sudo apt install git python3-pip

Clone this repo

cd /home/pi
git clone https://git.notice.at/redplanet/ir-remote-timer.git
cd ir-remote-timer

install pip modules

pip3 install -r requirements.txt

add systemd service

sudo cp ir-remote-timer.service /lib/systemd/system/ir-remote-timer.service
sudo systemctl daemon-reload

Setting up a random remote

Use irrecord to create a lirc Config file and copy the generated file in /etc/lirc/lircd.conf.d/your-remotes-name.lircd.conf