LG TV Control for macOS

Automatically wake/sleep and change the input of your LG TV when used as a monitor on macOS.

This script uses Hammerspoon to detect system events such as power off, sleep, and wake.

Requirements

Hammerspoon
Python 3
LGWebOSRemote (version 2023-01-27 or newer)

Installing Requirements

This assumes that you already have Homebrew installed. If you don't, get it first.

Installing Hammerspoon

brew install --cask hammerspoon

Installing Python & LGWebOSRemote

# You can skip this if you already have Python installed and know what you're doing.
brew install python

# Then install LGWebRemote (version 2023-01-27 or newer)...
mkdir -p ~/opt
python -m venv ~/opt/lgtv
cd ~/opt/lgtv
source bin/activate
pip install git+https://github.com/klattimer/LGWebOSRemote

Configuring LGWebOSRemote

By now, you should be able to run

lgtv scan ssl

and see some info about your TV. Grab your TV's IP address from the output. Then:

lgtv auth <ip_address_here> MyTV ssl

and follow the instructions on your TV.

Now, try the following:

lgtv MyTV swInfo ssl
lgtv MyTV screenOff ssl

If everything is working as expected, your screen should turn off.

Installing the Hammerspoon script

Copy lgtv_init.luafrom this repo to ~/.hammerspoon
Run the following

mkdir -p ~/.hammerspoon
touch ~/.hammerspoon/init.lua
echo "require \"lgtv_init\"" >> ~/.hammerspoon/init.lua

Change the HDMI input at the top of the Lua script, if needed.

Special Thanks

Thanks to @greyshi for extending upon my initial Wake On LAN gist and introducing LGWebOSRemote.

fakeskimo/lg-tv-control-macos