# 3.8 LED 7 Colors

## Hardware Wiring

![LED 7 Colors](https://2341898987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LCFDbcteyTR3tQSs-5x%2F-LCFE4dCRQBMq1ajywfh%2F-LCFEBybz6jAhHV5_hPD%2F030_led_7colors.jpg?generation=1526059553744839\&alt=media)

## Sketch

The code can be found at [Examples\_Arduino - sensor-kit-for-arduino - \_030\_LED\_7Colors - \_030\_LED\_7Colors.ino](https://github.com/LongerVisionRobot/Examples_Arduino/blob/master/sensor-kit-for-arduino/_030_LED_7Colors/_030_LED_7Colors.ino).

```
/*
  Blink
  Turns on an LED on for two second, then off for two second, repeatedly.

  This example code is in the public domain.
 */

void setup() {                
  // initialize the digital pin as an output.
  // Pin 13 has an LED connected on most Arduino boards:
  pinMode(13, OUTPUT);     
}

void loop() {
  digitalWrite(13, HIGH);   // set the LED on
  delay(2000);              // wait for a second
  digitalWrite(13, LOW);    // set the LED off
  delay(2000);              // wait for a second
}
```