About 2 weeks ago, I set out to research grow lights to supplement the scarce natural light we get here at 51°N. But after looking at quite a few offers, I decided to DIY it. My requirements don't ...

One of our favorite finds from this year’s ICFF is Mark McKenna’s collection of pocket-size do-It-yourself designer battery lights. We’ve seen 9-volt batteries acting as light sources before, as in ...

In this project, I'll make a small circuit capable of blinking lights, on its output we get a digital signal that we can use to turn on and off an external light like an LED. This circuit uses the ...