Sunrise alarm clocks can be a pleasant way to wake up in the morning, but they're expensive. Instructables user Gledow wanted to make one from cheap parts sitting around the house, and did so with a ...
If you ever feel the need to make your own salvaged part trip wire alarm, it turns out it’s a pretty easy process. Over on YouTube, Node walks you through it. All you’ll need is a piezo buzzer, a ...