Arduino - RGB tri-color light

I implemented the RGB three-color light case based on the arduino UNO R3 kit. In this complete kit, there are RGB three-color light integrated devices.

As for the circuit principle of RGB three-color lamp, you can search it directly on the Internet, so I won’t go into details here. Next is an example of RGB three-color lights.

RGB three-color light - running water light effect:

#define RED   12
#define GREEN 8
#define BLUE  7

void red(void);
void green(void);
void blue(void);

void setup() {
  // put your setup code here, to run once:
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT); 
  pinMode(BLUE, OUTPUT);

  digitalWrite(RED, LOW);
  digitalWrite(RED, LOW);
  digitalWrite(RED, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  red();
  delay(1000);
  green();
  delay(1000);
  blue();
  delay(1000);
}

void red(void)
{
  digitalWrite(RED, HIGH);
  digitalWrite(GREEN, LOW);
  digitalWrite(BLUE, LOW);
}

void green(void)
{
  digitalWrite(RED, LOW);
  digitalWrite(GREEN, HIGH);
  digitalWrite(BLUE, LOW);
}

void blue(void)
{
  digitalWrite(RED, LOW);
  digitalWrite(GREEN, LOW);
  digitalWrite(BLUE, HIGH);
}

RGB three-color light - breathing light effect:

#define LED_red   11
#define LED_green 10
#define LED_blue  9

void breath(int pin);

void setup() {
  // put your setup code here, to run once:
  pinMode(LED_red, OUTPUT);
  pinMode(LED_green, OUTPUT);
  pinMode(LED_blue, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  breath(LED_red);
  breath(LED_green);
  breath(LED_blue);
}

void breath(int pin)
{
  for(int i = 0; i <= 255; i++)
  {
    analogWrite(pin, i);
    delay(5);
  }
  for(int i = 255; i >= 0; i--)
  {
    analogWrite(pin, i);
    delay(5);
  }
  delay(100);
}

Here I would like to remind everyone: on the Arduino UNO board, there is a pwm output port, you need to pay attention to it, and here I use the analogWrite(int pin, int value) function, which is specially used for pwm debugging output in the arduino function library. of.

Arduino - RGB tri-color light

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