Arduino UNO: LED Blinking Experiment

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Questions and Answers

The LED blinking experiment primarily demonstrates which basic microcontroller functionality?

Wireless communication protocols
Toggling an LED ON and OFF (correct)
Analog signal processing
Complex mathematical computations

In the LED blinking experiment, the LED is directly connected to the Arduino digital output pin without any other components.

False (B)

What is the purpose of the delay function in the Arduino code for the LED blinking experiment?

to control the duration of the LED being on and off

The `digitalWrite()` function in Arduino is used to set a digital pin to either ______ or LOW.

HIGH

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Match each component with its function in the LED blinking experiment:

Arduino UNO = Microcontroller that controls the LED LED = Light-emitting diode that blinks Resistor = Limits current to the LED

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What is the primary purpose of the resistor used in series with the LED?

To limit the current flowing through the LED (C)

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The `void setup()` function in the Arduino code runs repeatedly during the program's execution.

False (B)

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What does the term 'digital output' refer to in the context of the LED blinking experiment?

the ability of the arduino to send a binary signal (high or low) to the led

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The `pinMode()` function is used to configure a specific pin on the Arduino as either an INPUT or an ______.

OUTPUT

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Match each term with its corresponding description in the context of the LED blinking experiment:

Microcontroller = A small computer on a chip that can be programmed to control electronic devices Digital Signal = A signal that represents information as discrete values, typically HIGH or LOW LED = A semiconductor light source that emits light when current flows through it

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Which function is used to specify the pin used for the LED and set it as an output?

<code>pinMode()</code> (C)

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In Arduino code, `HIGH` represents 0 volts, while `LOW` represents 5 volts.

False (B)

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What is the role of the `loop()` function in Arduino programming?

to run repeatedly after the setup function

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The unit of measurement for resistance is ______.

ohms

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Match the code snippets with their functions:

<code>int LEDpin = 13;</code> = Declares an integer variable <code>LEDpin</code> and assigns the value 13 to it <code>digitalWrite(LEDpin, HIGH);</code> = Sets the digital pin associated with <code>LEDpin</code> to HIGH (5V) <code>delay(1000);</code> = Pauses the program execution for 1000 milliseconds (1 second)

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Which of the following describes what the provided code achieves?

`int LEDpin = 13;` `void setup() { pinMode(LEDpin, OUTPUT); } void loop() { digitalWrite(LEDpin, HIGH); delay(1000); digitalWrite(LEDpin, LOW); delay(1000); }`

Blinks an LED connected to digital pin 13 every second. (C)

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The LED will not light up if the resistor is not connected correctly in series with it.

True (A)

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Explain in simple terms the relationship between the resistor value and the brightness of the LED.

higher resistance means dimmer led

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The Arduino UNO has a built-in LED connected to digital pin ______.

13

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Match the concepts with their functions in the context of the experiment:

Arduino Programming = Writing code to control the behavior of the Arduino microcontroller Hardware Interfacing = Connecting physical components (like LEDs and resistors) to the Arduino Digital Output Control = Using the Arduino to turn an LED on and off

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Flashcards

What is Arduino UNO?

A microcontroller board used to control electronic components by programming it with specific instructions.

What is LED Blinking?

Turning an LED on and off repeatedly using a microcontroller.

What is Microcontroller Programming?

Using code to control electronic components connected to a microcontroller.

What is a Digital Signal?

A type of electronic signal represented by two distinct levels, typically HIGH (on) and LOW (off).

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What is a Resistor?

A component that limits the flow of electrical current in a circuit.

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What is an LED?

An electronic component that emits light when an electrical current passes through it.

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What is Delay?

A short pause inserted into the program to control the timing of events.

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What is Pin Mode?

An Arduino command that sets a specific pin to either input or output mode.

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What is 'digitalWrite'?

An Arduino command that sets a digital pin to either HIGH (on) or LOW (off).

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What is 'void setup()?'

Part of the code that runs once when the Arduino starts up.

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What is 'void loop()?'

Part of the code that runs repeatedly in a loop after the setup is complete.

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Study Notes

The experiment is about LED blinking using Arduino UNO.
The experimenter's name is Tanusree Samanta.
The roll number is INU2024053200037.
The department is CSE(AIML).
The date of the experiment is January 20th, 2025.
The date of submission is January 27th, 2025.

