## Project 9: Speaker

![](./media/Makecode_a4828463.jpg)

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

### (1)Project Description:

The Micro: Bit main board V2 has an built- in speaker, which makes adding sound to the programs easier. We can program the speaker to air all kinds of tones, like playing the son *Ode to Joy.*

### (2)Components Needed:

Micro:bit main board V2 

Micro USB cable

### (3)Test Code :

Link computer with micro:bit board by micro USB cable, and program in MakeCode editor, 

![](./media/Makecode_6f271fce.gif)

Complete Program :

![](./media/Makecode_8f4c2e63.png)

### (4)Test Results:

After uploading the test code to micro:bit main board V2 and powering the board via the USB cable, the speaker utters sound and the LED dot matrix shows the logo of music.

![](./media/Makecode_73f47c8f.gif)