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AVB-Eurorack

scrambletools·AVB-Eurorack

AVB-Eurorack PCB layout, top view — open source board by scrambletools

About the AVB-Eurorack PCB

AVB-Eurorack is an open source PCB design by scrambletools, published on GitHub. It is a 2-layer board measuring 84.7 × 30 mm, with 28 components from 19 distinct parts.

Other key parts include the K7805-1000R3 and TL072. By type, the board carries 9 connectors, 7 capacitors, 6 resistors, 2 ICs, 2 diodes and 2 inductors.

It belongs with the audio, dev boards & breakouts and displays & leds designs in this gallery.

From the project

Eurorack interposer for the Scramble Hat-trik: bus power, 180° hat stacking, panel jacks

A 2-layer PCB (~85 × 30 mm) that turns the ESP32-P4-ETH carrier + Scramble Hat-trik stack into a eurorack module: rack power, panel audio I/O, and a display socket, with no changes to either board.

1. Eurorack power (J1, 2×5 shrouded IDC): +12 V from the bus through reverse-polarity protection (D1) and a ferrite (FB1) into a K7805-1000R3 buck (U1) → 5 V injected into the mezzanine, powering the carrier and the hat. −12 V feeds the output amplifier (D2 + FB2 conditioned). 2. Hat interposer (J2/J3 bottom-side sockets down to the carrier; J4/J5 headers up to the hat): a full 7+7 pass-through…

AVB-Eurorack, from the project README
From the project README

Main components on the AVB-Eurorack

K7805-1000R3TL072

AVB-Eurorack bill of materials (BOM)

28 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
K7805-1000R3
U1
1
TL072
U2
1
Eurorack 10-pin power
J1
1
to carrier row A (female 8.5mm)
J2
1
to carrier row B (female 8.5mm)
J3
1
to hat, above J2 (male)
J4
1
to hat, above J3 (male)
J5
2
AudioJack2_SwitchT
J6, J7
1
mates hat J7 (or wires to hat pads)
J8
1
display socket
J10
2
SS34
D1, D2
1
600R@100MHz 2A
FB1
1
600R@100MHz
FB2
3
22uF 25V
C1, C3, C7
4
100nF
C2, C4, C5, C6
2
100k
R2, R7
2
39k
R3, R5
1
10k
R4
1
1k
R6

AVB-Eurorack design files

The KiCad project lives in the scrambletools/AVB-Eurorack repository on GitHub; these links point at the commit this page was built from.

AVB-Eurorack: common questions

How big is the AVB-Eurorack PCB?

The AVB-Eurorack measures 84.7 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AVB-Eurorack?

28 components, from 19 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 AVB-Eurorack design files?

From the scrambletools/AVB-Eurorack 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 AVB-Eurorack design in my own project?

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

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