YourPad, connected TPE

RiverTrue Jul 14.2022

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This is the wiki for our project "Projet produit"

Things used in this project

Hardware components

HARDWARE LIST

1 DFRobot 5.5" screen

Link

1 Raspberry Pi 3 Model B+

1 RFID-RC522 Joy-it

Software apps and online services

Raspberry Pi Raspbian

Story

Projet Produit

Our project "Projet Produit" is a project in order to complete our second year at L'Ecole LDLC where we have to create a product from scratch.

We took a lot of time to think about an innovative project following our theme and constraint. We had to use an Arduino or a Raspberry, use Wifi, use at least one screen and a python script. Our theme was the bars in general.

First of all, we wanted to make a table that would be interactive for bars. We thought about being able to order from the table, interact with other tables and play alcohol games.

We (sadly) realised that it would be too complicated to make in the time and budget we had so we had to think about a new idea.

In order to find this new idea, we went to bars and asked waiters and bosses of bars about what was a problem in their bar. We ended up thinking about making a payment terminal that would include the pad to take orders from customers.

An all in one order/payment pad.

First step was to make the raspberry work, so we decided to install raspbian on it to install our simulation software. Here is a link to a tutorial to install Raspbian on your Raspberry : Link

I am talking here about a "simulation" software because in this project we are not making a real order/payement software. When we created our project we decided not to aim to sell our product to bars but to aim for cash register software companies and sell it to them so they can adapt the software and sell them to whoever they want.

The software

In order to complete our project we have to make a simulation software so i'm going to detail how it was made.

We hopped on Adobe XD and designed a simple interface that is the following.

Adobe XD preview

We then proceed to create it in HTML, here is the repo with all the code.

Note that this is not meant to be a real ordering software and this is why it it not very complete.

The payment part is available in the repo in the Python folder. Note that the two softwares are not connected together yet.

The prototype

1. Software part

Thanks to the screen we choose, the screen becomes touche sensitive just by plugging it into the raspberry so we don't need extra code for this.

After installing raspbian on the raspberry, we then open the terminal and update everything in the apt :

CODE

sudo apt-get update

We then cd in the directory you want to clone the project :

CODE

cd /pi/Desktop

And finally we clone the repository :

CODE

git clone https://github.com/Thomz07/ProjetProduit

And now you just have to open the file "index.php"

About the paiement part, we started to develop a software that can read NFC card and we are working to get the certifications we need to make it a real paiement sofware.

We started to make our version 1 of the user interface with Python Tkinter.

To activate the nfc reader, simply run the following command on the Raspberry terminal :

CODE

sudo raspi-config

Then choose Interfacing Options, SPI, confirm by pressing Y and that's it.

Last but not least, we will install the Python3 library "pi-rc522" which allows to control the RC522 reader.

We will use Pip3, a library manager for Python. We will just run the following command :

CODE

sudo pip3 install pi-rc522

Here is the sofware architecture :

Software architecture

2. The hardware

The hardware part is pretty easy, you just have to plug the HDMI to the screen to make it work, Note that you might want to change the screen resolution in Raspbian settings.

To make the screen touch sensitive you have to plug a USB to microUSB cable from the Raspberry to the screen.

For the wiring of the RFID module, here is a diagram that explains it :

Wiring diagram