In this project, we will be using a standard through-hole LED. Package Type: LEDs come in various package types, such as through-hole and surface mount.Common viewing angles for LEDs range from 90 to 120 degrees. It determines how wide or narrow the light spread is. Viewing Angle: The viewing angle refers to the angle at which the LED emits light. LEDs have different forward current requirements, usually ranging from 5 to 20 milliamperes (mA). Forward Current: The forward current is the amount of current that should flow through the LED to achieve the desired brightness.However, it is important to check the datasheet or product specifications of your specific LED to ensure the correct voltage range. Operating Voltage: Typically, LEDs operate at low voltages, usually around 2 to 3.3 volts.Pinoutīefore we proceed, let’s explore some specifications of the LED used in this project: They come in different colors and can be easily controlled using microcontrollers like Arduino. LEDs are commonly used in various applications, such as indicators, displays, and lighting. LED stands for Light-Emitting Diode, and it is a semiconductor device that emits light when an electric current passes through it. To get started with the LED Blink Code | Arduino Tutorial, you will need the following components Components In this tutorial, we will guide you through the step-by-step process of setting up the Arduino board, connecting the LED, and writing the code to make it blink. By connecting a simple LED to the Arduino UNO board and programming it to blink, you can bring an element of interactivity and visual appeal to your projects. In short, always take a few minutes to comment your code.In this Tutorial, we learn how to LED Blink Code | Arduino Tutorial, The Arduino LED Blink project is an excellent starting point for beginners who are eager to delve into the world of Arduino programming and electronics. Your life would be so much more enjoyable. If you had commented your code from the beginning, you’d know exactly what each variable was used for, what each function did, and what each pin controlled. So now, months later, when you’re in a completely different state of mind, you can’t remember what the code does, and you have to start all over. In all the excitement, you didn’t comment your code. You wrote that earlier code in a highly creative state of mind, when your brain chemicals were flowing like a river and your ideas were flashing like summer lightning. But you open up the sketch and…none of it makes sense! “No sweat, I’ll just reuse my earlier code,” you think. Eureka! You hook up your Arduino, bang out your code, load it up, and voilà: It works.įast forward: Months later, working on another project, you want your Arduino to do something similar to your earlier project. Suppose, after hours trying to get your Arduino to do something, the solution suddenly comes to you. Adding comments to code is a very good idea. tells the computer that everything afterward on that line is a comment.Ĭommenting code simply means adding explanations in plain English to your sketch that describe how the code works. * and */ tell the computer that everything between those marks should be ignored while running the program. */ sections and the // lines in the example above? Those are ways to put comments into your code to explain to others (and to yourself) what the code does: In this sketch, the code in loop() simply tells Arduino to set pin 13 HIGH-taking it up to 5 volts-for 1000 milliseconds (one second), followed by setting it LOW-taking it down to 0 volts-for another 1000 milliseconds. Pin 13 has an LED connected on most Arduino boards:ĭigitalWrite(13, HIGH) // set the LED onĭigitalWrite(13, LOW) // set the LED off initialize the digital pin as an output. This example code is based on example code You can find this code in the Arduino IDE under File → Examples or on the EMWA GitHub Repository | chapter-1 | blink.
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