6. Soil Moisture Sensor(EF05005)#

6.1. Introduction#

Soil Moisture Sensor aims to detect the amount of the moisture in its surrounding soil.


6.3. Characteristic#

Designed in RJ11 connections, easy to plug.

6.4. Specification#

Item Parameter
SKU EF05005
Connection RJ11
Type of Connection Analog output
Working Voltage 3.3V

6.5. Outlook#


6.6. Quick to Start#

6.6.1. Materials Required and Diagram#

Connect the Soil moisture sensor to J1 port and the OLED module to IIC port in the Nezha expansion board as the picture shows.


6.7. MakeCode Programming#

6.7.1. Step 1#

Click “Advanced” in the MakeCode drawer to see more choices.


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.


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.

6.7.2. Step 2#

6.7.3. Code as below:#


6.7.5. Result#

The value of the current soil moisture display on the OLED module.

6.8. Python Programming#

6.8.1. Step 1#

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor


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

../_images/05001_081.png ../_images/05001_091.png ../_images/05005_10.png

6.8.2. Step 2#

6.8.3. Reference#

from microbit import *
from enum import *
from soilhumidity import *

while True:
    soilhumidity = SOILHUMIDITY(J1)
    soilhumidity_value = int(soilhumidity.get_soilhumidity())

6.8.4. Result#

The value of the current soil moisture display on the micro:bit.

6.9. Relevant File#

6.10. Technique File#