Intended use of control system stuff, as evident by their design: "To be installed on a totally isolated network with no communication to anything else." Actual use case: "Connected to the internet or ...

When spending time camping, people often bring lanterns, flashlights, and the like — you might even bring along a solar charger. Instructables user [bennelson] is combining all your electrical powered ...

There are a huge number of ways to track the sun if you have some reason to do so. You can use time-based algorithms, or feed in coordinates from the Internet, or you could do it with minimal parts ...