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Expander1 V1.0

VoltageFoundryMod·ForgeSeries-Hardware·Kicad/Expander-4Outs1In_V1.0/Expander1_V1.0.kicad_pcb

Expander1 V1.0 PCB layout, top view — open source board by VoltageFoundryMod

About the Expander1 V1.0 PCB

Expander1 V1.0 is an open source PCB design by VoltageFoundryMod, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 19 × 99 mm, with 50 components from 19 distinct parts.

Other key parts include the MCP6004, MCP6001-OT and MCP4728A1. By type, the board carries 28 resistors, 11 capacitors, 4 transistors and 3 ICs.

It belongs with the displays & leds designs in this gallery.

From the project

⚠️ I'm currently finishing a redesign of the hardware and will be ready soon, if you plan to build it, message me thru an issue. ⚠️

⚠️ I'm currently finishing a redesign of the hardware and will be ready soon, if you plan to build it, message me thru an issue. ⚠️

This repository hosts the Forge series of modules for the Eurorack format. The Forge series is a collection of firmwares developed for the Forge V1 platform based on the Seeeduino Xiao and MCP4725 DAC and Forge V2 hardware based on the Seeeduino Xiao RP2040 anf the MCP4728 DAC.

Expander1 V1.0, from the project README
From the project README

Main components on the Expander1 V1.0

MCP6004MCP6001-OTMCP4728A1

Expander1 V1.0 bill of materials (BOM)

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

QtyPartRefs
1
MCP6004
U1
1
MCP6001-OT
U2
1
MCP4728A1
U5
4
BC847
Q2, Q3, Q4, Q5
4
2k
RV1, RV2, RV3, RV4
2
10U
10u
C2, C5
3
100N
100n
C3, C4, C6
1
100P
100p
C15
1
1n
C16
4
33P
33p
C18, C19, C20, C21
4
10K
10k
R3, R5, R11, R13
4
6K8
6k8
R4, R6, R12, R14
4
9.1K
9.1k
R7, R8, R15, R16
4
470
R9, R10, R17, R18
1
200K
200k
R19
5
100K
100k
R20, R26, R28, R30, R32
1
33K
33k
R21
1
100
R22
4
330
R27, R29, R31, R33

Expander1 V1.0 design files

The KiCad project lives in the VoltageFoundryMod/ForgeSeries-Hardware repository on GitHub; these links point at the commit this page was built from.

Expander1 V1.0: common questions

How big is the Expander1 V1.0 PCB?

The Expander1 V1.0 measures 19 × 99 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Expander1 V1.0?

50 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 Expander1 V1.0 design files?

From the VoltageFoundryMod/ForgeSeries-Hardware 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 Expander1 V1.0 design in my own project?

Yes, under the terms of its GPL-3.0 license, which VoltageFoundryMod chose for the repository.

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