Smart Trolley Using RFID And Arduino Nano

Video :-

Component List :-

Arduino Nano
Em-18 Rfid Module
16x2 Lcd Display With I2C Module
Buzzer
Red Led
Green Led
Resister  (220 Ohm)
Female To Female Jumper Wire 
Female Header pin

Circuit Diagram:-

Code :-

//Prateek //www.prateeks.in #include <Arduino.h> #include <LiquidCrystal_I2C.h> #include <Wire.h> LiquidCrystal_I2C lcd(0x27, 16, 2); char input[12]; int count = 0; int a; int p1=0,p2=0,p3=0,p4=0; int c1=0,c2=0,c3=0,c4=0; double total = 0; int count_prod = 0; void setup () { // Pin direction pinMode(3, INPUT_PULLUP); //Push Switch pinMode(4, OUTPUT); //RED LED pinMode(5, OUTPUT); //BUZZER pinMode(6, OUTPUT); //GREEN LED // Initialization Serial.begin(9600); // lcd.begin(); lcd.init(); lcd.backlight(); lcd.setCursor(0, 0); lcd.print(" AUTOMATIC BILL"); delay (2000); lcd.setCursor(0, 1); lcd.print(" SHOPPING CART "); delay (2000); lcd.clear(); lcd.setCursor(0, 0); lcd.print(" WELCOME TO "); lcd.setCursor(0, 1); lcd.print("JUSTDOELECTRONIC"); } void loop() { count = 0; while (Serial.available() && count < 12) { input[count] = Serial.read(); delay(5); } int a=digitalRead(3); if ((strncmp(input, "4000350ABAC5", 12) == 0) && (a == 1)) { lcd.setCursor(0, 0); lcd.print("Butter Added "); lcd.setCursor(0, 1); lcd.print("Price(Rm):4.00 "); digitalWrite(4,HIGH); digitalWrite(5,LOW); digitalWrite(6,HIGH); delay(2000); total = total + 4.00; count_prod++; digitalWrite(4,LOW); digitalWrite(5,HIGH); digitalWrite(6,LOW); } else if ((strncmp(input, "4000350ABAC5", 12) == 0) && (a == 0)) { if(p1>0) { lcd.clear(); lcd.setCursor(0, 0); lcd.print("Butter Removed!!! "); digitalWrite(4,HIGH); digitalWrite(5,LOW); digitalWrite(6,HIGH); delay(2000); total = total - 4.00; lcd.clear(); digitalWrite(4,LOW); digitalWrite(5,HIGH); digitalWrite(6,LOW); } else { lcd.clear(); lcd.setCursor(0, 0); lcd.print("Not in cart!!! "); digitalWrite(4,HIGH); digitalWrite(5,LOW); digitalWrite(6,HIGH); delay(2000); digitalWrite(4,LOW); digitalWrite(5,HIGH); digitalWrite(6,LOW); lcd.clear(); } } if ((strncmp(input, "4000351B7B15", 12) == 0) && (a == 1)) { lcd.setCursor(0, 0); lcd.print("Milk Added "); lcd.setCursor(0, 1); lcd.print("Price(Rm):6.00 "); digitalWrite(6,HIGH); delay(2000); total = total + 6.00; count_prod++; digitalWrite(4,LOW); digitalWrite(5,HIGH); digitalWrite(6,LOW); } else if ((strncmp(input, "4000351B7B15", 12) == 0) && (a == 0)) { if(p2>0) { lcd.clear(); lcd.setCursor(0, 0); lcd.print("Butter Removed!!! "); digitalWrite(4,HIGH); digitalWrite(5,LOW); digitalWrite(6,HIGH); delay(2000); lcd.clear(); digitalWrite(4,LOW); digitalWrite(5,HIGH); digitalWrite(6,LOW); } else { lcd.clear(); lcd.setCursor(0, 0); lcd.print("Not in cart!!! "); digitalWrite(4,HIGH); digitalWrite(5,LOW); digitalWrite(6,HIGH); delay(2000); digitalWrite(4,LOW); digitalWrite(5,HIGH); digitalWrite(6,LOW); lcd.clear(); } } if ((strncmp(input, "4000355181A5", 12) == 0) && (a == 1)) { lcd.clear(); lcd.setCursor(0, 0); lcd.print("Total Price :-"); lcd.setCursor(0, 1); lcd.print(total); delay(5000); lcd.clear(); lcd.setCursor(0, 0); lcd.print(" THANKS FOR "); lcd.setCursor(0, 1); lcd.print(" VISITING "); } }

Project Photo

This Project is Done By :-