Quantity   Component name
1 × Any HEOS by Denon component To be controlled over TCP-IP
1 × Running MQTT-broker I'm running this on the same Raspberry Pi 4 as HA
1 × Active Home Assistant setup with MQTT-integration The MQTT-integration will pick up the autoconfig messages for the buttons
1 × Raspberry Pi or other linux setup using systemctl Maybe the script can be changed to work on different systems. This is the setup I use.
1 × Files from the download section
1 × A SSH client and some way to get the files on the Raspberry Pi I use putty and filezilla