SwitchBot’s 3-in-1 Vacuum Handles Pet Hair, Tight Spaces, and Daily Messes—Without Taking Over a Closet

The 3-in-1 concept seemed gimmicky at first, but this combo vac system earned a permanent spot in my home.
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[Arduino] Checking if the room light is on from the outside. Building a "Door-Through Lighting Indicator" that runs with auto-calibration and ultra-low power consumption

Have you ever been in a situation, whether in a conference room, a private office, or a room in your own home, where you can't tell if someone is inside (or if the light is on) from the outside ...