[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 ...

and in resistor color-code on an enormous symbolic resistor lit by WS2812 RGB LEDs behind. Inside The Great Resistor, the LEDs and baffle plates make the magic work Precision aside, the project ...