKeys design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

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