# Water Level Sensor(EF05023)

## Introduction

It is able to detect the water level with the on-board visible parallel wires.

![](./images/05023_01.png)

## Products Link

[EELECFREAKS PlanetX Water Level Sensor](https://shop.elecfreaks.com/products/elecfreaks-planetx-water-level-sensor?_pos=1&_sid=8047733ba&_ss=r)

## Characteristic


 Designed in RJ11 connections, easy to plug.

## Specification


Item | Parameter 
:-: | :-: 
SKU|EF05023
Connection|RJ11
Type of Connection|Analog output
Working Voltage|3.3V

## Outlook



![](./images/05023_02.png)

## Quick to Start


### Materials Required and Diagram

 Connect the Water lever sensor to J1 port and the OLED to the IIC port in the Nezha expansion board as the picture shows.


![](./images/05023_03.png)

## MakeCode Programming


### Step 1

Click "Advanced" in the MakeCode drawer to see more choices.

![](./images/05001_04.png)

We need to add a package for programming, . Click "Extensions" in the bottom of the drawer and search with "PlanetX" in the dialogue box to download it. 

![](./images/05001_05.png)

***Note:*** If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu. 

### Step 2

### Code as below:

![](./images/05023_06.png)


### Link
Link: [https://makecode.microbit.org/_aAJboi9L1dc9](https://makecode.microbit.org/_aAJboi9L1dc9)

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:_aAJboi9L1dc9" frameborder="0" sandbox="allow-popups allow-forms allow-scripts allow-same-origin"></iframe></div>  


### Result
 The current value of the water level displays on the OLED screen. 

## Python Programming 


### Step 1

Download the package and unzip it: [PlanetX_MicroPython](https://github.com/lionyhw/PlanetX_MicroPython/archive/master.zip)

Go to  [Python editor](https://python.microbit.org/v/2.0)

![](./images/05001_07.png)

We need to add enum.py and waterlevel.py for programming. Click "Load/Save" and then click "Show Files (1)" to see more choices, click "Add file" to add enum.py and waterlevel.py from the unzipped package of PlanetX_MicroPython. 

![](./images/05001_08.png)
![](./images/05001_09.png)
![](./images/05023_10.png)

### Step 2
### Reference
```
from microbit import *
from enum import *
from waterlevel import *
waterlevel = WATERLEVEL(J1)
while True:
    display.scroll(int(waterlevel.get_waterlevel()))
```


### Result
 The current value of the water level displays on the micro:bit. 

## Relevant File


## Technique File