Smart AVR based color sensor

If you ever used image editing software, you probably tried color picker tool. It allows pointing to any place (pixel) of image or digital photo and it returns its RGB value. This is handy way of determining digital color value. Well this is easy when you have image stored in computer. But what about real world objects. How can we pick the color? You can get RGB values by taking photos and then using software packages like GIMP to find its RGB value. Or you can try building a color sensor circuit that would allow pick colors by putting it close to color object and pick its color. Sounds cool, isn’t it? As matter of fact the science behind such device is simple, and everyone can build it with few cheap components. It won’t guarantee very accurate results, but they should be close enough. So janw decided to build a standalone color sensor that would output its RGB value via serial interface. So his device was intended to be universal and compact solution which could be integrated in to any… Continue reading