What is water level alarming

Water level alarming operation

Practical operation

Preparing a tank and paste devices as below piture:

Hardware connect



Edge Connector Data Sheet


Step 1

Go to MakeCode page, click Advanced in the code block and click on Extensions.

We need to add a new codebase for programming of smart home. Finding “Add Package” in the bottom of code block and click it. Then a message box will show up, search “smart home”, and download this new codebase.

Note:If there is a hint says some codebase will be deleted because of incompatibility. Don’t worry. You could go ahead as the hint or build a new item in item menu bar.

Step 2

Snap if statement into forever,set analog read pin P2 > 500, that’s say when P2 > 500, the water level is higher than security line.

Step 3

Set start melody “ba ding” repeating once as alarming voice, set digital write pin P1 to 1 as driving the pumping.

Step 4

Else,set digital write pin P1 to 0 as turning off the pump.


Make code:https://makecode.microbit.org/_1XpJDo2Y0aDL

You also could directly download program visit website as below:


When the water level over security line,micro:bit will control lift pump to pumping.


Stop pumping:


How to use micro:bit control water level in fish tank ?


More information