4 open source boards using the APX803
Real designs built with the APX803, 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.
Adafruit 0.96in 160x80 TFT Display
ihmnelson
31.8 × 27.8 mm25 parts2LNo license0
Microchip SAMAdafruit Circuit Playground Express
hulkco
50.8 × 50.6 mm78 partsNo license15
Microchip SAMAdafruit PyPortal
88.3 × 64.5 mm75 partsNo license15
Adafruit OLED 128x32 Mono I2C STEMMA QT rev B
jackshisd
33 × 21.6 mm24 parts2LNo license2
The APX803 in open source designs
The gallery holds 4 open source boards using the APX803 from 3 GitHub repositories; a typical one measures about 41.9 × 39.2 mm and carries around 50 components.
100% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is Adafruit Circuit Playground Express by hulkco.
Microcontrollers on boards using the APX803
What boards using the APX803 are built for
APX803: common questions
Where can I find a APX803 reference design?
Each of the 4 boards on this page is a real design using the APX803. 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 APX803 use?
Most are built on Microchip SAM (2).
How big is a typical board using the APX803?
The median is 41.9 × 39.2 mm, and 100% are two-layer designs.
What is the most popular open source board using the APX803?
By GitHub stars, Adafruit Circuit Playground Express by hulkco, with 15 stars.
Can I simulate one of these boards using the APX803 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.