The Complete Beginners Guide to Arduino - 2021 - Blink 3 LEDs - Using Delay

The video tutorial demonstrates how to expand a simple LED circuit from one to three LEDs. It covers the setup of the circuit on a breadboard, including the necessary components like resistors and jumper wires. The tutorial then guides viewers through programming the LEDs to blink in sequence using an IDE, with detailed explanations of the code. Testing and modifying the code to achieve different LED patterns is also discussed. The tutorial concludes with a summary and hints at future projects using different techniques.

What additional components are needed to expand from one LED to three LEDs?

• A microcontroller and a breadboard

• Three more LEDs and a battery

• Two more LEDs, jumper wires, and resistors

• A power supply and a switch

Where should the long leg of the LED be connected?

• To the digital pin

• To the power supply

• To the resistor side

• To the ground rail

What is the purpose of setting pin modes in the code?

• To upload the code to the board

• To initialize the microcontroller

• To set the pins as inputs or outputs

• To define the LED colors

What happens when you upload the code with a 1000 millisecond delay?

• Only one LED blinks continuously

• The LEDs do not blink

• Each LED blinks in sequence with a one-second delay

• All LEDs blink simultaneously

How can you make the LEDs blink faster?

• Increase the delay time

• Change the LED colors

• Add more LEDs

• Decrease the delay time

What is the effect of turning LED three off and immediately back on?

• It turns off all LEDs

• It makes LED three stay on continuously

• It creates a visible blink

• It causes an error in the code

How can you modify the code to have LEDs one and three on initially?

• Use a different microcontroller

• Set both LEDs to high in the code

• Adjust the delay time

• Change the pin numbers

What is the main difference between this project and the single LED project?

• The color of the LEDs

• The power supply voltage

• The type of microcontroller

• The number of LEDs and pins used

What determines the sequence and delay of the LEDs?

• The breadboard layout

• The code written in the IDE

• The type of LEDs used

• The power supply

What will be the focus of the next project?

• Changing the LED colors

• Adding more LEDs to the circuit

• Blinking three LEDs with a new technique

• Using a different microcontroller