Development of Embedded System for Automated Vending Machine

Project Title: Development of Embedded System for Automated Vending Machine Project Overview: I am looking for a skilled freelancer to develop a small embedded system for an automated vending machine. The system should be capable of handling money received from coin, QR code, or RFID, activating a motor accordingly, and displaying live stock on a display or webpage. Functional Requirements: Money Handling: The system should accept money through coin, QR code, or RFID. Motor Control: It should activate a motor based on the money received. Display: The system should display live stock either on a display or a webpage. User Settings: 1. Buttons should be included for setting the price of the product (including the option for a free price), 2. selecting the number of motors (1 to 10), 3. setting the number of stock items (1 to 1000), 4. Stock reset button. EEPROM Storage: User settings should be saved in EEPROM. Out of Stock Notification: The system should indicate when products are out of stock. Technical Specifications: Power Input: 12V DC/AC. Microcontroller: ESP or STM microcontroller with GSM connectivity. Communication: Internet connectivity for displaying live stock on a webpage. Deliverables: - Functional Embedded System: Development of the embedded system with all specified functionalities. - Documentation: Wiring diagrams, functional code and its explanations, and user instructions, troubleshooting methods. Additional Information: - The system should be robust and reliable for continuous operation. - Compatibility with standard Indian coin, QR code, and RFID protocols is required. - The freelancer should have prior experience with embedded systems and IoT projects.