Arduino Tutorial 1 : Blinking the onboard LED

Today in this blog we will discuss about how to control Arduino’s built in LED through programming. Arduino is an open source electronic platform based on easy to use hardware and software.

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Components

• Arduino Uno : https://amzn.to/3Axir6R

Code

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
}

Code to Note

pinMode(LED_BUILTIN, OUTPUT) – You have to tell ARDUINO that LED_BUILTIN is used as Output or Input. so, here we used the built in function called pinMode().

digitalWrite(LED_BUILTIN, HIGH) – When you are using LED_BUILTIN as output, you can command it to HIGH or LOW.

Result

In this program the built in LED turns ON for one sec and turn OFF for one sec. Similarly we can also reprogram the ARDUINO and change the rate at which it blinks.

Video Components

1. My Camera : https://amzn.to/3L9Nzyb
2. Camera Stand Tripod : https://amzn.to/3Lwo1gd
3. T Bulb : https://amzn.to/3AtLk43
4. Boya Mic : https://amzn.to/3HbTrGc
5. Wall mount stand for Camera and other Mounting Accessories : https://amzn.to/41GLTTR
6. Overhead phone stand : https://amzn.to/442KrwP
7. upReale Professional 11″ inch LED Ring Light with 7 Ft Tripod Stand Combo : https://amzn.to/3V8HXJa

Further Readings

• Arduino Tutorial 2 : External LED Blink
• 2x2x2 Led Cube

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