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.

Instructables user VeryEvilBetty details this project, which requires the LED strips, a light sensor, and an arduino controller. Code is included so you can make your own automatic nightlight ...

If you can install a conventional outdoor light fixture, you can install a motion sensor light, although aiming and adjusting it takes extra effort.

The code grabs a frame of video and divides it into 10 vertical zones, one for each degree of motion for the stepper motor. It creates an array with the values from each of the 10 columns.

Arduino, the building block of many off-hours projects, has put the challenge to you, your kids, or anyone you know who just needs the right kit to fall down a rabbit hole, minus a dangerously hot ...