BLE Localiser and Control
summary
Three battery‑powered Raspberry Pis broadcast BLE adverts while an iPad scans RSSI and converts it to distance with the path‑loss formula, then trim top and bottom 20% of samples before trilaterating position among three beacons arranged ~2 m apart. A Swift central relays chosen LED patterns over UDP and UNIX domain sockets to a Python process that drives a Unicorn HAT 8x8 RGB grid; live demo changes color, LED count and brightness successfully, using onboard Wi‑Fi for control.
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