In this video I build a rotating ESP32-based radar scanner that can detect and track multiple targets in real time. The system uses a 24 GHz HLK radar module mounted on a rotating platform, with position control handled by an ESP32 CYD and wireless communication via ESP-NOW.
The scanner sweeps ±90° using a stepper motor with hall-sensor calibration to maintain accurate angular positioning. Radar data is sent back in real time and visualised on a live radar-style display, with filtering to distinguish real motion from background clutter.
Pick up all the components you need to build this on AliExpress:
TENSTAR ESP32 Development Board with 2.8inch LCD (900+ sold, 4.8*)
https://s.click.aliexpress.com/e/_c3UANeepHiLink HLK-LD2410C 24Ghz Smart Human Presence Radar (2000+ sold, 4.9*)
https://s.click.aliexpress.com/e/_c3f6YFy1Stepper Motor 28BYJ-48-5V 4 Phase Stepper Motor + Driver Board ULN2003 (457 sold, 4.8*)
https://s.click.aliexpress.com/e/_c4kqaVC1