Example Code for Arduino-Fade In Out

Hardware Preparation

• DFRduino UNO (or similar) x 1
• LED String x 1
• M-M/F-M/F-F Jumper wires

Software Preparation

• Arduino IDE

Wiring Diagram

Sample Code

/***************************************************
* LED String Lights
* ****************************************************
*  Control a String Light to fade in and out

* @author Dongzi([email protected])
* @version  V1.0
* @date  2016-5-26
* All above must be included in any redistribution
* ****************************************************/
int t;
#define  Light_string  3
void setup() {

  pinMode( Light_string, OUTPUT);
}
void loop() {

  for(t=5;t<255;t++ ) // turn the Light string on (HIGH is the voltage level) little and little.
  {
    analogWrite( Light_string, t);
    delay(10);
  }

  if(t>=255)         // turn the Light string off (HIGH is the voltage level) little and little.
  {
    for(t==255;t>5;t--)
    {
      analogWrite( Light_string, t);
      delay(10);
    }
  }
}