Keeping track of things like the temperature, humidity, and smoke level in your house is important. ... Instructables user ICStation shows off how to use an Arduino to do it.

If you're using Amazon Echo speakers at home, you'll find a temperature sensor inside the 2nd-gen Echo Plus (launched 2018), the 4th-gen Echo (launched 2020), and the 5th-gen Echo Dot (launched 2022).

Here’s how to set up and use HomePod temperature and humidity sensors plus we’ll look at some ways to bring the same functionality to the Home app without a HomePod.

Make sure your device is up to date. To use the built-in sensor in the HomePod Mini and HomePod 2, you’ll need the latest Apple software, which in this case means iOS or iPadOS 16.3 or later.