This project introduces a novel approach to shopping cart technology by integrating modern electronics and automation. The "Follow Me Check-Out Trolley with Billing" leverages an array of components including an adapter power supply, Arduino microcontroller, RFID technology, LCD display, DC motor, IR sensor, and SR-04 ultrasonic sensor. The core functionality of the system revolves around the PIC microcontroller, which serves as the central processing unit. RFID tags are employed for item identification and inventory management, ensuring seamless checkout processes. An LCD display provides real-time feedback to the user regarding scanned items and billing information, enhancing transparency and convenience. The integration of a DC motor enables autonomous navigation capabilities, allowing the trolley to follow the customer through the store with minimal user input. This functionality is complemented by IR sensors and an SR-04 ultrasonic sensor, which ensure obstacle detection and avoidance, thereby ensuring safe and efficient navigation in crowded store environments. Overall, the "Follow Me Check-Out Trolley with Billing" project aims to revolutionize the shopping experience by combining advanced technology with everyday retail operations.  This abstract highlight the innovative use of electronics to streamline shopping cart functionality, improving customer satisfaction and operational efficiency in retail settings.        

The major building blocks of the project are:  

• Battery power supply.
• PIC Micro controller.
• RFID reader and Tags.
• IR sensor.
• SR-04 Ultrasonic sensor.
• DC motors with l293d motor driver.
• LCD display.
• Crystal oscillator.
• Reset button.
• LED indicators.

  Software’s used:  

• PIC-C compiler for Embedded C programming.
• PIC kit 2 programmer for dumping code into Micro controller.

3. Express SCH for Circuit design.

   

Block diagram:  

 

video: