5 open source boards using the XIAO-SAMD21-SMD
Real designs built with the XIAO-SAMD21-SMD, 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.
Microchip SAMFgFocus
GrussmayerLab
44.6 × 44.6 mm7 parts2LNo license1
RP2040/RP2350XIAO
feastorg
203.1 × 125.1 mm21 parts2LCC0-1.01
RP2040/RP2350XIAO
sinismylastname
203.1 × 125.1 mm21 parts2LNo license1
RP2040/RP2350XIAO
AM1NOM
203.1 × 125.1 mm21 parts2LMIT0
RP2040/RP2350XIAO
jadenvv
203.1 × 125.1 mm21 parts2LNo license1
The XIAO-SAMD21-SMD in open source designs
The gallery holds 5 open source boards using the XIAO-SAMD21-SMD from 5 GitHub repositories; a typical one measures about 203.1 × 125.1 mm and carries around 21 components.
100% are two-layer designs, the rest use four layers or more, and 40% carry an open source license.
The most starred is XIAO by feastorg.
Parts used alongside the XIAO-SAMD21-SMD
Microcontrollers on boards using the XIAO-SAMD21-SMD
What boards using the XIAO-SAMD21-SMD are built for
XIAO-SAMD21-SMD: common questions
Where can I find a XIAO-SAMD21-SMD reference design?
Each of the 5 boards on this page is a real design using the XIAO-SAMD21-SMD. 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 XIAO-SAMD21-SMD?
The XIAO-ESP32-C3-DIP, XIAO-ESP32-C3-SMD, XIAO-ESP32-C5-SMD, XIAO-ESP32-C6-DIP and XIAO-ESP32-C6-SMD appear in the most repositories here.
Which microcontrollers do boards using the XIAO-SAMD21-SMD use?
Most are built on RP2040/RP2350 (4) and Microchip SAM (1).
How big is a typical board using the XIAO-SAMD21-SMD?
The median is 203.1 × 125.1 mm, and 100% are two-layer designs.
What is the most popular open source board using the XIAO-SAMD21-SMD?
By GitHub stars, XIAO by feastorg, with 1 stars.
Can I simulate one of these boards using the XIAO-SAMD21-SMD 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.