Microdrone With Proximity Alert Using Lidar

Abstract-The rapid advancement of unmanned aerial vehicles (UAVs) has opened up new possibilities for compact and efficient drones capable of autonomous navigation in complex environments. This paper presents the design and development of a microdrone equipped with a proximity alert system using LiDAR technology. The primary objective is to enhance obstacle detection and collision avoidance capabilities in real-time, enabling safer and smarter drone operation, especially in constrained or cluttered environments.The microdrone is built using a lightweight frame, drone motors, and a flight controller integrated with a NodeMCU microcontroller for control and communication. A LiDAR sensor is employed to continuously measure distances from surrounding objects with high accuracy. The proximity alert system is triggered when obstacles are detected within a predefined range, activating a buzzer and enabling the drone to take evasive action or hover to avoid collision. This system demonstrates the effective use of LiDAR for short-range obstacle detection and its potential in enhancing drone autonomy. Applications include indoor navigation, search and rescue missions, inspection tasks, and delivery in urban environments where precision and safety are critical.