[Fjord Carver] brings together an RGB LED and CdS Photoresistor to make a color sensor. Those Cadmium Sulfide lights sensors usually have a very wide swing of resistance when exposed to varying ...

Starting with color detection, [Engineezy] used an RGB color sensor and Euclidian math to determine each marble’s color. After trying several different mechanical sorting mechanisms, he settled ...

Animals, on the other hand, perceive the world through a different lens. Dogs only have two color-sensing cones in their eyes ...

Animals, on the other hand, perceive the world through a different lens. Dogs only have two color-sensing cones in their eyes, giving them "dichromatic vision." The retina uses "cones," a specific ...