My scheme is very basic: I use RGB LED with Arduino Uno. 5v is connected to anode, and pins 9-11 are connected to cathodes.
When using following sketch, my LED is producing white colour, which red, green and blue components are on:
int redPin = 9;
int greenPin = 10;
int bluePin = 11;
void setup(){}
void loop(){
analogWrite(redPin, 0);
analogWrite(greenPin, 0);
analogWrite(bluePin, 0);
}
But when I refer to docs for PWM:
A call to analogWrite() is on a scale of 0 - 255, such that analogWrite(255) requests a 100% duty cycle (always on)
When I write 0 to all pins, I expect led to be off. What am I missing?
