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Software Narrative

The Future Cash Register is an innovative point-of-sale solution designed for complete wireless transactions using NFC technology. It facilitates seamless payments and digital receipts, while also assisting cashiers with voice recognition for ordering. Key features include customizable inventory management, user presence detection, and interactive LCD prompts. Developed with a robust microcontroller architecture and Software components, the system ensures secure communication and efficient operation. This cash register aims to enhance customer experiences and streamline restaurant operations.

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Software Narrative

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  1. Software Narrative (Left to Right) Matt Finn Brian Crone Samuel Oshin Yonatan Feleke

  2. Project Overview • Future Cash Register • The future cash register is a point of sale box designed to make transactions completely wireless through the use of the NFC technologies. It will accept payments and send receipts through NFC. It will also aide the cashier with ordering through voice recognition

  3. Project-Specific Success Criteria Ability to customize the inventory via the user interface (Atom) Ability to communicate with an NFC device (dSPIC30) Ability to interface with an IR sensor to detect the presence of a user (dSPIC30) Ability to display prompts to user through LCD (dSPIC30) Ability to aid cashier by highlighting menu choices while placing order with voice recognition (Atom)

  4. Block Diagram

  5. Microcontroller • dsPIC30F5011 • Architecture: 16-bit  • CPU Speed (MIPS): 30  • Memory Type: Flash  • Program Memory (KB): 66  • RAM Bytes: 4,096  • Operating Voltage Range: (V) 2.5 to 5.5  • I/O Pins: 52  • Pin Count: 64  • Internal Oscillator: 7.37 MHz, 512 kHz  • Digital Communication Peripherals: 2-UART, 2-SPI, 1-I2C  • Analog Peripherals 1-A/D 16x12-bit @ 200(ksps)   • Timers 5 x 16-bit 2 x 32-bit 

  6. Software Design Consideration • Split into 3 parts • Atom • Microcontroller • Tester

  7. Atom Application • Devloped in C# • 6 Modules • GUI • Restaurant/Menu class structure • Voice Recognition • Serial communication with micro • Cryptography/Security • Database backup

  8. Modules • GUI • Ordering screen • Checkout/payment screen • Admin screen • Restaurant/Menu Class structure • Top level class: contains inventory, restaurant info, and admin password • Inventory class: contains lists of menu items along with lists of combo items • Menu Item class: contains item name, price, description, keywords, possibly picture • Combo Item class: contains list of menu items included in combo, name, keyword, and price

  9. Modules Cont. • Voice Recognition • Uses System.Speech.Recognition namespace • Serial Communication • Uses SerialPort class from System.IO.Ports namespace • Cryptography/Security • Uses System.Security.Cryptography namespace • Possibly AES • Will encrypt before storing onto hard drive • Database - managed on SQL server

  10. Micro Controller Application • Micro Controller: • Poll infrared • To identify if customer is near • Send a “Go” signal • Through UART to COM port. • Wait for “Pay” signal • Send to LCD • Place NFC close to red circle

  11. Micro Controller Application • Micro Controller • Poll NFC until not empty • Read through SPI • Send a “Pay” Signal • With Credit Card Credentials • Wait for “Receipt” Signal • Store Receipt to Ram • Write to NFC FIFO Manager • Send Through SPI to NFC

  12. Block Diagram Part 1

  13. Block Diagram Part 2

  14. Tester Application • Android SDK • Android App in development • Will be using an NFC Enabled Device to test

  15. Software Narrative

  16. Questions? Be Gentle

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