Tinypilot is a distribution of linux specifically for pypilot.
Currently only raspberry pi (all types) are supported, but primarily the raspberry pi zero W is targeted.
It is accessible over wifi via tinypilot ssh
The nokia5110 daylight visible display is connected, and buttons or IR remote can be used to configure the autopilot through this interface.
A second tinypilot can act as a control interface over wifi.
Tinypilot is built on http://tinycorelinux.net/