Discover a collection of creative DIY hacks and projects in this hands-on tutorial. Watch as matchsticks are transformed into a spinning toy, complete with handmade paper propellers. Dive into fun ...

Compatible with iPhone and Samsung phones, the new optical lens system from Reeflex is designed to push smartphone photography into territory traditionally reserved for dedicated camera gear. Launched ...

This PWM (pulse width modulation) signal isolation module is built around the widely adopted 6N137 high-speed optocoupler. The device combines a high-efficiency input LED with an integrated optical ...

I want to write about something a little different this time. I removed the mechanical scroll wheel rotary encoder from a discarded optical mouse and used it in a little project. I really liked the ...

Few realize how close an optical coupler resembles a relay. It is so close, in fact, that one can be wired as a Run-Stop latch circuit. One advantage over the relay is that it may be turned off via a ...

A simple and cost-effective laboratory experiment is described that extracts protoporphyrin IX from brown eggshells. The porphyrin is characterized by UV−vis and fluorescence spectroscopy. A ...