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 ...

Today we are going to create a strobe light for the tips of the wings of an rc airplane using a 555 timer (NE 555 or lm 555 IC) this circuit is very easy to make with few components and most ...

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.

Gaming PCs One Redditor has 3D-printed a big yellow air duct to attach to their GPU, and the results are middling: It 'does nothing but it looks cool' Gaming Keyboards As an ergonomic keyboard skeptic ...

The WS2812B has become one of the most popular addressable LEDs out there. They’re easy to drive from just about any microcontroller you can think of. But what if you don’t have a microcontroller at ...

Whether you're looking for a 75-inch, 85-inch, or even 116-inch panel, these are the best big-screen TVs we've tested. I’m PCMag’s home theater and AR/VR expert, and your go-to source of information ...

Open a brokerage account to start buying stocks online. Decide which stocks to purchase and determine share quantity. Invest regularly and diversify to build and grow your portfolio. A stock ...

Kitting out a full workshop can be expensive, but if you’re only working on small things, it can also be overkill. Indeed, if your machining tends towards the miniature, consider building yourself a ...

Abstract: A three dimensional (3D) spatial coding scheme is proposed for simultaneous control of illumination and data transmission in a Visible Light Communication (VLC) system with RGB LEDs arrays .