Overview

Wireless distance monitoring is useful in many applications where direct wired connections are difficult or impractical. This project demonstrates a simple and reliable wireless distance monitoring system using an Arduino Uno, a TF-Luna LiDAR sensor, and XBee S2C wireless modules.

The TF-Luna LiDAR sensor continuously measures the distance to an object and sends the measurement data to the Arduino Uno through the I2C communication interface. The Arduino processes the received distance values and transmits them wirelessly using an XBee S2C module. A second XBee module placed at the receiving end collects the transmitted data and forwards it to a computer or another microcontroller for monitoring and logging.

The system eliminates the need for long wired connections between the sensing unit and the monitoring station, making it suitable for remote sensing applications, obstacle detection systems, industrial monitoring, robotics projects, and educational demonstrations.

Features

• Real-time distance measurement using TF-Luna LiDAR
• Wireless data transmission using XBee S2C modules
• Arduino Uno based implementation
• I2C communication with the LiDAR sensor
• Simple and low-cost architecture
• Expandable for IoT and industrial monitoring applications
• Reliable wireless communication without Wi-Fi dependency

Hardware Components

System Architecture

TF-Luna LiDAR

       │

       │ I2C

       ▼

Arduino Uno

       │

       │ Serial Communication

       ▼

XBee S2C Transmitter

       │

       │ Wireless Communication

       ▼

XBee S2C Receiver

       │

       ▼

PC / Arduino Receiver

       │

       ▼

Distance Display & Logging

How It Works

1. The TF-Luna LiDAR sensor continuously measures the distance to nearby objects.
2. The sensor sends distance information to the Arduino Uno using the I2C interface.
3. Arduino reads and processes the incoming sensor data.
4. The measured distance value is converted into a readable format.
5. The XBee S2C transmitter sends the distance data wirelessly.
6. The receiver-side XBee module receives the transmitted information.
7. The received distance values are displayed on a serial monitor or stored for future analysis.

Wiring Connections

TF-Luna LiDAR to Arduino Uno

XBee S2C to Arduino Uno

Software Requirements

• Arduino IDE
• XBee XCTU Software
• TF-Luna Library (if required)
• XBee Configuration Utility

Testing Procedure

1. Configure both XBee modules using XCTU.
2. Upload the Arduino code.
3. Power the transmitter unit.
4. Place an object at different distances from the TF-Luna sensor.
5. Observe distance values on the receiver side.
6. Verify wireless transmission accuracy and response time.

Results

The system successfully measured distances using the TF-Luna LiDAR sensor and transmitted the data wirelessly through XBee S2C modules. Distance readings were received in near real time with stable communication between the transmitter and receiver units.

The project demonstrates that LiDAR-based sensing combined with XBee wireless communication can be used for reliable remote monitoring applications.

Applications

• Remote Distance Monitoring
• Obstacle Detection Systems
• Industrial Automation
• Warehouse Monitoring
• Smart Agriculture
• Robotics Navigation
• Educational STEM Projects
• Security and Surveillance Systems

Future...