Note

First Design

First, I have searched for many references about the relationship between embedded system and VR/AR, and I tried to use both VR and AR to make a virtual card. But it's hard for a VR goggle to be linked with Raspberry Pi and PC. Therefore, I choose AR finally.

RC522 RFID Reader part

It's lucky for me to download a great sample of RFID reader file called "SimpleMFRC522.py" on Raspberry Pi. With the help of it , I just need to edit the configuration file, read function and write function to achieve the goal of my project. And set the pin on both Raspberry Pi and RC522 RFID reader.

Camera Module

The only problem of camera module is that it's impossible for you to know how photo likes when you take it. And the camera

module is not as delicated as we use on the phone or camera. So I create a sleep time with 6 seconds to adjust distance and

height and create a preview button to get the best one.

Database

I failed to link with database of PC on the raspberry pi, but I can use the IP address to access the database on the PC. So I tried to create database on the raspberry pi and use the PC database to access it. But I still failed to do this. After I search for the solutions on the google I find it's because the permission of the database was denied and the IP address in the configuration file was not a real one but just a virtual one of Linux system.

So I can successfully link to database on the PC after doing follow steps:

Input "mysql - u root -p" to get access into the database
Input "grant all privileges on *.* to 'username'@'ip adress' identified by 'password'; " to assign a new user
Input "flush privileges;" to refresh the database
Find "/etc/mysql/my.cnf" on the Raspberry Pi of old version or /etc/mysql/mariadb.conf.d/50-server.cnf" on the Raspberry Pi of new version and open the file
Change 'bind-address = 127.0.0.1' to '0.0.0.0' in the file
Restart the database
Get access to database with the IP address and password of Raspberry Pi on the PC

Website

Firstly I tried to write "Web.py" to create a website on the Raspberry Pi but it failed. Thanks for the help of Kyle, I realize that I can use Flask or Django to do the same thing, and it worked finally.
Also, thanks for the help of Shankar, I know the way to use HTML to add favicon on the Flask Website
With the use of Flask, I can use button to run the python file on the Raspberry Pi and edit information on the database.
Web Problem:

The first problem of Flask website is the url for the photo on the Raspberry Pi, therefore, even though I take different photos, the photo on the website will never be changed.

solution: I add a random number on each photo, change name of last one to "id.jpg" and delete the rest once creating new information.

The same problem occurs on the Information Page, and I also add a random number after the customer id to solve it.

The biggest problem of website is how to fill the information on the Zapwork website.At first, I also tried to auto- fill the information on the edit page of Zapwork, as I can know the inspect of their website. But It's almost impossible for me to get the API of the website so I can not link the database with the Website automatically with PHP file, or fill the information with file on the PC , or fill the website with another website. Therefore, now I can only to create a link to the edit page to create the Zapcode manually.

Challenge

Although it's hard for me to full-fill the Website with the database now, I can try to find other open sources of AR creation website.
Now I only can refresh the whole website each time I submit the methods of Flask. But with the use of Ajax I can do the part refresh, which can be more humanity to be use.
Now I only can clean the website once I delete the customer. But I still can find a way to make the website as a blank page.
Since AR is popular nowadays, I can link other kind of AR website with Raspberry Pi to make other interesting application.

Summary

Before the class I know less or even nothing about Google Sites, Python, Rasberry Pi, Zapwork, Flask and HTML. Now I know

many new knowledge about them. It's interesting for me not only to try to link the embedded system with AR, both of which are

amazing, but also to the experience to solve the unexpected problems and use new skills as many as possible. I am looking

forward to solve the current problems and make more interesting things in the future.