This xCHIP forms part of the core modules. The SAM D21 is a series of low-power micro controllers using the 32-bit ARM® Cortex® -M0+ processor, with 256 KB Flash and 32KB of SRAM. Compatible with Arduino platform due to the shared architecture with the Arduino M0.
This is the latest unstable release of CircuitPython that will work with the XinaBox CS11.
Unstable builds have the latest features but are more likely to have critical bugs.
Every time we commit new code to CircuitPython we automatically build binaries for it. They are stored on Amazon S3 by language (some which may be unreleased.) Try them if you want the absolute latest and are feeling risky.
All previous releases are available on GitHub. They are handy for testing but we recommend the latest stable otherwise.