We may receive a commission on purchases made from links. If you have an interest in electronics and have been hanging around DIY tech forums for a while now, chances are you already know what an ...

I was looking for a sensor that could automatically detect falls to monitor the elderly. The first candidate that came to mind was a millimeter-wave radar sensor like the Aqara Presence Sensor FP2. It ...

You can use any sound you want for an iPhone alarm, and here's how to set it up.

Split-flap displays are a great, low-power way to display text to a wide audience. Compared to other display technologies like LCDs they only use energy when the characters change, but have fallen out ...

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