Define the project objectives and requirements, including the type of road markings, robot specifications, and performance criteria . Create a conceptual design of the road marking robot, considering factors like size, mobility, paint dispensing mechanism, and sensor suite. Select the necessary components, including Arduino board, Bluetooth module, motors, sensors (e.g., ultrasonic), wheels, paint dispensing system, and power source (e.g., Li-Po battery). Design the physical structure of the robot, including the chassis, mounting for sensors, wheels, and paint dispensing mechanism. Wire the selected components together, ensuring proper connections, voltage regulation, and power distribution. Develop the software for the Arduino board, implementing control algorithms for navigation, Bluetooth communication, obstacle avoidance, and paint dispensing. Test the robot's individual components and subsystems to ensure they work as expected. 7 M e thod o logy