LED Fading For Beginners

Hi guys!

Today I am going to show you basic project for beginners. (LED)

What do we need?

• Arduino Uno (or shield)

• Breadboard

• Wires

• LED

• 220 or 1K ohm resistor

Here is a picture with instructions:

Link for Arduino programming program: https://www.arduino.cc/en/Main/Software

Commands for programming:

int led = 9;           // the PWM pin the LED is attached to
int brightness = 0;    // how bright the LED is
int fadeAmount = 5;    // how many points to fade the LED by
// the setup routine runs once when you press reset:
void setup() {
 // declare pin 9 to be an output:
 pinMode(led, OUTPUT);
}
// the loop routine runs over and over again forever:
void loop() {
 // set the brightness of pin 9:
 analogWrite(led, brightness);
 // change the brightness for next time through the loop:
 brightness = brightness + fadeAmount;
 // reverse the direction of the fading at the ends of the fade:
 if (brightness <= 0 || brightness >= 255) {
   fadeAmount = -fadeAmount;
 }
 // wait for 30 milliseconds to see the dimming effect
 delay(30);
}