Since you can't connect the led's directly to the Arduino you will need resistors!!
int redpin = 11 ; // select the pin for the red LED int bluepin = 10 ; // select the pin for the blue LED int greenpin = 9 ; // select the pin for the green LED int val= 0 ; void setup () { pinMode ( redpin, OUTPUT) ; pinMode ( bluepin, OUTPUT) ; pinMode ( greenpin, OUTPUT) ; Serial.begin ( 9600 ) ; } void loop () { for ( val= 255 ; val> 0 ; val-- ) { analogWrite ( redpin, val) ; analogWrite ( bluepin, 255 - val) ; analogWrite ( greenpin, 128 - val) ; delay ( 1 ) ; } for ( val = 0 ; val < 255 ; val++ ) { analogWrite ( redpin, val) ; analogWrite ( bluepin, 255 - val) ; analogWrite ( greenpin, 128 - val) ; delay ( 1 ) ; } Serial.println ( val, DEC) ; }
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