6. case 04:Timer¶

6.1. Our Goal¶

Use our watch kit to create a wearable timer.

6.2. Material¶

1 x Watch kit

6.3. Hardware Connection¶

Assemble our watch kit directly just like the picture below.

../../_images/vOZpBF4.jpg

6.4. Software¶

Microsoft Makecode

6.5. Programming¶

Step 1¶

When start our program, create a variable flag and set its value to 0. When button A is pressed, delay time for 5 second. When button B is pressed, set the value of variable flag to 1.

../../_images/cP4zcvV.png

Step 2¶

Create a forever loop and place an if statement under it. When the variable flag equals to 1, then activate the function.
Set time delay and play the built-in music nyan for once. Then set the variable flag to 0.

../../_images/lcr6uOP.png

Program¶

Link of the whole program: https://makecode.microbit.org/_35iVK1WVe8ms
You can also download the program from the page below.

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6.6. Result¶

The watch can keep time precisely and play music.

6.7. Think¶

6.8. FAQ¶

6.9. Relative Readings¶