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I built a portable 1090 MHz ADS-B receiver and Meshtastic mesh radio on a LilyGo T-Display-P4 (~$100). An RTL-SDR dongle plugged into the USB Host port receives aircraft transponder signals, decoded in real-time on the ESP32-P4's dual RISC-V cores. The onboard SX1262 LoRa radio runs Meshtastic-compatible mesh networking simultaneously.

Live demo / companion app: https://adsb-scope.offx1.com (WebSerial — Chrome/Edge, connect via USB)

Questions? Feedback? hello@offx1.com

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Show HN: ADS-B Scope – Portable ADS-B and mesh radio on a LilyGo T-Display-P4