const int redLedpin = 14;
const int greenLedpin = 18;
const int blueLedpin = 17;

void setRGB(int red, int green, int blue) {
  analogWrite(redLedpin, red);
  analogWrite(greenLedpin, green);
  analogWrite(blueLedpin, blue);
}

void setup() {
  Serial.begin(115200);
  pinMode(redLedpin, OUTPUT);
  pinMode(greenLedpin, OUTPUT);
  pinMode(blueLedpin, OUTPUT);
  setRGB(0,0,0);
}

void loop() {
  setRGB(255, 0, 0);
  delay(1000);
  setRGB(0, 255, 0);
  delay(1000);
  setRGB(0, 0, 255);
  delay(1000);
  setRGB(255, 255, 0);
  delay(1000);
  setRGB(0, 255, 255);
  delay(1000);
  setRGB(255, 0, 255);
  delay(1000);
  setRGB(255, 255, 255);
  delay(1000);
  setRGB(0, 0, 0);
  delay(2000);
}