I turned my DJI Mavic into a home security drone with REA & Opus 5.5. this f*cking is insane.. I reverse-engineered my DJI drone with Opus 5.5 no cloud. no GPS on the target. it all runs on the phone. iPhone or Android. here's the build step by step: step 1 → plug a spare phone into the Mavic remote and paste the prompt below into Claude Code on Opus 5.5 step 2 → Opus checks your drone against the DJI Mobile SDK v5 list. not on it? stop there. no firmware hacks step 3 → it builds a small app on the official DJI SDK: Swift for iPhone, Kotlin for Android step 4 → sync with the alarm: Home Assistant sees it trigger → push to your phone → one tap "Launch" step 5 → eyes: a tiny YOLO model on the phone's chip. Core ML on iPhone, LiteRT on Android step 6 → memory: a Kalman filter. he runs behind a fence → LOCKED → COASTING → re-locks on the same ID step 7 → hands: Virtual Stick at 10 Hz. box center → yaw, box size → distance, never closer than 8 m step 8 → at the property line it stops, climbs to 30 m and keeps the camera on him until he's out of sight step 9 → lands back on the pad. the clip with track, distance and timestamps is already on your phone the alarm wakes you up. the drone already knows where he went... Find full prompt below Then, read the article below on how to reverse-engineer anything with Opus 5.5.