"The PocketBeagle is a tiny but powerful key-fob-sized open source Linux computer for $25. It has 44 digital I/O pins, 8 analog inputs, and supports multiple serial I/O protocols, making it very useful as a controller."

s/open source Linux computer/computer than can run Linux and other open source kernels/

https://mail-index.netbsd.org/port-arm/2017/10/23/msg004423....