Arduino Programming

Question 1

it is the program written in the Arduino IDE that runs on an Arduino board.

Answer 1

a sketch

Question 2

called once when the Arduino board is powered on or reset. It is used to initialize variables, set pin modes, and perform any necessary setup tasks.

Answer 2

setup() function

Question 3

called repeatedly after the setup() function. It contains the main code that will run continuously on the Arduino board.

Answer 3

loop() function

Question 4

these are lines in your code that are not executed. They are meant for explaining the code, providing context, or leaving notes for yourself or others.

Answer 4

comments

Question 5

what are the 2 types of comments

Answer 5

• single-line comment
• multi-line comment

Question 6

used to store and manipulate data in a program.

Answer 6

variables

Question 7

common data types include?

Answer 7

• int: used to store whole numbers.
• float: used to store floating-point numbers with decimal places.
• char: used to store single characters.
• bool: used to store boolean values (true or false).

Question 8

scope of variable that declares outside functions and accessible throughout the program.

Answer 8

global variables

Question 9

scope of variable that declares inside a function and only accessible within that function.

Answer 9

local variables

Question 10

special symbols in C++ that perform operations on variables and values.

Answer 10

operators

Question 11

what are the categories of operators?

Answer 11

• Arithmetic Operators
• Relational Operators
• Logical Operators
• Assignment Operators
• Increment and Decrement
  Operators

Question 11

used to perform basic mathematical operations.

Answer 11

arithmetic operators

Question 11

used to compare two values.

Answer 11

relational operators

Question 12

used to combine multiple conditions. They include logical AND (&&), logical OR (||), and logical NOT (!).

Answer 12

logical operators

Question 12

used to assign a value to a variable.

Answer 12

assignment operators

Question 13

used to increase or decrease the value of a variable by 1.

Answer 13

increment (++) and decrement (–) operators

Question 14

allow a program to make decisions and execute different code paths based on whether a condition is true or false.

Answer 14

conditional statements

Question 15

it is useful for iterating over a range of values or repeating a set of instructions a specific number of times.

Answer 15

for loop

Question 16

this continuously executes a block of code as long as a specified condition remains true

Answer 16

while loop

Question 17

This command initializes the Serial communication at a specified baud rate (e.g., 9600).

Answer 17

Serial.begin(baud_rate)

Question 18

This command sends data to the Serial Monitor followed by a newline character.

Answer 18

Serial.println(data)

Question 19

Similar to Serial.println(), but it does not append a newline character at the end.

Answer 19

Serial.print(data)

Question 20

Reads incoming serial data.
This command retrieves the first byte of incoming serial data available and returns it as a character. If no data is available, it returns -1.

Answer 20

Serial.read()

Question 21

Returns the number of bytes available to read from the serial buffer. This command helps determine if there is any incoming data before attempting to read it, preventing errors when no data is available

Answer 21

Serial.avaialble()

Question 22

used to control digital pins on the Arduino board.

Answer 22

digitalWrite

Question 23

This function is primarily used to control LEDs, relays, or other digital devices connected to the Arduino.

Answer 23

digitalWrite

Question 24

sed to generate a Pulse-Width Modulation (PWM) signal on specific pins of the Arduino board.

Answer 24

analogWrite