Skip to content

Latest commit

 

History

History
45 lines (31 loc) · 1.19 KB

LED_Blinker.md

File metadata and controls

45 lines (31 loc) · 1.19 KB
Raw

LED Blinker Circuit using Arduino

LEDs are small, powerful lights that can be found in a variety of applications. To begin, we will practice blinking an LED, which is the Hello World of microcontrollers. It is as simple as turning on and off a light switch. Establishing this critical baseline will provide you with a solid foundation as we progress to more complex experiments.

Components Required:

  • 1 x Breadboard
  • 1 x Arduino Uno
  • 1 x LED
  • 1 x 330 Ω Resistor
  • 3 x Jumper Wires

Note: If you need to figure out the polarity of an LED, look at its terminals carefully. The shorter of the two terminals, towards the flat edge of the bulb indicates 'negative terminal'.

Circuit Diagram

Arduino Code

void setup()
{
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop()
{
  digitalWrite(LED_BUILTIN, HIGH); // turn the LED 'ON' by making the voltage HIGH
  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
}