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28x28

greyltc·hardware·KiCAD/muxAdapter/28x28.kicad_pcb

28x28 PCB layout, top view — open source board by greyltc
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About the 28x28 PCB

28x28 is an open source PCB design by greyltc, published on GitHub under the CERN-OHL-1.2 license. It is a 4-layer board measuring 36 × 36 mm, with 21 components from 7 distinct parts.

Other key parts include the MAX14662 and PCF8574. By type, the board carries 12 connectors, 6 resistors and 3 ICs.

It belongs with the power & battery designs in this gallery.

From the project

Hardware disign files, for use with the KiCAD EDA

Main components on the 28x28

MAX14662PCF8574

28x28 bill of materials (BOM)

21 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
MAX14662
U1, U2
1
PCF8574
U3
8
CONN_01X02
P39, P40, P41, P42, P43, P44, P45, P46
2
CONN_01X09
P47, P50
1
CONN_01X10
P48
1
CONN_01X10
P49
6
R
R1, R2, R3, R4, R5, R6

28x28 design files

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

28x28: common questions

How big is the 28x28 PCB?

The 28x28 measures 36 × 36 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the 28x28?

21 components, from 7 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 28x28 design files?

From the greyltc/hardware repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the 28x28 design in my own project?

Yes, under the terms of its CERN-OHL-1.2 license, which greyltc chose for the repository.

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