Robotics - ROS in C++. detecting obstacle

Job ID: 31859130

Budget: ₹1,500 – ₹12,500 INR

Need help in interfacing Velodyne Lidar in ROS C++. Need to detect Obstacles that can enter within 5m of distance and trigger something to show the presence of the object. I have attached the diagram for reference. Thank you. Looking for your guidance.