Open-source boards designed in KiCad by sonicavionics on GitHub, from 6 repositories. A board’s address here is its repository’s there.
sonicavionics/4in-power
sonicavionics/4in-challengetemplate
sonicavionics/4in-gps
GPS Module
sonicavionics/4in-quentindelatorre-statusmodule
sonicavionics/4in-recovery
sonicavionics/4in-status