which measures the intensity of light bouncing back from an object as an Arduino drives the LED through all possible colors with PWM signals. The sensor needs to be white balanced before use but ...

The standard design is simple; a prism or diffraction grating to break up a light source into a spectrum and a detector to measure light intensity ... 10-channel color sensor, which can measure ...

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close ... receiver IR1 is only ...