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This project presents the design and implementation of an Assistance Social Robot for Safe Road Crossing, leveraging a combination of Raspberry Pi and PIC microcontroller technologies. The system integrates signal lights and various sensors to facilitate safe pedestrian crossing at road intersections. The robot employs a Raspberry Pi Zero 2 W, equipped with a Pi camera and two ultrasonic sensors, to monitor traffic conditions and detect nearby vehicles. The PIC microcontroller manages signal lights to guide pedestrians effectively.   Upon detecting an approaching vehicle, the ultrasonic sensors trigger the signal lights, alerting pedestrians to wait for a safe crossing opportunity. The system also includes a DC motor driver and motors for mobility, enabling the robot to navigate and position itself at crossing points. This innovative approach aims to enhance pedestrian safety by providing real-time assistance, thereby reducing accidents and improving traffic management. The project showcases a practical application of robotics and smart technology in urban environments, emphasizing the importance of safety in public spaces.   The objectives of the project include:

1. Design a road crossing robot.
2. Obstacle/object presence detection using Ultrasonic sensor.

    The major building blocks of this project are:  

1. Battery Power Supply.
2. PIC Micro Controller.
3. DC Motor with l293d motor driver.
4. Two Ultrasonic sensor.
5. Pi camera.
6. Pi zero 2w.
7. Signal lights.
8. Reset Button.
9. Crystal oscillator.
10. LED indicators.

      Software’s used:    

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.
4. Raspbian OS.

    Block Diagram:              

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