# Flashing Heart ## Introduction @unplugged Learn how to use the LEDs and make a flashing heart! (Want to learn how lights work? [Watch this video](https://youtu.be/qqBmvHD5bCw)).  ## Step 1 @fullscreen Place the ``||basic:show leds||`` block in the ``||basic:forever||`` block and draw a heart.  ## Step 2 @fullscreen Place another ``||basic:show leds||`` block. You can leave it blank and draw what you want. ```blocks basic.forever(function() { basic.showLeds(` . # . # . # # # # # # # # # # . # # # . . . # . .`); basic.showLeds(` . . . . . . . . . . . . . . . . . . . . . . . . .`); }) ``` ## Step 3 @fullscreen Look at the virtual @boardname@, you should see the heart and your drawing blink on the screen.  ## Step 4 @fullscreen If you have a @boardname@ connected, click ``|Download|`` to transfer your code and watch the hearts flash!