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Eurorack Bus Board

butchwarns·Eurorack_Bus_Board

Eurorack Bus Board layout, top view — open source board by butchwarns
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About the Eurorack Bus Board

Eurorack Bus Board is an open source PCB design by butchwarns, published on GitHub. It is a 2-layer board measuring 295.9 × 39.4 mm, with 37 components from 9 distinct parts.

By type, the board carries 28 connectors, 3 diodes, 3 capacitors and 3 resistors.

It belongs with the audio designs in this gallery.

From the project

A simple but versatile bus board for modular synthesizers in the Eurorack format. Cheap and easy to build and with many slots for connecting modules with both 10-pin and 16-pin connectors.

A simple but versatile bus board for modular synthesizers in the Eurorack format. It's cheap and easy to build and has many slots for connecting modules with both 10-pin and 16-pin connectors.

I designed this bus board for use in my own modular synthesizer projects. Thought i'd share the board with other synth builders. (Gerber files in the repo can be directly uploaded to your pcb manufacturer of choice. Interactive BOM for easy assembly included.)

Eurorack Bus Board bill of materials (BOM)

37 components, 9 distinct parts.

QtyPartRefs
2
+5V
J1, J25
2
+12V
J2, J26
2
GND
J3, J27
2
-12V
J4, J28
10
Conn_02x08_Odd_Even
J5, J7, J9, J11, J13, J15, J17, J19 +2
10
Conn_02x05_Odd_Even
J6, J8, J10, J12, J14, J16, J18, J20 +2
3
LED
D1, D2, D3
3
47uF
C1, C2, C3
3
R
R1, R2, R3

Eurorack Bus Board design files

The KiCad project lives in the butchwarns/Eurorack_Bus_Board repository on GitHub; these links point at the commit this page was built from.

Eurorack Bus Board: common questions

How big is the Eurorack Bus Board?

The Eurorack Bus Board measures 295.9 × 39.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Eurorack Bus Board?

37 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Eurorack Bus Board design files?

From the butchwarns/Eurorack_Bus_Board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Eurorack Bus Board design in my own project?

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

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