Multibus frontboard

coriolisinstruments·EurorackModules·Multibus/hardware/Multibus/Multibus_frontboard.kicad_pcb

Multibus frontboard PCB layout, top view — open source board by coriolisinstruments
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About the Multibus frontboard PCB

Multibus frontboard is an open source PCB design by coriolisinstruments, published on GitHub. It is a 2-layer board measuring 526 × 20 mm, with 30 components from 3 distinct parts.

It belongs with the audio designs in this gallery.

From the project

Open-source eurorack synthesizer modules and related stuff.

A eurorack module for the distribution of CV signals. In essence it is 9 1-to-3 buffered multipes with signal indicators in grouped in three channels of three multiples. The "twist" is that every single multiple can be switch to work solo, so when you are not using the multiples as a distribution bus, you can still use them for something else.

You can use multiple inputs to combine signals (triggers, lfo's) like you would with a mixer and distribute these signals around your case. The Multibus has a variable gain for each channel, with the gain ranging from 0 to 1 (unity gain). This way you…

Multibus frontboard, from the project README
From the project README

Multibus frontboard bill of materials (BOM)

30 components, 3 distinct parts.

QtyPartRefs
9
Conn_01x12
J_FB1.1, J_FB1.2, J_FB1.3, J_FB2.1, J_FB2.2, J_FB2.3, J_FB3.1, J_FB3.2 +1
3
Conn_01x02
J_FB_RV1, J_FB_RV2, J_FB_RV3
18
LED
D1.1.neg.1, D1.1.pos.1, D1.2.neg.1, D1.2.pos.1, D1.3.neg.1, D1.3.pos.1, D2.1.neg.1, D2.1.pos.1 +10

Multibus frontboard design files

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

Multibus frontboard: common questions

How big is the Multibus frontboard PCB?

The Multibus frontboard measures 526 × 20 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Multibus frontboard?

30 components, from 3 distinct parts. The full bill of materials is listed on this page.

Where can I download the Multibus frontboard design files?

From the coriolisinstruments/EurorackModules repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Multibus frontboard design in my own project?

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

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