LESSON 10: Writing Analog Voltages With the Arduino¶
This lesson teaches how to control the brightness of an LED by writing analog voltages using the Arduino. Here’s a brief overview of what you will learn:
Introduction to Analog Output: Understand the basics of analog outputs compared to digital, learning why and how they allow for varying levels of power output rather than just on/off states.
Setting up the Arduino: Review how to set up the Arduino IDE and configure the board for analog output, specifically focusing on using PWM pins.
Building the Circuit: Instructions on constructing a circuit with an LED and resistor, emphasizing the importance of connecting to PWM-capable pins for analog functionality.
Programming for Variable Brightness: Writing code to adjust the LED’s brightness using the analogWrite() function, demonstrating the effect of different values on LED brightness.
Homework Assignment: Develop a program that incrementally changes the LED’s brightness from dimmest to brightest and then back to dimmest, reinforcing the lesson’s concepts through a dynamic display.
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