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Running python scripts
In order for the controllers to work correctly, it is necessary to run a python script suitable for each connection mode.
To make the applications easier to use, two python scripts were developed.
- One for connection mode via USB port and serial communication
- One for connection mode via WiFi connection
Within the Server folder, in this project's repository, these two Scripts will be available, which have their own peculiar characteristics. In order for the scripts to run correctly, some steps must be followed.
git clone https://github.com/LiquidGalaxyLAB/Arduino-Controller
cd Arduino-Controller/Server
Inside this folder, two python scripts and a README file will be available, with the list of dependencies that need to be installed previously for the scripts to work.
Before running the server script, it is necessary to update the pip:
sudo python -m pip install --upgrade pip
And install these dependencies below:
pip install pynput 1.6.8
pip install python-xlib 0.27
pip install pyuserinput 0.1.11
pip install pyserial 3.4
pip install keyboard 0.13.5
Open the terminal and include the user in the "tty" and "dialout" groups, with the commands:
sudo usermod -a -G tty lg
sudo usermod -a -G dialout lg
Now logout and then log in again. To verify that groups have been added, use the command:
groups
The command output must contain the groups to which we include the user. These commands are necessary to enable the use of the serial port for the controller
For the case of making the connection between the controller and the PC Master Liquid Galaxy use the commands below to allow connection via tcp on the firewall on the master pc: Known issues: If you chose to connect with Liquid Galaxy using WiFi and your computer is not showing any results, check your Firewall rules, to perform the Firewall release you can use the following commands: These commands need administrator permission, using the sudo command on all lines this permission will be granted
sudo iptables -F
sudo iptables -A INPUT -i eth0 -j ACCEPT
sudo iptables -A INPUT -i lo -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 8000 -j ACCEPT
sudo iptables -A INPUT -p tcp --syn -j DROP
cd Arduino-Controller/Server
If you chose to communicate with Liquid Galaxy using Serial communication you will need to connect the USB cable to one of the Master computer's inputs and then run the Python Script for Serial communication, use the command:
Python SerialServer.py
If you chose to perform the control using WiFi communication, run the command:
Python Socket.py
After typing one of these commands, minimize the terminal and leave only the world on the screen.