4 open source boards using the PCA9555D
Real designs built with the PCA9555D, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
RP2040/RP2350Riptide
SharKingStudios
330 × 123 mm250 parts2LMIT18
ESP32Load Demand Response System
jsitech4
198.1 × 130.8 mm133 parts4LNo license0
ESP32Smart Home Energy Management System
198.1 × 130.8 mm133 parts4LNo license0
ESP32Smart Hybrid IOT energy management System
198.1 × 130.8 mm133 parts4LNo license0
The PCA9555D in open source designs
The gallery holds 4 open source boards using the PCA9555D from 2 GitHub repositories; a typical one measures about 198.1 × 130.8 mm and carries around 133 components.
75% use four copper layers or more, and 25% carry an open source license.
The most starred is Riptide by SharKingStudios.
Microcontrollers on boards using the PCA9555D
What boards using the PCA9555D are built for
PCA9555D: common questions
Where can I find a PCA9555D reference design?
Each of the 4 boards on this page is a real design using the PCA9555D. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the PCA9555D use?
Most are built on ESP32 (3) and RP2040/RP2350 (1).
How big is a typical board using the PCA9555D?
The median is 198.1 × 130.8 mm, and 25% are two-layer designs.
What is the most popular open source board using the PCA9555D?
By GitHub stars, Riptide by SharKingStudios, with 18 stars.
Can I simulate one of these boards using the PCA9555D before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.