LESSON 11: Pulse Width Modulation (PWM) Simulation of Analog Voltages¶
This lesson explores the fundamentals of Pulse Width Modulation (PWM) as a method for simulating analog voltages using Arduino’s digital pins. Here’s a brief overview of what you will learn:
Understanding PWM: Delve into the basics of PWM and its role in simulating analog outputs from digital signals, essential for controlling devices like LEDs in variable intensities.
Digital vs. Analog Signals: Contrast the nature of digital outputs, which are either fully on or off, with the needs of applications requiring a range of outputs, and how PWM bridges this gap.
Setting Up PWM on Arduino: Learn the specific setup for PWM on Arduino, including selecting the correct pins (those marked with a squiggly line) and configuring them in the IDE.
Practical PWM Application: Implement a practical exercise to control an LED’s brightness using PWM, illustrating the concept of varying voltage levels over time.
Homework Assignment: Enhance understanding by experimenting with different PWM values to vary an LED’s brightness, reinforcing the practical applications of PWM learned in the lesson.
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