7 open source boards using the PCA9685BS
Real designs built with the PCA9685BS, 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.
ESP32Open Shot Clock Display
DLaxV-Community-Projects-Hub
100 × 75 mm196 parts2LCERN-OHL-P-2.05
ESP32PCB-LEDs-Controller
MbFredys
134.4 × 106.7 mm36 parts2LCERN-OHL-W-2.05
ESP32NoU3
AlfredoSystems
46 × 56 mm113 parts4LNo license1
MtN1 Draft 1
Momentum-Devices
40 × 46 mm64 parts4LCERN-OHL-W-2.01
ESP32SmallKat CM4
keionbis
100 × 56 mm152 parts4LNo license0
ESP32NoU3-Panelized
138 × 168 mm113 parts4LNo license1
MtN1 Draft 2
40 × 46 mm50 parts4LCERN-OHL-W-2.01
The PCA9685BS in open source designs
The gallery holds 7 open source boards using the PCA9685BS from 5 GitHub repositories; a typical one measures about 100 × 56 mm and carries around 113 components.
71% use four copper layers or more, and 57% carry an open source license.
The most starred is Open Shot Clock Display by DLaxV-Community-Projects-Hub.
Parts used alongside the PCA9685BS
Microcontrollers on boards using the PCA9685BS
What boards using the PCA9685BS are built for
PCA9685BS: common questions
Where can I find a PCA9685BS reference design?
Each of the 7 boards on this page is a real design using the PCA9685BS. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the PCA9685BS?
The ESP32-S3FN8, ESP32-WROOM-32 and SY8113BADC appear in the most repositories here.
Which microcontrollers do boards using the PCA9685BS use?
Most are built on ESP32 (5).
How big is a typical board using the PCA9685BS?
The median is 100 × 56 mm, and 29% are two-layer designs.
What is the most popular open source board using the PCA9685BS?
By GitHub stars, Open Shot Clock Display by DLaxV-Community-Projects-Hub, with 5 stars.
Can I simulate one of these boards using the PCA9685BS 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.