LESSON 2: Controlling LED Brightness with PWM & Mixing Colors with RGB LEDs

We learned how to turn an LED on and off but what if you want a level of brightness in between? We’ll be using the Arduino’s PWM pins and learn a new function for controlling the brightness of LEDs. Then we’ll explore RGB LEDs which allow you to mix different levels of red, green and blue to create a nearly endless array of colors.

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LESSON CONTENT:

1. Introduction to PWM (pulse width modulation) pins
2. How PWM works to produce voltages in between 0 & 5
3. Using the analogWrite function to control the brightness of an LED
4. Connect a common cathode RGB LED
5. Using the R, G, and B channels to create custom colors
6. Introduction to Conditional Statements
7. Assignment

MATERIALS:

You’ll be able to follow along and build all the projects featured in this course with the ELEGOO UNO Project Super Starter Kit.

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