1. Final Project Review
Team Digiceipt
April 19, 2016 1 1 1

2. Digiceipt Team Members
George Papageorgiou EE
Tyler Adams
CSE
Enoc Flores EE
Edward Townsend EE

3. What is Digiceipt?
Wireless digital receipt system
Stores receipts in Android app for storage and easy search and view capabilities
Meant to be used by any vendor

4. Improving Receipt Systems
Given a paper receipt after every purchase
Receipt can be very long even if you buy one item
Hassle to keep track of
Waste of paper and ink
Potentially dangerous

5. FPR Goals Reiterated Design and create case for two system
Dimensions (w/Pi): ~ 4.25”x4.75”x1.75”
Dimensions (w/Pwr): ~ 6”x7.5”x2”
Implement GUI
3-5 items on screen
Total cost $
Implement login, delete receipt capabilities, and receipt viewing with proper IRS formatting

6. Block Diagram Eddie/George Enoc/Tyler Preexisting SPI Hard Wired UART
Internet
-Internet access
Display
-Display flow of information
Eddie/George
Enoc/Tyler
Cloud
-Data storage
Preexisting
SPI
Inputs
-Product Data -USB Barcode Scanner
Computer
-USB scanner interface
-Display interface
-NFC interface
-Power interface
Hard Wired
Power Source
-5 Volt output
-2 Amp output
-Battery Powered
UART
Register
NFC Transceiver
-Transmits wireless data
Mobile Phone
-NFC transceiver
-Mobile App

7. System Requirements
Must be able to work for at least 9 hours without recharge
Must only work short range (<6cm)
Data transfer should take no more than 1 second
Must be able to support multiple accounts and have a login
Must be able to send multiple items per receipt
Receipts must be searchable and IRS compliant

8. Power Source
Designed PCB to output 5V and 3A given any input voltage above 5V
Powered by 16 NiMH rechargeable D batteries
Enclosed by 3D printed case with dimensions 5”x8”x3”
Can power NFC terminal for entire work day (at least 9 hours)

9. Power Source Output

10. NFC Terminal Enclosed by case with dimensions 4.3”x5”x1.3
Case has appropriate holes to allow use for Raspberry Pi peripherals
Display monitor is on top while scanning area is entire bottom half
Display monitor has GUI to show items being purchased, their individual prices, and the total price

11. Mobile Phone Implemented login Receipt view Delete receipts
IRS formatting

12. What is Displayed on Receipts
Vendor Name
Vendor Address
Transaction Date
Items purchased
Total amount paid

13. FPR Deliverables Results
Created cases for both systems
Dimensions (w/Pi): 4.3”x5”x1.3”
Dimensions (w/Pwr): 5”x8”x3”
*All dimensions within inch of estimates
GUI is implemented and displays several items with their prices
Login and delete capabilities implemented
Receipt view uses proper IRS formatting

14. FPR Deliverables Results
Python receipt sending program only runs once before needing a reset
Need to reconfigure power supply

15. emo Time!