Arduino for Beginners - 2022 Complete Course - Set an Analog Value - Change the Brightness of an LED

The video tutorial explains how to modify a circuit to use the analog write function with PWM on an Arduino. It covers changing the pin connection to ensure compatibility, setting up the Arduino IDE, and writing code to control LED brightness using PWM values. The tutorial demonstrates testing different PWM values to observe changes in LED brightness.

Why is it necessary to change the pin from 12 to 11 for the LED?

• Pin 12 does not support PWM.

• Pin 11 is the default pin for LEDs.

• Pin 11 is closer to the power source.

• Pin 12 is reserved for sensors.

What is the first step in changing the pin connection on the Arduino board?

• Remove the LED from the circuit.

• Connect the wire to the power supply.

• Plug the wire into pin 13.

• Unplug the wire from pin 12.

In the Arduino IDE, what is the purpose of setting the pin mode to output?

• To save power consumption.

• To initialize the pin for sending signals.

• To receive data from the LED.

• To change the LED color.

What does the analog write function require as its first parameter?

• The LED color.

• The current strength.

• The pin number.

• The voltage level.

What PWM value would turn the LED off completely?

• 100

• 128

• 0

• 255

What is the effect of setting the PWM value to 255?

• The LED will be at full brightness.

• The LED will be off.

• The LED will be dim.

• The LED will blink rapidly.

How does changing the PWM value affect the LED?

• It affects the LED's temperature.

• It changes the LED's color.

• It alters the LED's brightness.

• It modifies the LED's shape.