22. UV Sensor(EF05021)#

22.1. Introduction#

It is able to measure the total UV intensity of the sunlight.


22.3. Characteristic#

Designed in RJ11 connections, easy to plug.

22.4. Specification#

Item Parameter
SKU EF05021
Connection RJ11
Type of Connection Analog output
Working Voltage 3.3V

22.5. Outlook#


22.6. Quick to Start#

22.6.1. Materials Required and Diagram#

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


22.7. MakeCode Programming#

22.7.1. 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.

22.7.2. Step 2#

22.7.3. Code as below:#


22.7.5. Result#

The detected value from the UV sensor displays on the OLED screen.

22.8. Python Programming#

22.8.1. Step 1#

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor


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

../_images/05001_081.png ../_images/05001_091.png ../_images/05021_10.png

22.8.2. Step 2#

22.8.3. Reference#

from microbit import *
from enum import *
from uvlevel import *
uvlevel = UVLEVEL(J1)
while True:

22.8.4. Result#

The detected value from the UV sensor displays on the micro:bit.

22.9. Relevant File#

22.10. Technique File#