LED

What is LED ?

• LED stands for Light Emitting Diode.
• It’s a semiconductor device that emits light when an electric current passes through it.

Things to do

• Connect Annode (+) part of Led to Digital pin of Arduino i.e 13
• Connect Cathode(-) part of Led to Groundpin of Arduino

Interfacing Diagram

• Interface a microcontroller, like an Arduino, with external components, you typically use a combination of wiring and programming. Here’s a short overview of the basic steps:
• Identify the components you want to interface with the Arduino, such as sensors, LEDs, motors, etc.
• Determine the electrical requirements of these components (voltage, current, signal levels).
• Connect the components to the appropriate pins on the Arduino board using jumper wires, breadboard, or soldering depending on your setup.
• Write a program (sketch) in the Arduino IDE to control and interact with these components. This involves configuring pins, reading sensor data, and sending signals to control outputs.
• Upload the program to the Arduino board via USB.
• Test and debug your setup, making adjustments as necessary to ensure proper functionality.

Task

• Glow Led On & Off

Code

• void setup() {
• // initialize digital pin LED_BUILTIN as an output.
• pinMode(13, OUTPUT);
• }
• void loop() {
• digitalWrite(13, HIGH);   // turn the LED on
• delay(1000);              // wait for a second
• digitalWrite(13, LOW);    // turn the LED off   delay(1000);              // wait for a second
• }

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