Microbrain Intelligent Intelligent UAV-R121-1 77–81GHz Obstacle Avoidance Radar (1.5–120 m) - UART IP67

The sensor communicates via a standard UART (Serial) interface. It streams processed data packets containing obstacle distance, radial speed, and angle information. You will need to connect the TX/RX pins to a compatible UART port on your flight controller (e.g., Pixhawk), Raspberry Pi, or microcontroller and parse the data according to the provided protocol documentation.

The radar has a configurable detection range from 1.5 meters up to 120 meters. Its field of view is a fan-shaped beam with a horizontal (azimuth) angle of ±15 degrees and a vertical (elevation) angle from -5 to +3 degrees. This provides wide forward coverage suitable for drone navigation and ground-based robotics.

Yes, the UAV-R121-1 is built for outdoor operation. Its IP67 rating ensures it is waterproof and dustproof, protecting the internal electronics from rain, splashing water, and dust ingress. Furthermore, millimeter-wave radar technology is largely unaffected by environmental conditions like fog, light rain, or darkness, unlike optical or ultrasonic sensors.

The module typically operates from a single DC power source, commonly 5V or 12V, with low power consumption to preserve drone flight time. You must consult the official datasheet for the exact voltage input range, current draw, and pinout diagram to ensure proper power supply design and safe integration with your system's power bus.

Yes, the advanced FMCW signal processing allows the UAV-R121-1 to detect and track multiple objects within its field of view. The UART data output can provide information on the closest obstacle, multiple target lists, or tracking data, depending on the firmware configuration and how the host system processes the serial data stream.