Project overview Project-specific success criteria Block diagram Component selection rationale Packaging design Schematic and theory of operation PCB layout Software design/development status Project completion timeline Questions / discussion

Future Cash Register • Designed to make credit card transactions

entirely paperless by using NFC

• Voice recognition to facilitate orders

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)

Microcontroller – dsPIC30F5011 • Fast • GPIOs • SPI • ATD • UART • Memory

NFC Controller – NXP PN532 • Large memory • Cheaper • Detailed datasheet • SPI interface.

Touch screen – Planar PX2230MW • Large screen • Great resolution • Money to size ratio • Interfacing • Support.

IR sensor – GP2Y0A02YK0F • Long range

LCD Display – C-51847NFJ-SLW-ADN • 80 character • Easy to interface • Cheap

7” x 5” x 3”

Customer Present (dsPIC30) • IR sensor

• Polling: 250 ms Voice Recognition (Atom)

• Google speech to text API Cashier takes order (Atom)

• C# GUI Finish Order/Pay (Atom)

• Signal to dsPIC30 Prompt User

• dsPIC30 to LCD Received Payment? (dsPIC30)

• NFC through SPI

• Send to Atom Send Receipt (Atom) Send Receipt to NFC (Micro) Status: Not done on all.

19-Mar 26-Mar 2-Apr 9-Apr 16-Apr 23-Apr 2-May

Wire PCB

GUI Application (hello world) (Touchscreen output) (Inventory functions) ("Server" Communication) (Debug)

Microcontroller (Heartbeat on

PCB) (NFC Communication) (Debug)

Perform Transaction (Basic transaction) (Debug)

PRESENT!