Hi-Link HLK-LD6001A 60GHz Trajectory Detection Radar Sensor

The HLK-LD6001A uses a 3.3V TTL UART interface (TX, RX, GND). To connect to a 5V Arduino, use a logic level converter on the TX/RX lines. Power the module with a stable 5V supply via its USB port or designated pins. The sensor outputs structured data packets containing target coordinates and status, which can be parsed with a compatible library or custom serial read code.

Yes, its high sensitivity to micro-motions allows it to detect stationary presence through subtle movements like breathing or slight shifts in posture. This makes it effective for occupancy detection even when people are sitting or standing still, unlike basic PIR sensors which require larger motion.

Configuration is performed by sending specific AT-style command strings over the UART serial connection. You can adjust parameters like the maximum detection distance, sensitivity thresholds, and reporting frequency. Detailed command sets are provided in the official Hi-Link technical documentation.

Millimeter-wave radar can penetrate many non-metallic materials like drywall, plastic, and glass, but signal strength attenuates. Dense objects or metal can block or reflect signals. For optimal trajectory tracking, a clear line-of-sight is recommended, and the detection zone can be configured to ignore static clutter.