Tracking Planes with a Raspberry Pi

I'm tracking airplanes by listening to their ADS-B transponders over the airwaves! I have dump1090 running on a Raspberry Pi, sending the aircraft data over my local network, and an RTL-SDR receiver (silver dongle in the Pi in the second photo) picking up the signal.

I've started some notes on ADS-B transponders as well as on using an RTL-SDR receiver more generally in the new digital garden section of my site. I've started putting project notes from my Obsidian notebook on my site — I like the idea of thinking through things in public.

If you want to track planes yourself, you can also use ADS-B Exchange — it takes in data from a bunch of volunteers doing similar stuff to what I'm doing here.