[Fjord Carver] brings together an RGB LED and CdS Photoresistor to make a color sensor ... This time around it’s an Arduino doing the measuring instead of a PIC. So why isn’t that sensor ...

Their sensor uses a four-lead RGB LED, but we suppose a ... of light bouncing back from an object as an Arduino drives the LED through all possible colors with PWM signals. The sensor needs ...

If you’d like to get more specific, Michael Klements’ Arduino-based scanner ... the sensor and measure colors, along with a 16×2 panel. An optional RGB LED attempts to copy the shade of ...

Here is a small demonstration changing color of the addressable LED WS2812B. Hardware and software for this single WS2812B experiment is given below. Before uploading the code (sketch) to Arduino, ...