# Case 04: Counter

## Purpose

 Use the Smart Coding Kit to create a wearable counter. 

## Products Link

 1 x [ELECFREAKS micro:bit Smart Coding Watch Kit](https://shop.elecfreaks.com/products/elecfreaks-micro-bit-smart-coding-watch-kit-without-micro-bit-board?_pos=2&_sid=ce4e7cb69&_ss=r)



![](./images/smart_coding_kit_case_04_01.png)



## Software


[MakeCodemakecode](https://makecode.microbit.org/#)

## Programming



 Programme to show icon while on start and set the variable `i` as 0; Set i=i+1 while button A being pressed, Set i=i-1 while button B being pressed. Drag the show digital block to the Forever block and choose to display `i` of the value of the variable. 


![](./images/smart_coding_kit_case_04_02.png)



### Link
 Link：[https://makecode.microbit.org/_foxcuohURfzb](https://makecode.microbit.org/_foxcuohURfzb)

 You may also download it directly below:

<div style="position:relative;height:0;padding-bottom:70%;overflow:hidden;"><iframe style="position:absolute;top:0;left:0;width:100%;height:100%;" src="https://makecode.microbit.org/#pub:_foxcuohURfzb" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  


## Result


 Start counting and displaying the results through button A or B. 

## Exploration



## FAQ



## Relevant File