HardLabs

Busboard

vk2gpu·eurorack-modules·busboard/busboard.kicad_pcb

Busboard PCB layout, top view — open source board by vk2gpu

About the Busboard PCB

Busboard is an open source PCB design by vk2gpu, published on GitHub. It is a 2-layer board measuring 174 × 45.7 mm, with 25 components from 14 distinct parts.

By type, the board carries 9 connectors, 8 capacitors, 2 fuses, 2 diodes, 2 inductors and 2 resistors.

It belongs with the audio designs in this gallery.

From the project

Collection of Eurorack module schematics

Basic busboard with +/-12v input with polyfuses, ~50Hz low pass filter in an attempt to reduce noise coming from/going back towards the PSU, and power indicator LEDs. 5V is not provided, but 5V, CV, and Gate pins are all connected. Supports up to 8 modules, should be able to handle up to 1A on each rail.

Probably overkill, but a bit nicer than stripboard!

Busboard bill of materials (BOM)

25 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Conn_01x03
J1
7
Conn_02x08_Odd_Even
J2, J3, J4, J5, J7, J8, J9
1
EURO_PWR_2X5
Conn_02x08_Odd_Even
J6
2
Polyfuse
F1, F2
2
1N4004
LED
D1, D2
2
10mH
L1, L2
1
10U
2000uF
C1
1
100P
2000uF
C2
2
47N
270uF
C3, C4
2
47N
2000uF
C5, C6
1
220U
270uF
C7
1
220N
270uF
C8
1
680
1k
R1
1
150K
1k
R2

Busboard design files

The KiCad project lives in the vk2gpu/eurorack-modules repository on GitHub; these links point at the commit this page was built from.

Busboard: common questions

How big is the Busboard PCB?

The Busboard measures 174 × 45.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Busboard?

25 components, from 14 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 Busboard design files?

From the vk2gpu/eurorack-modules repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Busboard design in my own project?

The repository has no license, so all rights stay with vk2gpu. Use it as a reference, and ask the author before reusing the design.

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