luthes / litra-driver

Linux CLI and UI for operating Logitech Litra Glow

Python Utility for Logitech Litra Glow and Beam

Introduction

After purchasing a Logitech Litra Glow I was unable to find any support for linux. This project reverse-engineers the basic functionality of the litra glow so that we can control it via USB without using the physical buttons on the device. It also now supports the Logitech Litra Beam.

Quick Start

Linux

# If necessary, create a udev role to grant permission to access the light
sudo tee /etc/udev/rules.d/82-litra-glow.rules <<< 'SUBSYSTEM=="usb", ATTR{idVendor}=="046d", ATTR{idProduct}=="c900",MODE="0666"'
sudo tee /etc/udev/rules.d/82-litra-beam.rules <<< 'SUBSYSTEM=="usb", ATTR{idVendor}=="046d", ATTR{idProduct}=="c901",MODE="0666"'

# For most operating systems, reloading udev rules is enough
sudo udevadm control --reload-rules
sudo udevadm trigger

# For others, a reboot may be required
# sudo reboot

# Uninstall if previously installed
pip uninstall litra-driver
pip install litra-driver

# Command Line Interface
lc --help

# User Interface
lcui

Fedora Dependencies

The following dependencies may need to be installed for the UI. This was specifically noted on Fedora 37:

sudo dnf install -y python3-tkinter libappindicator-gtk3

Ubuntu Dependencies

The following dependencies may need to be installed for the UI. This was specifically noted on ubuntu 20.04:

sudo apt-get install -y python3-tk gir1.2-appindicator3-0.1

The UI

A basic UI can be launched to allow control of the light:

lcui

The CLI

NAME
    lc

SYNOPSIS
    lc COMMAND

COMMANDS
    COMMAND is one of the following:

     on
       Turns on the Litra Glow

     off
       Turns off the Litra Glow

     temp
       Sets the temperature level of the Litra Glow

     bright
       Sets the brightness level of the Litra Glow

Sample Usage

lc on
lc bright 10
lc temp 6500
lc off

# Chain multiple commands
lc on bright 100 temp 2700

The log level can be adjusted by setting the environment variable LITRA_LOGLEVEL to one of the following:

• CRITICAL
• ERROR
• WARNING
• INFO
• DEBUG

Development

Creating / installing the distribution

pip install build

# Create distribution
python -m build

# Local Testing
pip install --editable .

# Linter
tox -e lint

# Unit Test - "Coming Soon"™
tox -e test

# Push to pypi 
pip install twine
twine check dist/*
twine upload dist/*