We can obtain many other colors by mixing up these colors.
Download Rgb Led Schematic Symbol Background. Parallel (this page has a simple explanation with great illustrations, and if you are unfamiliar with reading schematics, here is a pretty good tutorial and a symbol guide. We need to create three same blocks of circuits for three leds (red, green, blue).
RGB LED :: mbeckler.org from www.mbeckler.org
At first glance, a 5mm rgb led looks just like the regular 5mm leds, however, inside the standard package, there are actually three leds; The current flowing through each channel of the led driver is constant and so power dissipation depends on the voltage on each channel, which is the difference between the supply voltage (dc bus). Rgb led circuit three general purpose 2n2222 transistors are used to drive each color of the red/green/blue led.
We've just experimented with the library example.
So it actually consists of 3 separate leds red, green and blue packed in a single case. This kind of strips are very flexible and can be cut to any length you want. For this tutorial we'll use a common cathode one (common gnd pin for all three leds). A sample that makes an led blink red, green, and blue with windows 10 iot core.
