The LiDAR Micro Drone is an advanced and compact unmanned aerial vehicle (UAV) designed for intelligent navigation, obstacle detection, and environmental monitoring. It employs LiDAR (Light Detection and Ranging) technology to measure distances by transmitting laser pulses and calculating the Time of Flight (ToF) of reflected signals, enabling real-time distance mapping and efficient obstacle detection during flight. The ESP32-S3 microcontroller provides high-speed dual-core processing, low power consumption, and built-in Wi-Fi and Bluetooth 5 communication, making the system highly efficient and reliable. Additional sensors, including the MPU6050 gyroscope and accelerometer for flight stabilization and the BMP388 barometric pressure sensor for altitude control, are fused with RTOS-based firmware for simultaneous sensor processing and motor control. The drone supports autonomous navigation, automatic collision avoidance, and real-time wireless monitoring via ESP-NOW. Experimental results confirm successful obstacle detection across a sensing range of 0.2 m to 8 m, stable indoor flight performance, and effective wireless data transmission. The proposed system delivers a compact, low-cost, and intelligent solution for safe UAV navigation and proximity sensing in indoor and complex environments.

Mr.K Gangadharan, Ashwin R, Siva Rahul A, Dhanapal P, Velmurugan N, "LiDAR Micro Drone for Proximity Sensing" International Journal of Scientific Research and Engineering Development, V9(5): Page(1427-1431) September - October 2026. ISSN: 2581-7175. www.ijsred.com. Published by Scientific and Academic Research Publishing.