SMD 3Color LED Module(KY-009)

This is an LED module that controls Red, Blue, Green primary colors with values from 0 to 255.

It is similar to a 3-color LED model.

Specifications

Operating Voltage: 5V
Operating Current: 20mA ~ 30mA

Example Usage Hardware (excluding cables and breadboard)

Arduino board
SMD 3Color LED Module
Push button
Jumper cables

Connection

Use pins D9, D10, D11 for PWM output for analog output.

Arduino	SMD 3Color LED Module	PUSH Button
GND	-	connected
D12		connected
D11	R
D10	G
D9	B

Example Code

This is an example where the LED color changes every time the button is pressed.

#define btn1 12
#define red 11
#define green 10
#define blue 9

int btnFlg1 = 0;

int btn1Chk() {
  if (digitalRead(btn1) == 0) {
    btnFlg1 = 1;
    return 0;
  }
  if (btnFlg1 == 1) {
    btnFlg1 = 0;
    return 1;
  }
  return 0;
}

int state = 0;

void setup() {
  pinMode(btn1, INPUT_PULLUP);
}

void loop() {
  if (btn1Chk()) {
    switch (state) {
      case 0:
        analogWrite(red, 255);
        break;
      case 1:
        analogWrite(red, 0);
        analogWrite(green, 255);
        break;
      case 2:
        analogWrite(green, 0);
        analogWrite(blue, 255);
        break;
      case 3:
        analogWrite(red, 255);
        analogWrite(green, 255);
        analogWrite(blue, 0);
        break;
      case 4:
        analogWrite(red, 255);
        analogWrite(green, 0);
        analogWrite(blue, 255);
        break;
      case 5:
        analogWrite(red, 0);
        analogWrite(green, 255);
        analogWrite(blue, 255);
        break;
      case 6:
        analogWrite(red, 255);
        analogWrite(green, 255);
        analogWrite(blue, 255);
        break;
      case 7:
        analogWrite(red, 0);
        analogWrite(green, 0);
        analogWrite(blue, 0);
        break;
      default:
        break;
    }
    state++;
    if (state > 7) state = 0;
  }
  delay(10);
}

Execution Result

Please check the working video at the link.