> For the complete documentation index, see [llms.txt](https://longer-vision-robot.gitbook.io/arduino-full-stack/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://longer-vision-robot.gitbook.io/arduino-full-stack/04_infrared_sensors/007_laseremitter.md).

# 4.2 Laser Emitter

## Hardware Wiring

![Laser Emitter](https://2341898987-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LCFDbcteyTR3tQSs-5x%2F-LCFE4dCRQBMq1ajywfh%2F-LCFEV6d2efBOYF_hcyO%2F007_laseremitter.jpg?generation=1526059632809223\&alt=media)

## Sketch

The code can be found at [Examples\_Arduino - sensor-kit-for-arduino - \_007\_LaserEmit - \_007\_LaserEmit.ino](https://github.com/LongerVisionRobot/Examples_Arduino/blob/master/sensor-kit-for-arduino/_007_LaserEmit/_007_LaserEmit.ino).

```
void setup()
{
  pinMode(13, OUTPUT); // Define Pin 13 as Digital Output
}
void loop() {
  digitalWrite(13, HIGH); // Open Laser Head
  delay(1000);
  // Delay 1 second
  digitalWrite(13, LOW); // Close Laser Head
  delay(1000);
  // Delay 1 second
}
```