If you have smart lights like Philips Hue, you can turn them off automatically when you leave to save energy. However, if you also have a Nest thermostat, it’s more convenient (and more efficient) to turn off the lights when your thermostat enters «Out» mode.
We’ve covered how to automatically turn off your smart lights when you leave the house. This technique uses a feature called geofencing to determine when you left your home. The only problem is that most smart bulbs only control one phone. If you leave the house, but your spouse, children or roommate are still at home, you can leave them in the dark.
If you have a Nest thermostat, you can get around this in a way that makes a lot more sense. The Nest has an Away mode designed to save you money on air conditioning and heating. But unlike Hue, Nest allows you to add other users to your account and use them to trigger the Outside mode. So when these users share their location with Nest, the thermostat isn’t just waiting for you to leave the house, it’s waiting for you to everyone who connected to the account, go away.
This gives us a handy trigger to turn off your other smart gadgets. After all, if your thermostat turns off, it’s likely that no one needs the light.
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To do this, we will use a service called IFTTT (if this, then this). If you haven’t used IFTTT before, check out our getting started guide for information on how to create an account and connect apps. Then come back here to create the required applet.
This applet will use the Nest Thermostat feed. You also need to enable smart lighting channel. You can use this applet with Philips Hue, LIFX and Belkin WeMo lamps, but we will demonstrate it with Philips Hue. We assume that you already have a nest set up and that all of your family members are already connected to your account. If it doesn’t, follow our guide here.
When you’re ready to get started, go to the IFTTT website and click on your profile picture in the top right corner of the site.
Then click New Applet in the dropdown list.
Click on the word «it» highlighted in blue.