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 3.11
• LGWebOSRemote (version 2023-12-11 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 [email protected]
pip install pipx

# Then install LGWebRemote...
pipx install git+https://github.com/klattimer/LGWebOSRemote.git
pipx ensurepath

Removing old versions of LGWebOSRemote

If you had previously installed LGWebOSRemote with pip (rather than pipx), you can remove the old version by running:

rm -fr ~/opt/lgtv

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 --name MyTV --ssl swInfo
lgtv --name MyTV --ssl screenOff

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

Installing the Hammerspoon script

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

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

3. 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.