Theory of Operation and Hardware Design

Group 14:

Brian CroneMatt FinnSamuel OshinYonatan Feleke

Review Future Register

• Utilizes customer input to facilitate purchasing transactions in an fast-food style restaurant

• Can communicate with a customer’s NFC-enabled cell phone to digitally transmit credit card information and receipts

• Vendor will be able to customize the inventory through the user interface

PSSC Ability to customize the inventory via the user interface

(Atom)

Ability to recognize the NFC device, transmit customer’s credentials into hard drive, and also encrypt (µC)

Ability to interface with a pressure sensor to detect the presence of a user (µC)

Ability to display prompts to user through LCD (µC)

Ability to aid cashier by highlighting menu choices while placing order with voice recognition (Atom)

Subsystems Microcontroller

• NFC Controller• Pressure Sensor• Small LCD Screen

Atom Board• LCD touch monitor• Microphone• WiFi

Microcontroller dsPIC30F5011

• 2.5V – 5.5V• SPI• 12-bit ATD• GPIO

NFC Controller PN532

• 13.56 MHz• 2.7V – 5.5V• 424 Kbits/s• NFCIP-1 Protocol• SPI up to 5 MHz

Pressure Sensor and LCD Pressure Sensor: MPVZ5004GW7U

• Produce up to 5V• Connect to analog pin on µC to produce 12-

bit digital signal LCD: C-51847NFJ-SLW-AND

• Supply Voltage: 4.5V – 5.5V• GPIO Pins

Atom Board Intel Atom Processor D510

• 12V DC Input• 2GB RAM• 40 GB SATA Hard Drive• Connect to µC via COM port• Utilize USB, VGA, and Microphone ports

Atom Board Peripherals LCD Touch Monitor

• VGA for graphics• USB for touch input• Separate power supply

Microphone• 3.5mm connector

WiFi• USB WiFi transceiver

Preliminary Schematic

Questions?