Motion Sensors in 7 Days to Die can set up some complex systems, from running automated security cameras to controlling turrets for base defense.

Use cases: Once you're using smart sprinklers and hose valves, you can use a soil sensor as a trigger to determine when or whether to water.

In a previous article, we looked at connecting various kinds of Arduino hardware to your Mac. Here's how to get started programming on them to create your own projects.