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);
}