In this video I'm building an Arduino Heart Rate Monitor that is housed in a toy handle in the style of the Star Trek Tricoder. The device uses the PulseSensor with an Arduino Pro Mini and an OLED ...

Philips Hue's latest Bridge Pro includes handy motion sensing and soothing colors that push it to a solid recommendation, ...

If you happen to be in the market for a small artificial sun, you may be interested to know that for about $1300, you can get a tennis-ball-sized LED array that outputs 120,000 lumens.

There’s a well-known movie trope in which a hacker takes control of the traffic lights in a city, causing general mayhem or ...

There was a time when Linux was much simpler. You’d load a driver, it would find your device at boot up, or it wouldn’t. That ...

Using a single GPIO port on a microcontroller to control N bits of arbitrary parallel binary outputs, e.g., a multi-digital display.

Blue light is a high-energy part of visible light from the sun, screens, and light-emitting diode (LED) bulbs. Your cornea and lens don’t block blue light the way they block ultraviolet (UV) rays.