Objective

The objective is to understand and demonstrate control of an LED using Arduino UNO.
It involves writing and uploading simple Arduino code.
Introduces basic concepts of microcontroller programming.
Digital output and circuit connection are also introduced.

Theory

The LED blinking experiment uses Arduino UNO.
Demonstrates basic microcontroller functionality.
Functionality is demonstrated by toggling an LED ON & OFF.
An LED is connected to an Arduino digital output pin through a resistor.
The Arduino sends a high signal & low signal, with delays, to create a blinking effect.

Components

UI: Arduino UNO R3, quantity: 1
RI: 100-ohm Resistor, quantity: 1
DI: Red LED, quantity: 1

Circuit Diagram

Includes a diagram showing the Arduino UNO (U2) connected to a resistor (R1) and an LED (D1).
The LED is labeled as "white".
Illustrates the pin connections on the Arduino.

Arduino Code

Code includes setting the LED pin.
Includes defining the delay time.
The setup function sets the LED pin as an output.
The loop function toggles the LED on and off with a delay.
int LEDpin = 13; defines the pin connected to the LED.
int delayT = 1000; sets the delay time.
pinMode(LEDpin, OUTPUT); configures the LED pin as an output.
digitalWrite(LEDpin, HIGH); turns the LED on.
delay(delayT); pauses the program.
digitalWrite(LEDpin, LOW); turns the LED off.

Conclusion

The experiment demonstrates basic digital output control.
Shows how to program a microcontroller to toggle an LED on and off.
Provides a foundational understanding of Arduino programming.
Includes hardware interfacing and the use of delays.
Forms the basis for more complex projects.

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Arduino UNO: LED Blinking Experiment

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Podcast

Questions and Answers

The LED blinking experiment primarily demonstrates which basic microcontroller functionality?

In the LED blinking experiment, the LED is directly connected to the Arduino digital output pin without any other components.

What is the purpose of the delay function in the Arduino code for the LED blinking experiment?

The digitalWrite() function in Arduino is used to set a digital pin to either ______ or LOW.

Match each component with its function in the LED blinking experiment:

What is the primary purpose of the resistor used in series with the LED?

The void setup() function in the Arduino code runs repeatedly during the program's execution.

What does the term 'digital output' refer to in the context of the LED blinking experiment?

The pinMode() function is used to configure a specific pin on the Arduino as either an INPUT or an ______.

Match each term with its corresponding description in the context of the LED blinking experiment:

Which function is used to specify the pin used for the LED and set it as an output?

In Arduino code, HIGH represents 0 volts, while LOW represents 5 volts.

What is the role of the loop() function in Arduino programming?

The unit of measurement for resistance is ______.

Match the code snippets with their functions:

Which of the following describes what the provided code achieves? int LEDpin = 13; void setup() { pinMode(LEDpin, OUTPUT); } void loop() { digitalWrite(LEDpin, HIGH); delay(1000); digitalWrite(LEDpin, LOW); delay(1000); }

The LED will not light up if the resistor is not connected correctly in series with it.

Explain in simple terms the relationship between the resistor value and the brightness of the LED.

The Arduino UNO has a built-in LED connected to digital pin ______.

Match the concepts with their functions in the context of the experiment:

Flashcards

What is Arduino UNO?

What is LED Blinking?

What is Microcontroller Programming?

What is a Digital Signal?

What is a Resistor?

What is an LED?

What is Delay?

What is Pin Mode?

What is 'digitalWrite'?

What is 'void setup()?'

What is 'void loop()?'

Study Notes

Objective

Theory

Components

Circuit Diagram

Arduino Code

Conclusion

Studying That Suits You

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The `digitalWrite()` function in Arduino is used to set a digital pin to either ______ or LOW.

The `void setup()` function in the Arduino code runs repeatedly during the program's execution.

The `pinMode()` function is used to configure a specific pin on the Arduino as either an INPUT or an ______.

In Arduino code, `HIGH` represents 0 volts, while `LOW` represents 5 volts.

What is the role of the `loop()` function in Arduino programming?

Which of the following describes what the provided code achieves?

`int LEDpin = 13;` `void setup() { pinMode(LEDpin, OUTPUT); } void loop() { digitalWrite(LEDpin, HIGH); delay(1000); digitalWrite(LEDpin, LOW); delay(1000); }`