# 3.7 LED Red Green GND-Shared

## Hardware Wiring

![LED Red Green](https://2341898987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LCFDbcteyTR3tQSs-5x%2F-LCFE4dCRQBMq1ajywfh%2F-LCFERTIaG_3R4G7wVoX%2F026_led_rg.jpg?generation=1526059617430268\&alt=media)

## Sketch

The code can be found at [Examples\_Arduino - sensor-kit-for-arduino - \_026\_LED\_RG - \_026\_LED\_RG.ino](https://github.com/LongerVisionRobot/Examples_Arduino/blob/master/sensor-kit-for-arduino/_026_LED_RG/_026_LED_RG.ino).

```
//Arduino test code:
int redpin = 11;    // select the pin for the red LED
int bluepin =10;    // select the pin for the blueLED
int val;

void setup() {
  pinMode(redpin, OUTPUT);
  pinMode(bluepin, OUTPUT);
  Serial.begin(9600);
}

void loop() 
{
  for(val=255; val>0; val--)
  {
    analogWrite(11, val);
    analogWrite(10, 255-val);
    delay(15); 
  }
  for(val=0; val<255; val++)
  {
    analogWrite(11, val);
    analogWrite(10, 255-val);
    delay(15); 
  }
  Serial.println(val, DEC);
}
```