RGB LED displaying the wrong colours

Projects General Guidance
1

From the following code, my colours are displaying as red, purple, violet and blue.

I am looking for red, orange, yellow and green - which is how my RGB code reads.

Could anyone advise on this please? Thank you

int red_light_pin= 11;
int green_light_pin = 10;
int blue_light_pin = 9;
void setup() {
pinMode(red_light_pin, OUTPUT);
pinMode(green_light_pin, OUTPUT);
pinMode(blue_light_pin, OUTPUT);
}
void loop() {
RGB_color(255, 0, 0); // Red
delay(3000);
RGB_color(255, 125, 0); // Orange
delay(3000);
RGB_color(255, 255, 0); // Yellow
delay(3000);
RGB_color(125, 255, 0); // Green
delay(3000);
}
void RGB_color(int red_light_value, int green_light_value, int blue_light_value)
{
analogWrite(red_light_pin, red_light_value);
analogWrite(green_light_pin, green_light_value);
analogWrite(blue_light_pin, blue_light_value);
}

2

Sounds like you have the green and blue leads of the LED wired to the wrong pins.

As a quick test, try changing

int green_light_pin = 10;
int blue_light_pin = 9;

to this:

int green_light_pin = 9;
int blue_light_pin = 10;
3

Either wiring is wrong or the LEDs themselves are reversed. I had the latter with one 5m strand I bought on eBay.

.

4

Alter the code do that each single colour is displayed on its own red, green, blue - that will tell you if they are wired correctly .