Hello, I need a dataflow diagram, sequence diagram, and activity diagram for the following project:

An online website which sells products of a store. There are functionalities to the customer and functionalities to the admin.

Th website shows products which divided into 4 categories (the sections of the store in real): Grocery, Electronics, Home, and Clothes.

Each category has a sectionID and name in table called "sections". In each section (in real store) there are sensors which observes section status as follow:

Admin Side:

1- Arduino sensors send data to the database using an ethernet shield through the local IP

2- Data will be stored in a database table called "Sensors", table includes sensors value (PIR, Humidity, Gas, Ultrasonic) and MinValue for each of them to compare it with sensor value.

3- Admin could see the sensors data from his account.

3- Admin could specify a MinValue for each sensor.

4- Admin could add discounts on any section depending on the SectionID, discounts later will appear to the customer.

5- Admin could control the products of each section (edit, delete, add).

Customer Side:

1- After opening the products page, customer could browse categories, discounts and the best seller products.

2- Customer could add any item to the cart, change quantity, and calculate price of all items.

3- Customer could purchase item/s (after adding them to the cart) by filling the payment form and confirm order.