The document describes a proposed "Supermarket Smart Cabinet" project. The project aims to address issues with staff availability, checkout speed, and customer wait times at supermarkets. The key idea is integrating RFID sensor smart cards that customers can tap on shelf labels as they shop to automatically track their purchases. This would allow fewer cashiers and faster checkout. The proposed system uses an Arduino Uno, load cell, RFID reader and other components. It involves coding for the RFID sensor authentication and load cell monitoring integrated into a continuous loop. A Visual Basic program is also involved for back-end billing processing based on load cell weight data analysis.

1. MAJOR PROJECT
SUPER MARKET SMART CABINET
SUBMITTED TO: AATMA RAM SIR
SUBMITTED BY: PRAYAG RAJ
(17001007044)

2. WHAT IS A SUPERMARKET
? A supermarket is a large retailing
shop where goods are displayed in such a way
that buyers select products for themselves.
Buyers collect their product off the shelves

3. INSPERATION FOR SMART CABINET
This project addresses the problems of staff
availability issues followed by checkout speed. By
the help of smart card laced with RFID sensor
billing is independent and instantaneous. The
obvious benefit is that they’ll need fewer cashiers to
ring up sales, but there are also a couple of benefits
for shoppers.

4. DRAWBACKS TO BE ADDRESSED ARE
? Rush inside is deterrent to new customers
? Mismanagement of goods and services
? Lack of floor assistance in peak hours
? Long wait on counter and check out
NOW
SOON

5. COMPONENTS USED IN THE PROJECT
? ARDUINO UNO
? LOAD CELL
? Hx711 Load Cell Amplifier Module
? LCD Display (16*2)
? RFID Reader
? USB cable
? bread board
? 12 V Relay
? LM 7805
? Diode 1N4007
? Connecting wires
? Protius professional software

6. ARDUINO UNO
? Specifications:
? Operating voltage-5V
? Input voltage- 7V to
20V
? Flash memory- 32KB
? EPROM-1KB
? Clock speed:16MHz
? UART:1

7. LOAD CELL
? Specifications:
? Rated load: 40 Kg
? Output: 2.0mV
? Single Point Load Cell
? Precision: C3 Class
? Material: Aluminum Alloy
? Excitation voltage: 5-10V

8. HX711 LOAD CELL AMPLIFIER MODULE
? Operation Voltage: 2.7V-5V
? Operation Current: < 1.5mA
? Sample rate: 10Hz
? Simultaneous 50 and 60Hz
supply rejection

9. RFID READER
? Operating Current :13-26mA / DC 3.3V
? Idle Current :10-13mA / DC 3.3V
? Sleep Current: < 80uA
? Peak Current: < 30mA
? Operating Frequency: 13.56MHz

10. We have come up with an idea of smart, self-
assessing and interactive cabinets which are
integrated with an RFID sensor smart card which
not only act as the key card but wallet also. After a
consumer has registered via an app, they are then
able to shop as usual, but tap a physical card to the
shelf labels as they pick up the items they wish to
purchase.

11. CIRCUIT DIAGRAM FOR FRID SENSOR

12. CIRCUIT DIAGRAM FOR LOAD CELL
AND HX711 MODULE

13. ARDUINO CODING (200+ LINES) SEQUENCE
# Initializing RFID sensor
{
Reading the ID key card
{
Checking the ID key card authentication from
Registered ID
{
If (pass condition);
Initialize load cell sensor program encoded inside a loop of blinkwithoutdisplay
code
(So that it runs continuously and is independent of the delay constraint)
{
Initialize load cell Hx711 module
Calibrate the load cell
}
}
else (fail condition);
}
}

14. VISUAL BASICS BACK HAND PROCESS
The simulation is a core C++ based program that
depicts the billing system integrated to the arduino
project. Its purpose is to acquire data and generate
bill projected from the data analysis of weight
difference in the reading of load cell.