Arduino if-else and else-if

Arduino if-else and else-if
Arduino if-else and else-if

Every Arduino if-else and else-if  program can be converted into another programming call by repeating the code for each condition. We humans make decisions. We consider multiple factors before deciding. If we take this road, it will happen; if not, I will choose another. This resembles Arduino. Arduino monitors the condition. The system will execute the instruction if he identified a genuine condition. If not, another command is run. All of this decision-making intelligence comes from If-Else statement programming. This if else statement has two decisions. A single decision allows a comparison, and if the comparison is true, the command to the right executes. If the comparison is false, a different command is executed.

The compound decision is whether a comparison is true or false and whether the command is executed until the finish. When the comparison series is correct, the true command is executed. False is a fail-safe command that is executed when the comparison series has no correct condition. Similar statements are used in Matlab and Labview programming. In fact, Arduino employs the identical statement. Thus, humans make blunders. In brewing hot coffee, we confuse salt for sugar. The Arduino program will include this. Run-time failures induced by incorrect conditions are specific problems created by mistakes. Many beginners make compile-time mistakes owing to incorrect sintax. However, Arduino software usually displays helpful syntax error signals. Event tracing can help you program correctly. I’ll elaborate later. Advanced programming will include event tracing. Start with the basics. Advanced programming uses conditional statements more than if statements.

About Arduino’s

By the way, clean code is code without errors. Future posts may discuss clean code. Stay tuned! Today, we’ll learn Arduino’s most simple but powerful If-Else statement programming. Okay, I hope you have the required hardware and can build a simple Arduino program. You may not know how to develop a program, but you’re open to new ideas without complaining. Every new thing is hard! Proceed with the process. As usual, learn the LED. Consider how this lead should be programmed. I connected the positive led to pin 13 and ground to Arduino. I suppose most people understand connecting positive and negative terminals to themselves. The tricky part is programming code. Our next section will be programming. The theory or coding behind the program will be taught first.

Develop this habit while facing a new problem. Good preparation and a friendly plan usually help you do more and faster. Remember, learning never ends. Another interesting topic for a future post is learning activity objectives. Let’s begin theoretical class. Guess you’ll like it. Arduino programs’ main control flow is circumstance reading. You may have a good comment; we’ll see how descriptive programming works. Thus, If-Else statement programming is powerful and widely utilized. If the condition is met, the action will happen. If not, further action is taken. Arduino’s If-Else statement programming is unusual. There are format and rule requirements.

Explanation of If-Else Statements

The complicated and thorough If-Else statement differs from the If statement. It lists the positive action for the true condition and the false condition in an If statement. In the Arduino If-Else statement, a function is started and variables declared. However, declaring the output pin variable with the Arduino pin number affects it slightly. Beginning with ‘if,’ the condition is in parenthesis. This comparison statement tests a condition. The code behind the If-Else phrase runs if the If condition is true.

If that condition is false, jump down and run the code after the Else line. The Arduino code is smart because it’s the same method for controlling several devices—copying and pasting the generic code and adding the application’s criteria. Any Arduino programmer can write, troubleshoot, and experiment with more sophisticated control codes with this basic If-Else statement knowledge. Anyone can enjoy and succeed with binary inputs, digital combination lock codes, or even complex sequences like tic-tac-toe. Work Myanmar, Tech. “Basics of the If-Else Statement (Arduino).” Programming Electronics Academy, 6 Sept. 2016. Web.

 Importance in Arduino Programming

If-else statements are essential for constructing code that responds to input parameters, as every programmer knows. Since most Arduino actions are event-driven, if-else expressions are equally significant. Running repeatedly is an example. Each cycle, the software checks for a condition to determine its action. Without if-else expressions, the code cannot make rational test-based conclusions. If-else statements would make most Arduino actions impossible, making the microcontroller useless. Moreover, if-else phrases perform actions under specified conditions. When controlling robots or other components with Arduino, if-else statements are crucial. When we develop code to move a motor, we probably want it to do several things based on certain conditions. The motor could change speeds or direction based on situations like whether a sensor detects an object, which is common in autonomous robots.

You have an Arduino and are ready to develop fantastic projects. However, you soon learn that running code line by line isn’t enough—you need to make program judgments. Arduino if-else statements help. These conditional statements let your Arduino verify conditions and execute code based on the result. We’ll cover Arduino if, else, and else if statements in this beginner’s guide to make your creations smarter and more responsive. I’ll explain the syntax, provide examples, and create a basic if-else Arduino project that makes decisions. Turn on your Arduino, and let’s begin!

An Introduction to Arduino if-Else Statements

Your Arduino uses if-else expressions to decide and respond based on your conditions. These conditional statements are essential for interactive applications that respond to sensor input or user requests.

The Basic if-else

A simple if-else statement contains two parts:

If (condition) { do something } else { do something else }

The first block’s code runs if the condition is true. Alternatively, the else block code is run. As an example:

analogRead(A0) > 500 digitalWrite(LED, HIGH); // turn on LED; otherwise { digitalWrite(LED, LOW); // turn off LED}

This turns on the LED if analog input A0 is greater than 500 and off otherwise.


Linking else if statements creates more sophisticated reasoning. As an example:

If analogRead(A0) > 800, digitalWrite(LED, HIGH) to turn on the LED; else, digitalWrite(LED, LOW) to turn off the LED; else, digitalWrite(LED, HIGH) to blink the LED.

This will turn the LED on if the input is over 800, off if 500–800, and flickering otherwise.

Comparison Operators

In if-else expressions, employ comparison operators such as > (greater than), < (less than), == (equal to),!= (not equal to), >= (greater than or equal to), and <= (less than or equal to).

if-else statements are essential to Arduino programming. Try varied conditions and logic to make your interactive creations real-world!

The Syntax of if-Else Statements in Arduino

If-else statements regulate Arduino program execution. They verify a condition and run code if true.

The Basic Structure

Basic if-else syntax:

if (condition) { // perform code if condition is true If the condition is false, execute the code block in the otherwise block.

As an example:

If age > 18, print “You are an adult!”; otherwise, print “You are a minor.”

This will print “You are an adult!” or “You are a minor.” if age is over 18.

Otherwise-If Statements
Use else-if statements to chain multiple conditions:

Comparing Values

Compare values using these operators:

Equal to

Not the same

> Greater than

< less than

> = greater than

Less than or equal to

As an example:

If (age == 30) { Serial.println(“You are 30 years old!”);
If (30!=age) // Checks age < 30 Serial.println(“You are not 30 years old!”);

Programmers must study if-else expressions to master Arduino. Use them in your projects to practice program flow control!

In if, use comparison operatorsElse Statements
Equals Operator
The == operator compares two operands.. As an example:

Int a = 5; b = 10;

// This block will not execute if a == b.

Since an is not b, the if condition is false.

Not Equal Operator
The not equal operator (!=) compares two operands.  As an example:

set a = 5; set b = 10;

If (a!= b) { // Execute this block.

Since an is not b, the if condition is true.

Less Than Operator

The less than operator (<) determines if the left operand is less than the right operand. If yes, the condition is met. As an example:

Int a = 5; b = 10;

if (a < b) { // Execute this block

Since an is less than b, the if condition is true.

More than operator

The greater than operator (>) tests if the left operand is greater than the right. If yes, the condition is met. As an example:

set a = 15; set b = 10;

if (a > b) { // Execute this block.

Since a > b, the if condition is true.

Comparison operators in if-else statements let you examine conditions and execute code. Learning them will make Arduino sketches more engaging.

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