AithorityX on Instagram: "This little desk‑top “radar” turns beginner Arduino parts into a sci‑fi style object detector. An ultrasonic sensor rides on a servo that sweeps from 0 to 180 degrees, timing sound pulses to map any nearby objects and stream the data to a laptop, where Processing draws that classic green radar fan in real time. Onboard, the Arduino calculates distance, updates the LCD with messages like “Area is Empty,” and could easily trigger buzzers, LEDs, or even motors whenever som