pxt-calliope/docs/lessons/blink.md

# blink blocks lesson

Learn how to create a blinking LED.

### @video td/videos/blink-0

## Topic

Plot

## Quick links

* [activity](/microbit/lessons/blink/activity)
* [quiz](/microbit/lessons/blink/quiz)
* [quiz answers](/microbit/lessons/blink/quiz-answers)
* [challenges](/microbit/lessons/blink/challenges)


## Prior learning / place of lesson in scheme of work 

Learn how to control a blinking LED. We will be learning how to create a blinking app using forever as well as simple commands, such as plot, unplot and pause.


## Documentation

```docs
led.plot(0, 0)

led.unplot(0, 0)

basic.pause(100)

basic.forever(() => {
    
})


```


## Objectives

* learn how to turn on LED lights on the LED screen
* learn how to turn off LED lights on the LED screen
* learn how to pause program execution for the specified number of milliseconds