’70s Intercom Raspberry Pi Multi-room Audio Mod: Home Reautomation – Technabob (blog)

Technabob (blog) '70s Intercom Raspberry Pi Multi-room Audio Mod: Home Reautomation Technabob (blog) Imgur member cpostier's house has a Nutone 2090, a 1960s to 1970s home intercom system that doubles as a multi-room AM/FM radio. Cpostier wasn't interested in its primary function, but he wanted to update the system's audio capabilities.