Plant protection drones have revolutionized agriculture by enabling precise, efficient, and safe crop spraying. Among their many capabilities, fixed-point spraying is a critical function for targeting specific areas—such as pest hotspots, diseased patches, or fertilizer-deficient zones—without wasting chemicals or harming healthy crops. This tutorial walks you through the essential steps for executing a successful fixed-point spraying operation.

1. Pre-Flight Preparation
Before any flight, inspect the drone’s propellers, nozzles, tank, and battery. Ensure the spray system is clean and calibrated. Mix the pesticide or fertilizer according to the manufacturer’s instructions, and fill the tank to the recommended capacity. Also, check weather conditions—avoid strong winds (>5 m/s), rain, or extreme heat, as these can affect droplet drift and efficacy.

2. Mapping and Mission Planning
Using the drone’s ground control software (e.g., DJI Agras or UFlyStar’s proprietary app), import or create a high-resolution map of your field. Identify the exact coordinates of the target area. Set the fixed-point spraying parameters: spray width, flow rate, flight speed, and altitude (typically 2–3 meters above the canopy). For irregularly shaped hotspots, use the “polygon” or “point” tool to mark boundaries precisely.

3. Setting Waypoint and Spray Parameters
Input the target GPS waypoints. For each point, define the spray duration and nozzle on/off timing. Most advanced drones allow you to specify a dwell time—how long the drone hovers while spraying at each point. For example, if a pest cluster is dense, increase dwell time to ensure adequate coverage. Conversely, reduce flow for light infestations.

4. Executing the Fixed-Point Spray
Launch the drone and switch to “Fixed-Point Mode.” The drone will autonomously fly to the first waypoint, stabilize, and begin spraying. Monitor the live telemetry on your remote controller or tablet. Watch for obstructions like power lines or trees that could interfere with flight. If the drone deviates from the path, pause the mission and adjust.

5. Post-Operation Checks
After completing all waypoints, land the drone and rinse the tank, nozzles, and hoses with clean water to prevent chemical residue. Review the flight log to confirm spray coverage and volume. Save the mission file for future re-applications or analysis.

6. Safety and Compliance
Always follow local regulations regarding drone spraying. Wear protective gear when handling chemicals, and keep bystanders and animals away from the operation zone. Dispose of leftover spray mixture responsibly.

For a detailed video tutorial and compatible mission-planning tools, visit www.uflystar.com. This platform offers professional guidance, firmware updates, and accessories tailored to plant protection drones, ensuring your fixed-point spraying operations are both efficient and sustainable.

Conclusion
Mastering fixed-point spraying reduces chemical use, saves time, and improves crop health. By following this tutorial and leveraging the resources at www.uflystar.com, you can elevate your precision agriculture practices to a professional level. Always practice on open ground first, and refine your settings based on field feedback. Happy spraying!