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Bumpstock

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

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

Bumpstock 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 141.8 × 128.5 mm, with 140 components from 60 distinct parts.

Other key parts include the 4070, 4015, TL074 and 40106. By type, the board carries 62 resistors, 24 diodes, 19 connectors, 16 switches, 10 capacitors and 5 ICs.

It belongs with the audio designs in this gallery.

From the project

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Q: This is three modules... A: In a trenchcoat, don't forget the trenchcoat...

Main components on the Bumpstock

40704015TL07440106

Bumpstock bill of materials (BOM)

140 components, 60 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
4070
74LS08
U1
1
4015
74LS86
U2
2
TL074
U6, U8
1
40106
U7
1
B2B_CONN
OPT EURO
J2
1
In 0
J3
1
Out 0
J4
1
In 1
J5
1
Out 1
J6
1
In 2
J7
1
Out 2
J8
1
In 3
J9
1
Out 3
J10
1
Logic 0 A
J12
1
Logic 0 B
J13
1
Logic 0 Out
J15
1
Logic 1 A
J16
1
Logic 1 B
J17
1
Logic 1 Out
J18
1
EXT
J19
Show 40 more
QtyPartRefs
1
Logic 2 Out
J21
1
Logic X
J23
1
Logic 3 Out
J24
4
Hold
SW1, SW9, SW10, SW11
4
Logic
SW2, SW3, SW4, SW5
4
Edge
SW6, SW29, SW30, SW31
4
Polarity
SW8, SW26, SW27, SW28
1
Trigger 0
MX17
1
Trigger 1
MX18
1
Trigger 2
MX19
1
Trigger 3
MX20
2
1N4148WS
1N4148W
D1, D2
4
Rise
D3, D13, D21, D23
4
Fall
D4, D14, D22, D24
1
Out 0
D5
3
Out
D6, D7, D8
1
Out MX 0
D9
6
1N4148W
D10, D12, D15, D17, D18, D20
1
Out MX 1
D11
1
Out MX 2
D16
1
Out MX 3
D19
1
1uF
C1
3
10nf
C2, C9, C12
1
100P
1uF
C3
3
100N
10nf
C4, C6, C8
2
100N
1uF
C5, C7
1
100K
1k
R1
1
10K
10k
R2
1
10K
100k
R3
1
33K
100k
R4
1
10K
1k
R5
1
47K
100k
R6
10
1k
R7, R19, R23, R27, R33, R37, R41, R45 +2
8
500R
R8, R11, R31, R32, R59, R60, R61, R62
8
2.7k
R9, R12, R22, R28, R36, R42, R48, R54
8
2.2k
R10, R13, R24, R29, R38, R43, R50, R55
8
150R
R14, R15, R16, R17, R18, R25, R39, R51
3
10k
R20, R34, R46
9
100k
R21, R26, R30, R35, R40, R44, R47, R52 +1
2
10R
R57, R58

Bumpstock 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.

Bumpstock: common questions

How big is the Bumpstock PCB?

The Bumpstock measures 141.8 × 128.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bumpstock?

140 components, from 60 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 Bumpstock 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 Bumpstock 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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