We've seen a lot of DIY home automation projects over the years, but Instructables user electronichamsters shows off one of the most complete systems we've seen yet. With it, you'll be able to monitor just about everything in your house.
Hot ice, scientifically known as sodium acetate, is a liquid that will turn solid at the slightest provocation. Touching it with your finger or bumping it too hard will cause it to spring from a clear, water-like state into solid ice-like crystals.
Adafruit’s Secret Knock Activated Drawer Lock is designed to conceal traditional lock mechanisms – unlocking only when a secret pattern of knocks is detected. Essentially, a solenoid locks secures the drawer while a piezo buzzer “listens” for knocks.
The proper way to remove USB devices in Windows is to use the Safe Removal option, but it can be a pain. If you have the quick removal policy set for your USB device, you can safely remove it without using Safe Removal.