When you need to quantify the color of an object ... or you can buy an off-the-shelf RGB sensor and wire it up to an Arduino. Or you can go back to basics and build this reflective RGB sensor ...

You can sense a lot of things with the right sensor ... The controlling chip — an Arduino, in this case — can read the intensity of the selected color. The TCS230 uses a 4 x 4 array of ...

Apart from understanding the ... the classic Nano board doesn't offer much. Its iterations, on the other hand, are packed with more modern features like integrated environment sensors, Wi-Fi ...