curl -sSL https://raw.githubusercontent.com/hardenedpenguin/asl-misc-scripts/refs/heads/main/setup-asl3-gps.rb | sudo ruby
Interactive setup for gpsd, shared GPS on 127.0.0.1:2947, and APRS via app_gps on an ASL3 node. gpsd owns the USB receiver (for saytime, SkywarnPlus, cgps, and similar clients). A gpsd-nmea-bridge systemd unit replays NMEA to /dev/rptgps because app_gps only reads a serial-style stream.
The script installs gpsd, gpsd-clients, and socat; writes /etc/default/gpsd and /etc/asterisk/gps.conf (APRS passcode from callsign); enables app_gps.so in modules.conf; and restarts gpsd and Asterisk. Defaults target Shari PiHat-class low-power Pi nodes (~5W HT, rubber duck, omni): 180s beacon interval, car icon (>), and PHG power/height/gain of 2/1/1. Run as root and answer prompts for callsign, SSID, USB device (/dev/ttyACM0 default), RF frequency, tone, beacon comment, and interval.