digital_thermal_right_lcd

A program that displays temperature on the thermal right cpu cooler's digital screen for Linux.

To build the controller :

Create a python environement:

python3 -m venv .venv

Source the environnement:

source .venv/bin/activate

Install the requirements:

pip install -r requirements.txt

Build as executable :

pyinstaller --onefile src/controller.py

You may also launch it directcly with python

python3 src/controller.py config.json

Set up as a service so it start at each startup:

Create a file in /etc/systemd/system/digital_lcd_controller.service: sudo nano /etc/systemd/system/digital_lcd_controller.service

Write this inside :

[Unit]
Description=Lcd screen controller
After=network.target udev.service systemd-modules-load.service

[Service]
ExecStart=/path/to/the/executable /path/to/the/config.json
User=yourusername
Group=yourusername
Type=simple
Restart=always
RestartSec=5s


[Install]
WantedBy=multi-user.target

Modify the config with the UI :

python3 src/led_display_ui.py config.json

Troubleshooting

If the libhidapi is missing : ImportError: Unable to load any of the following libraries:libhidapi-hidraw.so libhidapi-hidraw.so.0 libhidapi-libusb.so libhidapi-libusb.so.0 libhidapi-iohidmanager.so libhidapi-iohidmanager.so.0 libhidapi.dylib hidapi.dll libhidapi-0.dll Install it with : sudo apt update && sudo apt install libhidapi-hidraw0 libhidapi-libusb0

If the device can't be found : "Error initializing HID device: unable to open device No device found, with VENDOR_ID: 1046, PRODUCT_ID: 32769" Try running the controller as root : sudo python3 src/controller.py config.json The correct way to fix this problem is to create a udev rule by editing this file "/etc/udev/rules.d/99-hid-device.rules" : sudo nano /etc/udev/rules.d/99-hid-device.rules and paste this line : SUBSYSTEM=="usb", ATTRS{idVendor}=="0416", ATTRS{idProduct}=="8001", MODE="0666"