Arduino and KY-011 Dual Color LED

Depending on the input voltage, series resistors are recommended.

Parts Required

You can connect to the module using dupont style jumper wire.

This should work with other Arduino board – I have tried an Uno and Mega

Name		Link
Arduino Uno		Aliexpress link Amazon Ebay
37 in one sensor kit		Aliexpress link Amazon link
Connecting cables		Aliexpress link Amazon Ebay

Schematic/Connection

Code Example

This example simply switches the red LED on and off then the green LED on and off

int redLED = 11;
int greenLED = 10;
 
void setup ()
{
  // Initialize output pins for the LEDs
  pinMode (redLED, OUTPUT); 
  pinMode (greenLED, OUTPUT); 
}
 
void loop ()
{
  digitalWrite (redLED, HIGH); // LED is switched on
  digitalWrite (greenLED, LOW); // LED is switched off
  delay (2000);
 
  digitalWrite (redLED, LOW); // LED is switched off
  digitalWrite (greenLED, HIGH); // LED is switched on
  delay (2000);
}

Here is a pwm example

int redLED = 11;
int greenLED = 10;
 
int val;
 
void setup () {
  // Initialize output pins for the LEDs
  pinMode (redLED, OUTPUT); 
  pinMode (greenLED, OUTPUT); 
}

void loop () 
{
   for (val = 255; val> 0; val--)
   {
      analogWrite (greenLED, val);
      analogWrite (redLED, 255-val);
      delay (15);
   }

   for (val = 0; val <255; val++)
   {
      analogWrite (greenLED, val);
      analogWrite (redLED, 255-val);
      delay (15);
   }
}

Serial Monitor Output

N/A

Links

https://github.com/getelectronics/ArduinoCode/tree/main/37%20Sensor%20Kit/KY-011_2_Color