## Project 1: Heartbeat

![](./media/Makecode_56018947.jpg)

[Click to download the code for this lesson](./Code/Heartbeat.hex)

### (1)Project Description

(1) Project DescriptionThis project is easy to conduct with a micro:bit V2 main board, a Micro USB cable and a computer. The micro:bit LED dot matrix will display a relatively big heart-shaped pattern and then a smaller one. This alternative change of this pattern is like heart beating. This experiment serves as a starter for your entry to the programming world.

### (2)Components Needed:

Micro:bit main board V2 

Micro USB cable

### (3)Test Code:

Attach the Micro:bit main board V2 to your computer via the Micro USB cable and begin editing.

![](./media/Makecode_46b15e27.gif)

Complete Program :

![](./media/Makecode_d862ba0e.png)

Note: the "on start" means that the code in this block only executes once, while "forever" implies that the code runs cyclically.

### (4)Test Results:

After uploading the code, you will see a heartbeat effect appear on the Microbit board.

![](./media/Makecode_e64df1f5.gif)