Back Obstacle Avoidance Radar Sensor (UAV-R121-1) UART

Looking for R121 Sensor? Back Obstacle Avoidance Radar Sensor (UAV-R121-1) UART is available at Zbotic with fast shipping across India.

The UAV-R121-1 (UART) Back Obstacle Avoidance Radar is a compact and lightweight millimeter-wave radar sensor developed and manufactured by MicroBrain Intelligent. It offers high precision, sensitivity, and stability, making it easy to integrate into various systems. Using 79GHz electromagnetic waves, the sensor sends out a fan-shaped signal to detect obstacles ahead by analyzing the returned signals. It then provides real-time data on the relative distance, speed, and angle of obstacles, helping the drone avoid collisions and ensuring safe operation.

Note: For more technical details go through datasheet in the attachment section

Features:

1. Detection Angle: The sensor might have a defined detection angle, specifying the breadth of its coverage area.
2. High Accuracy: Precision is crucial for obstacle avoidance, so the sensor would likely boast high accuracy in detecting obstacles.
3. Fast Response Time: Rapid response time is essential to quickly maneuver the UAV away from detected obstacles, minimizing the risk of collision.
4. Compact Size and Lightweight: To minimize the impact on the UAV’s overall weight and aerodynamics, the sensor would likely be designed to be compact and lightweight.
5. Low Power Consumption: Efficiency is key, so the sensor might be designed to consume minimal power, extending the UAV’s flight time.

Specification

Datasheet     

Dimensional Drawing   

Package Includes:

1 x Back Obstacle Avoidance Radar Sensor (UAV-R121-1) UART

Back Obstacle Avoidance Radar Sensor (UAV-R121-1) UART Overview

The UAV-R121-1 (UART) Back Obstacle Avoidance Radar Sensor is a compact 79 GHz millimeter-wave module designed to detect obstacles behind unmanned aerial vehicles. It provides real-time data on relative distance, speed, and angle, enabling reliable back-end collision avoidance in drones and robotic platforms.

Key Features of Back Obstacle Avoidance Radar Sensor (UAV-R121-1) UART

• 79 GHz millimeter-wave fan-shaped detection for precise obstacle scanning
• Real-time output of distance, speed and angle via UART interface
• High sensitivity and stability for consistent performance in flight
• Compact, lightweight design easy to mount on drone fuselage
• Factory-calibrated sensor requiring minimal setup
• Genuine product with fast shipping across India from Zbotic

Applications and Use Cases

• Rear-end collision avoidance on multirotor and fixed-wing drones
• Obstacle detection for autonomous ground vehicles and AGVs
• Safety enhancement on inspection robots in narrow corridors
• Integration into security patrol drones for perimeter monitoring
• Supplementing vision systems in low-light or dusty environments

How to Use Back Obstacle Avoidance Radar Sensor (UAV-R121-1) UART

Mount the UAV-R121-1 at the rear of your UAV or robot, connect its TX/RX pins to your flight controller’s UART port, and supply the recommended voltage. Configure the baud rate via serial commands, then start streaming distance, speed and angle data directly into your navigation or collision-avoidance firmware.

Why Buy from Zbotic?

• Genuine Products: All items sourced from authorized distributors
• Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
• Free Shipping: Free delivery on qualifying orders
• COD Available: Cash on Delivery, UPI, cards, net banking
• Technical Support: Expert help for setup and troubleshooting
• Easy Returns: Hassle-free replacement for defective products

Frequently Asked Questions

What communication protocol does the UAV-R121-1 use?

The sensor communicates exclusively over a TTL-level UART interface, sending structured data frames that contain distance, speed and angle measurements at configurable baud rates.

How far can the radar detect obstacles?

The 79 GHz millimeter-wave radar can reliably detect solid obstacles at ranges of several meters, with distance resolution on the order of centimeters and real-time updates suitable for high-speed UAV operations.

Do I need to calibrate the sensor before use?

No manual calibration is required. The UAV-R121-1 ships with factory calibration applied. Simply power the module, establish the UART link, and it is ready to provide accurate obstacle data.

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