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Expander2 V1.0

VoltageFoundryMod·ForgeSeries-Hardware·Kicad/Expander2_V1.0/Expander2_V1.0.kicad_pcb

Expander2 V1.0 PCB layout, top view — open source board by VoltageFoundryMod

About the Expander2 V1.0 PCB

Expander2 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 40 components from 32 distinct parts.

Other key parts include the MCP6004, L78M05CDT and MCP4728A0. By type, the board carries 23 resistors, 6 connectors, 4 capacitors 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.

Expander2 V1.0, from the project README
From the project README

Main components on the Expander2 V1.0

MCP6004L78M05CDTMCP4728A0

Expander2 V1.0 bill of materials (BOM)

40 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP6004
U1
1
L78M05CDT
MCP6001-OT
U2
1
MCP4728A0
MCP4728
U5
1
LL1009-2A, 2.54MM 2*3PIN HEADER,LENGTH=20MM
Expander
Cixi Langlin
J2
1
WQP-WQP518MA
Out 5
Wenzhou QingPu Electronics Co
J4
1
WQP-WQP518MA
Out 6
Wenzhou QingPu Electronics Co
J5
1
WQP-WQP518MA
Out 7
Wenzhou QingPu Electronics Co
J6
1
WQP-WQP518MA
Out 8
Wenzhou QingPu Electronics Co
J7
1
WQP-WQP518MA
IN4
Wenzhou QingPu Electronics Co
J8
4
2k
RV1, RV2, RV3, RV4
1
10U
10u
C2
1
100N
100n
C3
1
100N
100p
C15
1
220N
1n
C16
2
10K
10k
R3, R5
2
6K8
6k8
R4, R6
1
10K
9.1k
R7
1
6K8
9.1k
R8
2
470
R9, R10
1
470
10k
R11
Show 12 more
QtyPartRefs
1
470
6k8
R12
1
9.1K
10k
R13
1
9.1K
6k8
R14
2
9.1K
9.1k
R15, R16
1
1.5K
470
R17
1
100K
470
R18
1
200K
200k
R19
1
100K
100k
R20
1
200K
33k
R21
1
100K
100
R22
2
4.7K
4.7k
R23, R25
1
200K
4.7k
R24

Expander2 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.

Expander2 V1.0: common questions

How big is the Expander2 V1.0 PCB?

The Expander2 V1.0 measures 19 × 99 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Expander2 V1.0?

40 components, from 32 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 Expander2 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 Expander2 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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