Description: Module introduces: RGB LED module is made of full-color LED with patch. Through the R, G, B three pin PWM voltage input can be adjusted three primary colors ( red / blue / green ) strength in order to achieve full-color mixing effect. Control of the module with the Arduino cool lighting effects can be achieved . Product features: 1. Using 5050 full color LED 2. RGB trichromatic limiting resistor to prevent burnout 3. Through the PWM adjusting three primary colors can be mixed to obtain different colors 4. With a variety of single-chip interface 5. Operating voltage: 5V 6. LED drive mode: common cathode driver Test Code: 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; void setup() { pinMode(redpin, OUTPUT); pinMode(bluepin, OUTPUT); pinMode(greenpin, OUTPUT); Serial.begin(9600); } void loop() { for(val=255; val>0; val--) { analogWrite(11, val); analogWrite(10, 255-val); analogWrite(9, 128-val); delay(1); } for(val=0; val<255; val++) { analogWrite(11, val); analogWrite(10, 255-val); analogWrite(9, 128-val); delay(1); } Serial.println(val, DEC);