I turned my HomePod into a Spotify Connect device with Raspberry Pi
Turning HomePod into a Spotify Connect device makes it available to all mobiles and computers on a local network.
I love streaming Spotify music, but my phone's and laptop's built-in speakers aren't the best. Typically, I use HomePod to stream music from my iPhone and iPad despite knowing it lacks native Spotify integration and works only with AirPlay-supporting Apple devices. Also, the fact that HomePod is absent from the Spotify Connect-enabled products list hurts; it doesn't work directly with Android phones and Windows or Linux-based computers.