Smiley Buttons

Code a micro:bit emoji!

Program the buttons on the micro:bit to show a happy 😀 or sad face 🙁

Step 1

Let's show a happy face when we press button A.
Click on the ||basic:Basic|| category in the Toolbox. Drag a ||basic:show icon|| block into the ||input:on button A pressed|| block.
In the ||basic:show icon|| block, click on the Heart icon to open the menu. Select a Happy Face icon.

input.onButtonPressed(Button.A, function() { 
    basic.showIcon(IconNames.Happy)
})

Step 2

In the micro:bit simulator on the screen, press the A button. Do you see a happy face? ⭐ Great job! ⭐

Step 3

Now let's show a sad face when we press button B.
Click on the ||input:Input|| category in the Toolbox. Drag another ||input:on button A pressed|| block onto the coding workspace (you can place this anywhere). Click on the A button drop-down menu, and select B.

input.onButtonPressed(Button.B, function() {})

Step 4

From the ||basic:Basic|| category, drag another ||basic:show icon|| block into the ||input:on button B pressed|| block. In this ||basic:show icon|| block, click on the Heart icon to open the menu. Select a Sad Face icon.

input.onButtonPressed(Button.B, function() {
    basic.showIcon(IconNames.Sad)
})

Step 5

In the micro:bit simulator on the screen, press the B button. Do you see a sad face? ⭐ Great job! ⭐

Step 6

If you have a micro:bit device, connect it to your computer and click the |Download| button. Follow the instructions to transfer your code onto the micro:bit. Try pressing the A and B buttons on the micro:bit to see your happy 😀 and sad 🙁 emojis!

Step 7

Go further - try adding a secret emoji that appears when A and B buttons are pressed together! Learn more about how the micro:bit buttons work by watching this video.

input.onButtonPressed(Button.A, function() {})