If you wanted to build a robot that chased light, you might start thinking about Raspberry Pis, cameras, and off-the-shelf computer vision systems. However, it needn’t be so complex. [Ed] of ...

Home automation with high usefulness and low annoyance tends to rely on reliable person sensing, and [francescopace]’s ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...

Plant responses to light are multiple. Light is an energy source, converted to sugars by photosynthesis. It is also a signal sensed by specific photoreceptors for red, blue and UV-B radiation. Absence ...

Chris Wedel is a fan of all things tech and gadgets. Living in rural Kansas with his wife and two young boys makes finding ways to stay online tricky — not to mention making my homestead smarter.

Arduino test code is run to see if the sensors are working properly, with built-in LED flashing when the sensor is triggered, ...