KY-011 TWO COLOR LED MODULE

KY-011 Description

3mm Two color LED module KY-011 for Arduino, emits red and green light. You can adjust the amount of each color using PWM. This module is similar to KY-029.

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KY-011 Specifications

This module consist of a common cathode 3mm red/green LED and a 0Ω resistor, Since operating voltage is 2.0v ~2.5v you'll need to use limiting resistors to prevent burnout when connecting to the Arduino.

Operating Voltage	2.0v ~ 2.5v
Working Current	10mA
Diameter	3mm
Package Type	Diffusion
Color	Red + Green
Beam Angle	150
Wavelength	571nm + 644nm
Luminosity Intensity (MCD)	20-40; 40-80

KY-011 Connection Diagram

We'll use a couple of 330Ω resistors to limit the current from the Arduino and prevent burning the LED.

KY-011	Breadboard	Arduino
G	330Ω resistor	Pin 10
R	330Ω resistor	Pin 11
Y		GND

click to enlarge

KY-011 Example Code

The following Arduino sketch will gradually alternate between red and green color.

int redpin = 11; // pin for red signal
int greenpin = 10; // pin for green signal
int val;

void setup() {
 pinMode(redpin, OUTPUT);
 pinMode(greenpin, OUTPUT);
}

void loop() {
 for(val = 255; val > 0; val--) { 
  analogWrite(redpin, val); //dim red
  analogWrite(greenpin, 255 - val); // brighten green
  delay(15);
 }
 for(val = 0; val < 255; val++) { 
  analogWrite(redpin, val); //brighten red
  analogWrite(greenpin, 255 - val); //dim green
  delay(15);
 }
}