Turn Auto-Brightness off and back on again to recalibrate the sensors. Ryan Ariano/Business Insider This will allow your iPhone to self-calibrate and automatically adjust to ambient light conditions.

The motion sensor also has a few presets depending on which room you tell it to control: for example, if it's controlling hallway lights, it's set to turn them off after a few minutes of no movement.

While PIR sensors can be used with Arduino and other microcontroller boards, those best-suited for hobby use are smart enough to perform simple tasks without any programming.

Over the years, Apple has quietly enhanced Home automations to take advantage of more sensors and let you automatically turn off automations. “Take Control of Apple Home Automation” author Josh ...

It lets you pick out which lights to turn on when a motion sensor detects movement, as well as how long to keep them on for when it detects that everyone has left.

The motion sensor can also turn lights or scenes off after a preset amount of time when movement hasn’t been detected, first dimming them to 50 percent as a heads up that you either need to move ...