We built the smallest dual-band aircraft tracker
Pants for Birds is excited to introduce a new product in the ADSBee family of open-source ADS-B receivers: ADSBee 1421! We've been building open source embedded ADS-B receivers for a while, and spent the past 8 months smallifying our existing receiver tech with a new chip from Semtech.

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ADSBee
pantsforbirds.coman open source dual band embedded ADS-B receiver for anything
Horus Binary v2 HAB Tracker
Picked up a compact ESP32 recently and wanted to try using it to solve an annoyance of mine.
A flight tracker made in 6 hours on a flight home from OuterNet
Building a GPS receiver
axleos.comHave you ever noticed that your Maps app still works during a flight? It can feel illicit, like someone just forgot to turn off the signal, and that watching yourself crawl along the earth should be done without drawing undue attention. A few months ago I learned that there were only around 30 GPS satellites serving the entire planet. This piqued my interest, because it reminded me of the 13 root DNS servers from which all resolution flows. Perhaps GPS has a similar design in which the ‘source of truth’ is diluted by several layers of signal repeaters? I navigated to gps.gov, and was presented with this delightful image. I became even more excited to learn about what these satellites do!