Those Electronic Speed Limit Signs Can See How Fast You're Going Without A Camera: Here's How

Electronic speed limit signs can be a helpful reminder to slow down on the road, but without knowing how they work, the ...

I tested five speed camera detectors for drivers — here's the one I'd buy

I took five of the best speed camera detectors for a long drive. Which one came out on top?

Five years of aerosol remote sensing in Mindelo—a milestone in atmospheric research in the Atlantic

For five years now, a distinctive green laser beam has been shining at night up to 30 kilometers (19 miles) above the harbor ...
Hackaday

optical sensor

There is a point where taking technology for granted hides some of the incredible capabilities of seemingly simple devices. Optical mice are a great example of this principle, using what are more or ...
Hackaday

All The Different Lasers, And How Well They Mark 3D Prints

Stefan] of CNC Kitchen has an informative video describing his experiences with trying to cleanly laser-mark 3D printed ...