Sett Home Thermostat – Sett Thermostat
https://sett.homes/
Sett is an open-source, enclosure-compatible version of the 2nd gen Nest thermostat. It reuses the enclosure, encoder ring, display, and mounts of the Nest but replaces the "thinking" part with open-source PCBs that interact with Home Assistant and other local-first home automation setups.
Google is collecting troves of data from downgraded Nest thermostats | The Verge
https://www.theverge.com/news/820600/google-nest-learning-thermostat-downgraded-data-collection
Google officially turned off remote control functionality for early Nest Learning Thermostats last month, but it hasn’t stopped collecting a stream of data from these downgraded devices. After digging into the backend, security researcher Cody Kociemba found that the first- and second-generation Nest Learning Thermostats are still sending Google information about manual temperature changes, whether a person is present in the room, if sunlight is hitting the device, and more.