Published February 16, 2025

Smart Retail System

Automated retail system using RFID and sensors for seamless shopping experiences.

ExpertFull instructions provided69 days94

Things used in this project

Hardware components

M5Stack FIRE IoT Development Kit (PSRAM 2.0)

M5Stack Light Unit with Photo-resistance

M5Stack PIR Sensor Human Body Infrared PIR Motion Sensor (AS312)

SG90 Micro-servo motor

M5Stack Mini RFID Unit RC522 Module Sensor

M5Stack Time-of-Flight (ToF) VL53L0X Laser Ranging Unit (MCP4725/)

M5Stack ENV III Unit with Temperature Humidity Air Pressure Sensor (SHT30+QMP6988)

Story

Overview:

How can we design an automated retail system that ensures secure entry, accurate item detection, and seamless checkout while minimizing errors and fraud

Driving question:

How can we design an automated retail system that ensures secure entry, accurate item detection, and seamless checkout while minimizing errors and fraud

What is this project?:Smart Retail System is a fully automated system designed to offer more convenience and efficiency. Using RFID, motion sensors, and light sensors, it enables secure entrance, real-time detection of items, and checkout without any cashiers. Customers simply tap their payment card to enter, and the system automatically detects item pickups.

How it works?:

A gantry system equipped with TOF sensor and RFID reader ensures safe entry by avoiding accidental scan or unauthorized entry. Inside, light and motion sensors track whether a product is taken away, confirming purchase after 20-30 seconds of delay. This prevents errors and stops false triggers based on changing light levels.

The Smart Retail System improves the customer experience by eliminating long queues and manual scanning. It also scalable in design, the system can be expanded to accommodate more products and users. Through automation and smart technology, it brings retail shopping up to date with speed, smartness, and efficiency.

YouTube Link For Demo:

https://www.youtube.com/watch?v=GdT42ESKgEg

Code

from m5stack import *
from m5ui import *
from uiflow import *
from servo import Servo
import time
import unit

setScreenColor(0x222222)
servo_0 = unit.get(unit.SERVO, unit.PORTC)
tof_0 = unit.get(unit.TOF, unit.PAHUB5)
rfid_0 = unit.get(unit.RFID, unit.PAHUB0)
tof_1 = unit.get(unit.TOF, unit.PAHUB1)
env2_0 = unit.get(unit.ENV2, unit.PAHUB4)






label2 = M5TextBox(15, 100, "Next customer please!", lcd.FONT_DejaVu24, 0xFFFFFF, rotate=0)
label3 = M5TextBox(101, 80, "Welcome", lcd.FONT_DejaVu24, 0xFFFFFF, rotate=0)
label4 = M5TextBox(21, 129, "Please tap credit card", lcd.FONT_DejaVu24, 0xFFFFFF, rotate=0)
label0 = M5TextBox(209, 200, "Temp:", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label1 = M5TextBox(93, 200, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label5 = M5TextBox(19, 200, "Humidity:", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label6 = M5TextBox(262, 200, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label7 = M5TextBox(11, 60, "Thanks for the puchase!", lcd.FONT_DejaVu24, 0xFFFFFF, rotate=0)


label2.hide()
label3.hide()
label4.hide()
label7.hide()
servo0 = Servo(26,50,500,2500,180)
servo_0.write_angle(0)
while True:
  label6.setText(str(env2_0.temperature))
  label1.setText(str(env2_0.humidity))
  if (rfid_0.isCardOn()) == True and (tof_0.distance) <= 80:
    servo_0.write_angle(90)
    rgb.setColorFrom(6 , 10 ,0x33ff33)
    rgb.setColorFrom(1 , 5 ,0xff0000)
    label2.hide()
    label3.show()
    label4.hide()
    label7.hide()
    label3.setText('welcome!')
  elif (rfid_0.isCardOn()) == False and (tof_0.distance) <= 80:
    servo_0.write_angle(0)
    label4.show()
    label2.hide()
    label3.hide()
    label7.hide()
    for count in range(10):
      rgb.setColorAll(0xcc0000)
      rgb.setColorAll(0xffcccc)
      speaker.setVolume(1)
      speaker.sing(220, 1/4)
      speaker.setVolume(0)
      wait_ms(30)
  elif (tof_1.distance) >= 80 and (tof_0.distance) >= 80:
    rgb.setColorAll(0xffff66)
    servo_0.write_angle(0)
    label4.hide()
    label7.hide()
    label2.setText('Next customer please')
    label3.hide()
    label2.show()
  elif (tof_1.distance) <= 80:
    label7.show()
    label4.hide()
    label2.hide()
    label3.hide()
    servo_0.write_angle(90)
    rgb.setColorFrom(6 , 10 ,0xff0000)
    rgb.setColorFrom(1 , 5 ,0x33ff33)
  wait_ms(2)

from m5stack import *
from m5ui import *
from uiflow import *
import time
import unit

setScreenColor(0x222222)
pir_1 = unit.get(unit.PIR, unit.PORTA)
light_2 = unit.get(unit.LIGHT, unit.PORTB)






label1 = M5TextBox(113, 82, "Item removed", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label2 = M5TextBox(103, 102, "[Item Discription]", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label3 = M5TextBox(107, 64, "Item purchased", lcd.FONT_Default, 0xFFFFFF, rotate=0)


label1.setText('item removed')
label3.hide()
while True:
  if (pir_1.state) == 1:
    if (light_2.analogValue) <= 200:
      label1.hide()
      rgb.setColorAll(0x33cc00)
    else:
      label1.show()
      rgb.setColorAll(0xff0000)
      wait(20)
      if (light_2.analogValue) > 200:
        label3.show()
        rgb.setColorAll(0xffff66)
  else:
    rgb.setColorAll(0x33cc00)
    label1.hide()
  wait_ms(2)

Smart Retail System

Things used in this project

Hardware components

Story

Schematics

First M5Stack Blocky Code

Second M5Stack Blocky Code

First M5Stack Circuit Picture

Second M5Stack Circuit Picture

Code

First M5Stack

Second M5STack

Credits

Benedict

Comments

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Smart Retail System

Smart Retail System

Things used in this project

Hardware components

Story

Schematics

First M5Stack Blocky Code

Second M5Stack Blocky Code

First M5Stack Circuit Picture

Second M5Stack Circuit Picture

Code

First M5Stack

Second M5STack

Credits

Benedict

Comments

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