This smart cart can follow user when shopping, whether indoor or outdoor, and connected to their smartphone to automatically calculate total shopping price and manage the payment. To follow the user, the cart’s system uses ultrasonic sensor. It also equipped with RF-id system which can automatically scan the amount and price of each grocery item in the cart and relay the information to user’s smartphone using IoT system. On the other hand, mobile application system enables the user to get the said information. After shopping, user must make the payment before they can take the items or exit the shopping area, or else the alarm will sound off. The resulted prototype of the smart cart is smaller than normal cart,.
Ultrasonic Sensor
DC motior
3. RGB LED
4.switch
5. RF-id module
6. Microcontroller (Slave)
7. NodeMCU (Master)
8. Servo motor
9. wire
10. Motor and Driver
