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Mastering Arduino by Jon Hoffman

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Summary

In this chapter, we learned how RGB LEDs work, how to use them and looked at the differences between a common anode and common cathode RGB LED. We also learned how the WS2812 (NeoPixel) works and how to use it. NeoPixels come in many different form factors and can be used almost anywhere that you need a large number of RGB LEDs.

In the next chapter, we will look at how to use a small buzzer with the Arduino to produce sound.

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