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Kicad pcb ioexpander

fanningert·kicad_pcb_ioexpander·pcb_PCA9685/project.kicad_pcb

Kicad pcb ioexpander layout, top view — open source board by fanningert

About the Kicad pcb ioexpander

Kicad pcb ioexpander is an open source PCB design by fanningert, published on GitHub. It is a 4-layer board measuring 18.3 × 25.9 mm, with 35 components from 4 distinct parts.

Other key parts include the PCA9685PW,118. By type, the board carries 24 connectors, 9 resistors, 1 IC and 1 capacitor.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

PCBto extend IO ports via I²C. Changes are only made on my private Git-Server and are pushed to GitHub. Issues on Github are wellcome.

Core goal is a pcb with the same pin outs, but with different i²C IO Expander. Castellated holes with secondary pin header holes are added, for direct PCB soldering. Secondary pin header holes are placed in a matrix of 2,54 mm (100 mils). Because of the fixed pin layout of the pcb, I created the boards in a four layer design.

Solder pads for I²C address Solder pads for I²C Pull-Up Resistor

Kicad pcb ioexpander, from the project README
From the project README

Main components on the Kicad pcb ioexpander

PCA9685PW,118

Kicad pcb ioexpander bill of materials (BOM)

35 components, 4 distinct parts.

QtyPartRefs
1
PCA9685PW,118
IC1
24
~
J1, J2, J3, J4, J5, J6, J7, J8 +16
1
10uF
C1
9
10k
R1, R2, R3, R4, R5, R6, R7, R8 +1

Kicad pcb ioexpander design files

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

Kicad pcb ioexpander: common questions

How big is the Kicad pcb ioexpander?

The Kicad pcb ioexpander measures 18.3 × 25.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Kicad pcb ioexpander?

35 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the Kicad pcb ioexpander design files?

From the fanningert/kicad_pcb_ioexpander repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Kicad pcb ioexpander design in my own project?

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

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