int led1Pin = 13;
int led2Pin = 12;
int led3Pin = 11;
int led4Pin = 10;
int led5Pin = 9;
int led6Pin = 8;
int led7Pin = 7;
int led8Pin = 6;
int led9Pin = 5;
int led10Pin = 4;
void setup() {
//initialize the led pins as an outputs
pinMode(led1Pin, OUTPUT);
pinMode(led2Pin, OUTPUT);
pinMode(led3Pin, OUTPUT);
pinMode(led4Pin, OUTPUT);
pinMode(led5Pin, OUTPUT);
pinMode(led6Pin, OUTPUT);
pinMode(led7Pin, OUTPUT);
pinMode(led8Pin, OUTPUT);
pinMode(led9Pin, OUTPUT);
pinMode(led10Pin, OUTPUT);
}
void loop() {
//pick a random color
analogWrite(led1Pin, random(256));
analogWrite(led2Pin, random(256));
analogWrite(led3Pin, random(256));
analogWrite(led4Pin, random(250));
analogWrite(led5Pin, random(256));
analogWrite(led6Pin, random(256));
analogWrite(led7Pin, random(256));
analogWrite(led8Pin, random(256));
analogWrite(led9Pin, random(256));
analogWrite(led10Pin, random(256));
delay(300);//wait one second
/* digitalWrite(led1Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led1Pin, LOW);//turn LED off
delay(100);
//do the same for the other 3 LEDs
digitalWrite(led2Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led2Pin, LOW);//turn LED off
delay(100);
digitalWrite(led3Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led3Pin, LOW);//turn LED off
delay(100);
digitalWrite(led4Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led4Pin, LOW);//turn LED off
delay(100);
digitalWrite(led5Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led5Pin, LOW);//turn LED off
delay(100);
digitalWrite(led6Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led6Pin, LOW);//turn LED off
delay(100);
digitalWrite(led7Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led7Pin, LOW);//turn LED off
delay(100);
digitalWrite(led8Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led8Pin, LOW);//turn LED off
delay(100);
digitalWrite(led9Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led9Pin, LOW);//turn LED off
delay(100);
digitalWrite(led10Pin, HIGH);//turn LED on
delay(100);
digitalWrite(led10Pin, LOW);//turn LED off
delay(100);
*/
}
Above is the code that i wrote which will randomly light colored leds at different times and different brightness. You can use this light code and these lights to light up a part and, if you expanded the code and light, you can light your room in different colored variation. In the circuit with the arduino, you would use pins 4 to 13. These are the pins that i used in the code. It doesn't matter which type of led goes where, but make sure to put a 100 to 200 ohm resistor in series with the led, unless you want to burn out your leds.
Below, is a video of the code lighting lights using the arduino uno and 10 leds with colors of red, green and yellow.
