An old laptop can be repurposed as a Home Assistant hub, allowing users to manage smart-home devices from different manufacturers without buying a Raspberry Pi or mini PC. This matters because Home Assistant can reduce reliance on separate companion apps and, for some integrations, cloud services, while giving users more local control over their devices.

Home Assistant supports brands including Philips Hue, Google Nest, Ring, Sonos and Ecobee, as well as automations, scenes and scripts. The laptop must remain powered on continuously, and an Ethernet connection is preferable for reliability, although Wi-Fi is possible; modest hardware and storage are sufficient, but users should consider battery safety, power cuts and the platform’s learning curve.