🛡️ What This Drone Does
This is the KnowlEdge2 AI guard drone — autonomous AI-powered property patrol. The Jetson Orin Nano Super runs Isaac ROS Visual SLAM for navigation and YOLOv8n TensorRT (8.8MB FP16) for real-time object detection. MAVROS2 bridges ArduPilot to ROS2.
The ZED-F9P RTK GPS provides centimeter-level landing accuracy on the charging pad. The pilot holds RC only as a safety override — the drone arms, takes off, patrols, detects, and lands autonomously.
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All 8 parts from this guide added at once. Review quantities before checkout — motors come in 4-packs; buy 2 packs for 5 total (4 + 1 spare).
Hardware Stack
Matek Systems H743-Slim V3 Flight Controller
Our flight controller. STM32H743, 8 UARTs, 30×30mm. Runs ArduPilot Copter 4.6.2. Enough serial ports for GPS + companion + RC + telemetry simultaneously.
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NVIDIA Jetson Orin Nano Super Developer Kit (8GB)
The brain. 67 TOPS AI inference, JetPack 6.2, CUDA 12.6, TensorRT 10.3. Runs YOLOv8 real-time, ROS2 Humble, Isaac ROS SLAM. The autonomy engine.
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SparkFun GPS-RTK2 Board (ZED-F9P)
RTK GPS with centimeter-level accuracy. UART to FC SERIAL3. ArduPilot GPS_TYPE=17. Essential for precision auto-landing on charging pad.
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DJI O3 Air Unit
1080p/60fps digital FPV, ultra-low latency, on-board storage. Used for operator monitoring. Pairs with DJI Goggles 2.
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iFlight Xing2 2809 1250KV Motors (4-Pack)
Our motors. Cinelifter-grade for heavy payload (Jetson). Buy 5 total — one spare is mandatory on a build this complex. 6S optimized.
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Foxeer Reaper F4 65A 4-in-1 ESC (AM32)
65A continuous on 3-8S, 30×30mm. Configure via esc-configurator.com (not BLHeli Suite 32). No BEC — power GPS/receiver from FC 4V5 pad.
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RadioMaster RP3 ELRS 2.4GHz Receiver
The exact receiver on our build. Diversity nano, UFL antennas, T6/R6 pads. SERIAL7_PROTOCOL=23, RC_PROTOCOLS=512. Confirmed working.
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Tattu R-Line V4.0 6S 1300mAh 130C (2-Pack)
High-C 6S packs for the 7" + Jetson payload. ~8-12 min patrol time per pack. Buy two minimum for meaningful patrol sessions.
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Software Stack (All Open Source)
Confirmed Test Results
- Isaac Sim + Pegasus SITL: Full autonomous mission PASSED — arm → 5m → 5-waypoint box → land (2026-03-19)
- All 4 motors spinning at 30% throttle confirmed (2026-03-20)
- YOLOv8n TRT engine: 8.8MB FP16, real-time on Jetson Orin Nano Super
- Battery voltage: ~22.6V on 6S confirmed via MAVLink
AI payload changes your power budget: The Jetson Orin Nano Super draws ~10W at idle and up to 25W under full YOLOv8 + SLAM inference. At 6S (22V), that's an extra 1.1A of continuous draw your battery sizing estimate must include. On a 1300mAh pack averaging 35A total, AI inference alone cuts flight time by roughly 8–12%. If patrol time matters, disable unused Isaac ROS nodes between detection events to reduce idle draw.
MAVLink 2 is required: The Jetson companion connects via SERIAL1. Set SERIAL1_BAUD=921 (921600) and SERIAL1_PROTOCOL=2 (MAVLink 2). MAVLink 1 drops critical message types needed by MAVROS2. Mismatch here is the most common reason ROS2 topics appear empty on first boot.