Aviation telemetry node, attic-mounted, PoE-powered.
A self-contained ADS-B receiver running dump1090-fa on a Raspberry Pi 4 with an RTL-SDR Blog v3 and a 1090 MHz filtered antenna. Feeds into a local Postgres node and cross-references against my own logged flights — closes the loop between what I fly and what's in the air around me. Anonymized aggregates push upstream to ADS-B Exchange.